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Catalogue 2010/2011

Surge Protection

BITZDUCTOR XTU ML4 (2) BD 0-180

New combined lightning current and surge arrester

with actiVsense technology

Automatically detects the operating voltage of the

wanted signal

Optimally adjusts the voltage protection level to the

signal voltage currently applied

DEHNguard M ... CI 275 (FM)

No additional backup fuse required due to arrester

backup fuse integrated in the protection module

Prewired,modular surge arrester for 230/400 V

systems consisting of a base part and plug-in

protection modules

BXT ML4 BE C 12

BXT combined lightning current and surge arrester

module with LifeCheck for protecting 2 pairs

Specifically coordinated with applications with diode

circuit at the input,current loops (TTY) and opto-

coupler inputs

DRC LC M3+ Test Device

For fast testing of LifeCheck-equipped SPDs

Handheld device, easy transport and operation

With database function for the documentation

of results

BXT ML2 B 180

TYPE 1 lightning current arrester module,

with LifeCheck monitoring system

Two-pole device with direct shield earthing

Suitable for almost all applications

BXT ML2 BD HF EX 6

BXT surge arrester module with LifeCheck for use in

hazardous areas

For protecting one pair of intrinsically safe circuits

and RS485 bus systems

Self-capacitance and self-inductance negligibly small

DEHNguard S CI 275 (FM)

No additional backup fuse required due to arrester

backup fuse integrated in the protection module

Universal surge arrester consisting of a base part

and a plug-in protection module with integrated

backup fuse

DEHNguard M YPV SCI ... FM

Prewired,modular surge arrester for use in photovol-

taic systems consisting of a base part and plug-in

protection modules

Combined disconnection and short-circuiting device

with safe electrical isolation in the protection module

prevents fire damage due to d.c.arcs

See page 69

See page 75

See page 104

See page 179

See page 195

See page 362

See page 316

See page 191

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DEHNguard M ... 150/320/385/440 (FM)

Prewired,modular surge arrester consisting of a base

part and plug-in protection modules

New models with a max. continuous operating voltage

of 150 V,320 V,385 V and 440 V

BITZDUCTOR VT ALD 36

Energy coordinated combined lightning current and

surge arrester

For protecting earth-free d.c.supply systems up to

nominal currents of 4 A

Low voltage protection level,suitable for sensitive

terminal equipment

DPRO 230 LAN100

Dual surge protection for power supply systems and

LAN interfaces

Gigabit Ethernet protection (1000 Base-T) with an

elegant design

DEHNguard S VA (FM)

Universal surge arrester consisting of a base part and

a plug-in protection module

Leakage-current-free series connection of a varistor

and a spark gap in the plug-in protection module

DK 25 Feed-Through Terminal

For changing the wiring level

Supports lightning-impulse-current-conform

installation of SPD combinations

NET PRO 10X TC1 RST

Compact and cost-effective protective board with 10

RJ45 ports for the protection of telecommunications

systems

Input equipped with cage spring terminals which can

be removed as a block for easy line measuring

Integrated protection against power crossing

IGA 10 V2 IP54

Enclosure for the installation of surge arresters,

tested with lightning impulse currents

Degree of protection of IP54

Sealable

EG NET PRO 10X 19

19 (482.6 mm) stainless steel enclosure for installati-

on into distribution cabinets

For up to 5 NET PRO 10X TC1 RST protective boards

Compact in design, protection of up to 50 ports over

a vertical module

EG NET PRO 10X 3HE

Stainless steel enclosure,3 vertical modules for instal-

lation in 19 (482.6 mm) distribution cabinets

For NET PRO 10X TC1 RST protective boards

Ideally suited for small-sized distribution boards

DEHNgate DGA LG 7 16 X

Coaxial surge arrester for HF technology

For multi-frequency applications with d.c. supply system

Optionally available with self-extinguishing gas dischar-

ge capsule up to nominal currents of 2.5 A

Maximum transmission and PIM performance

Pipe Clamp for Use in hazardous Areasfor Diameters from 26.9 mm to 500 mm

For installation in potentially explosive atmospheres

(hazardous zones 1 and 2 as well as 21 and 22)

Tested according to explosion group IIB

Considerably reduced installation time

DEHNpipe DPI CD HF EXD 5 M

Flameproof surge arrester for use in hazardous areas

For protecting measuring circuits and bus systems

Easy installation on field devices with a spare cable

gland

BXT ML2 BD DL S 15

BXT combined lightning current and surge arrester

module with LifeCheck monitoring system

Specifically coordinated with the requirements for

Dupline buses

Terminals for direct and indirect shield earthing

DEHNbloc Maxi NH00 255

Coordinated, spark-gap-based lightning current arres-

ter with a discharge capacity up to 25 kA (10/350 s)

No tripping of 32 A gL/gG fuses up to short-circuit

currents of 50 kArms

DEHNbloc M 1 320 (FM)

Coordinated,spark-gap-based lightning current arres-

ter with a max. continuous operating voltage of 320 V

and a discharge capacity up to 25 kA (10/350 s)

No tripping of 32 A gL/gG fuses up to short-circuit

currents of 50 kArms

See page 49

See page 112

See page 252

See page 252

See page 46 (47)

See page 198

See page 252

See page 351

See page 76

See page 146

See page 276

See page 145

See page 223

See page 309

DEHNpipe DPI CD EXD 230 24 M (N)

Dual surge protection for 230 V power supply systems

and data interfaces

Easy installation on field devices with a spare cable

gland

Approved for hazardous areas due to flameproof

enclosure

See page 341

See page 310

NwPos

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100th Anniversary of DEHN. 2

DEHN Worldwide. 8

DEHN Safety according to Specification. 10

Surge protection forPower Supply Systems 15

SPDs for low-voltage installations and equipment

Contents 17

General information 367

Index 372

Surge protection forInformation Technology Systems 153

SPDs for IT installations and equipment

Contents 155

Surge protection forPower Supply and Information Technology Systems 337Combined adapters

Lightning Equipotential Bonding 343Isolating spark gaps and components

Measuring and Test Devices 359

Contents

Valid from 1st April 2010This catalogue replaces the Surge Protection Main Catalogue published in 2008. We reserve the right to introduce changesin performance,dimensions and material in the course of technical progress.The figures shown are without obligation.Misprints,errors and alterations excepted.Reproduction in any form whatsoever is forbidden without our authorisation. Publication No.DS570/E/2010

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100th Anniversary of DEHN....from a workshop to anindustrial enterpriseIn our great-grandparents timeelectricity was by no means amatter of course. In the early20th century sufficient illumina-tion used to be a luxury and aprivilege of the upper class.

Electricity was at best availablein large cities but rarely in ruralareas. The first long-distancetransmission of alternating cur-rent took place in 1891.At that time Oskar von Millersucceeded in transporting elec-trical energy for the first timeover a distance of 176 kilome-tres from Lauffen / Neckar toFrankfurt / Main via a high-

voltage power line (20 kV).This marked the breakthroughof the transmission of alternat-ing current and was a signifi-cant step forward. But it wasstill a long way to go beforethe total population was effi-ciently and reliably suppliedwith electricity. It was only inthe early 1920s that electricitywas made accessible to manysmall towns for the first time.

During this eventful time, HansDehn founded his electricalinstallation company in Nurem-berg on 21st January 1910.

Now, many years later, and yetwithin a comparatively shortperiod of time, which was char-acterised like no other by thechangeful history of Germanyand its people, success and set-

back, war, reconstruction andeconomic crisis, DEHN celebrat-ed its 100th anniversary on21st January 2010.

Starting as a small electricalinstallation company, DEHNbecame a globally operatingfamily-owned company.

The following pages showsome milestones in the com-panys history of 100 years.

On 21st January 1910 the electrician Hans Dehnlaid the foundation for todays company whenregistering an electrical installation business inNuremberg.

Since electric current had to be transported to theconsumer, building installation and particularlythe construction of overhead lines were the mainfields of activity for DEHN electricians under themanagement of Hans Dehn.

1910

After the first successful business years, a sub-sidiary is opened in Neumarkt i.d.Opf. locatedabout 45 km southeast of Nuremberg toadvance electrification in Upper Palatinate.

1921

Apart from overhead lineconstruction and building

installation, the installation of lightning protec-tion systems on buildings is an integral part ofour business activities. Hans Dehn also starts todevelop and manufacture lightning protection

and earthing components.

1923

The company grows year after year and HansDehns sons Walter and Willy become partners.From now on, the family-owned company oper-ates under the name of DEHN + SHNE. In1941 the youngest son Richard becomes apartner.

1933

Hans Dehn quite early deals with lightning pro-tection. His first patent in this field is grantedin 1918.

1918

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The Second World War inevitably slows downbusiness development. The premises in Nurem-

berg and Neumarkt are considerably damagedduring the war. Highly motivated, the familystarts reconstruction.The starting point for post-war activities inNeumarkt was a warehouse built in the lastmonths of the war near Hans-Dehn-Straewhere our head office is located today.

1939 1945

The decision to builda hot dip galvanisingplant in Neumarkt

paves the way forthe extension of thesubsidiary to a pro-duction site.

1948

In the post-war period, businessbegins to pick up again:DEHN + SHNE presents light-ning protection and earthingproducts at the Hanover tradefair for the first time. Theincreasing market demand

requires a further extension ofthe production facilities inNeumarkt.

1952

DEHN seizes the opportunity to market itsproducts abroad: Austria becomes the firstexporting country.

1953

Due to our technical expertknowledge and entrepreneurialvision, we are the worlds first

manufacturer to realise thatexternal lightning protectionhas to be combined with inter-nal lightning protection.The first generation of surgeprotective devices is launched.

1954

The third product field besideslightning and surge protection -safety equipment - is launched.

The ball pin patented for DEHN+ SHNE in 1953 significantlyinfluences the state of the art.

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The pioneering innovation of the separableearth rod considerably complements the rangeof earthing components and is still in greatdemand today.DEHN + SHNE becomes well-known in thefield of earthing technology.

1958

The product range is continuously complement-ed, especially in the field of surge protection.New protective devices such as VA 280 andBLITZDUCTOR are presented on the market.

1970 1980

The first lightning current carrying surgearrester enters the market: VGA 280/4, alsoknown as DEHNventil. It globally becomes asynonym for a new generation of surgearresters. DEHN + SHNE captures a leadingposition in the sector of surge protection.

1984

Foundation of DESITEK A/S in Denmark. It isthe first of todays 10 sales companies in for-eign countries.

1988

The success story of surge protection startswith VM 280, the worlds first arrester with amodular width of 17.5 mm.

1986

The KS connector is devel-oped to reliably connectcircular conductors to flatprofiles.

1956

The universal MV clamp from our lightningprotection portfolio is launched.

In Switzerland DEHN + SHNE participates in theELVATEC AG, which has been distributing DEHNproducts on the Swiss market for several years.

1990

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Development and implementation of the masterplan DEHN 2000.A milestone in the companys history:DEHN+SHNE prepares for the future.National and international success requires com-prehensive restructuring, reorganisation andreorientation.

1991

The new energy-coordinated Red/Line arrester family for low-voltage consumersinstallations is launched.Surge protective devices such as DEHNport and DEHNguard start their story ofsuccess.Red/Line becomes the general term for all protective devices for use in powersupply systems.

1993

The new energy-coordinated Yellow/Linearrester family for the protection of data tech-nology and automation systems, including thekey product BLITZDUCTOR CT, is another mile-stone of our research and development.

1996

The positive development in Spain requires newdistribution channels. DEHN IBERICA S.A. is found-ed in co-operation with our long-standing partner.

1992

In this year DEHN + SHNE is ready to makethe leap to America. DEHN Inc. is founded.

DEHN POLSKA Sp. z o.o. is founded in Warsawto serve the Polish market more efficiently.

1999

Foundation of DEHN & FILS in Strasbourg, laterrenamed in DEHN FRANCE S.a.r.l.

1998

To intensify our activities in England DEHN (UK)Ltd. is founded near Manchester.

1994

In co-operation with our long-time partner on the Italianmarket DEHN ITALIA S.p.A. is founded in Bozen.

After almost 50 years on the Austrian market, asubsidiary is founded, DEHN AUSTRIA GmbH.

2000

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Safe and functional arresters with a unique design. The new Red/Line andYellow/Line product families are presented on international trade fairs in Hanoverand Frankfurt.

2006

In 2006 DEHN + SHNE was the first companyto obtain VdS certification for surge protective

devices.

DEHN Surge Protection(Shanghai) Co.Ltd is founded inShanghai to service the Chinesemarket, which has been workedby an agent since 1992.

2005

50 years of surge protection byDEHN + SHNE.In 1954 only few believed in thesuccess of surge protection.Today surge protective devicesare an essential part of electricalinstallations.

2004

The HVI conductor is a milestone in externallightning protection.The separation distance can be easily main-tained even in case of challenging architecturaldesign by using the new, high-voltage-resistantdown conductor.

2003

Completion of the new administration buildingon Hans-Dehn-Strae.

The successful DEHNventil has a strong succes-sor: The new DEHNventil.It is a perfect all-in-one solution with completedevices for all system configurations(TN-C, TN-S, TT).

2002

Moreover, the master plan is continued:Move into new production facilities for surgeprotective devices.

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On 21st January 2010 DEHN + SHNE celebrates its 100th anniversary a timefor joy, pride and review.During our history of 100 years, showing and pioneering new ways in the field oflightning protection has always been a major concern.

We provide protection against lightning, surges and possible hazards of electricity a triumvirate of safety.

Lightning protection

Surge protectionSafety equipment

DEHN your safety is our concern.

www.dehn.de

2010

Evolution of safety DEHNguardSCI is a surge protective devicefor PV systems which combineseffective surge protection withthe protection of persons andfire protection.

2009

The new space-saving DEHNrecord MCM XTcondition monitoring system acts like an earlywarning system generating a fault messageeven in the event of imminent arrester over-load.Thus faults can be identified in advance andprecise status messages support maintenancestaff in diagnosing these faults.

2008

Completion of a new three-storey productionfacility. It stands for a further big step forwardin the scope of the master plan and providesthe company with more space for production.

2007

BLITZDUCTOR XTU is the firstarrester to automatically adjust itsnominal voltage. It does not havea specified nominal voltage andcan thus be used for any voltagein the range from 0 to 180 V d.c.thanks to actiVsense technology.

DEHN + SHNEproves for the firsttime absence ofignition sparkswhen lightningcurrent flowsthrough a pipeclamp.The newly

developed pipe clamp for hazardous areas canbe installed in potentially explosive areas withlittle effort.

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DEHN Worldwide.

AlgeriaArgentinaAustraliaAustriaBelgiumBelizeBoliviaBrazilBulgariaCanadaCap VerdeChileChinaColumbiaCosta RicaCroatiaCubaCzech RepublicDenmarkEl SalvadorEstoniaF.Y.R.O.MFinland

FranceGreat BritainGreeceGuatemalaHondurasHungaryIcelandIndiaIranIrelandIsraelItalyJapanLatviaLebanonLithuaniaLuxembourgMalaysiaMauritiusMexico

NetherlandsNew ZealandNicaraguaNigeriaNorwayOmanPakistanPanamaPeruPolandPortugalRomaniaRussiaSaudi ArabiaSerbiaSingaporeSlovakiaSloveniaSouth AfricaSpainSri LankaSwedenSwitzerland

SyriaTaiwanThailandTurkeyUgandaUnited Arab EmiratesUSAVenezuela

We shall be pleased to name youthe right contact person of oursubsidiaries or representatives.

Please contact our ExportDepartment under

Tel. +49 9181 906 462Fax +49 9181 906 444

or send an e-mail [email protected]

8

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Failures of technical systems and installations are very unpleasantfor the operators. These require faultless operation from theequipment both under normal conditions and in case of thun-derstorms. Loss reports of insurance companies show clearly that

there is a backlog demand both in the private (Fig. 1) and com-mercial sector (Fig. 2). A comprehensive protection conceptwould help to achieve this aim.The Lightning Protection Zones Concept enables designers, con-structors and operators to plan, perform and control protectionmeasures.All relevant devices, installations and systems are thusreliably protected and furthermore with economically acceptableefforts.

Sources of interferenceSurges arising due to thunderstorms are caused by direct or closelightning strokes or distant lightning strokes (Fig. 3).Direct or close lightning strokes are strokes into the lightning pro-tection system of a structure, into its immediate surroundings orinto the conductive systems entering the structure (e.g. low-volta-ge power supply, telecommunications lines and control lines...).

Due to their amplitudes and energy loads, the arising impulse cur-rents and impulse voltages as well as the corresponding electro-magnetic field (LEMP) represent a special risk for the system tobe protected.

In case of a close or direct lightning strike, the surges (Fig. 3:Case 1a) are caused by a voltage drop at the impulse earthingresistance and the resulting potential rise of the structure towardsthe distant surroundings. This is the maximum load on electricalinstallations in structures.

The characteristic parameters of flowing impulse currents (peakvalue, rate of current rise, load, specific energy) can be describedwith the impulse-current wave form 10/350 s (Fig. 4) and aredefined in international, European and national standards as testcurrents for components and devices for protection against directlightning strokes.

In addition to the voltage drop at the impulse earthing resistance,surges arise in the electrical building installation and the systems

connected to it and equipment due to the induction effect of theelectromagnetic lightning field (Fig 3: Case 1b).The power of these induced surges and the resulting impulse cur-rents is considerably lower than the power of a direct lightningimpulse current and is therefore only described with the impulsecurrent wave 8/20 s (Fig. 4). Components and equipment, whichdo not have to conduct currents from direct lightning strokes, aretherefore tested with impulse currents of 8/20 s.

Protection philosophyDistant strokes are lightning strokes from a distance to the objectto be protected, lightning strokes into the medium voltage over-head line network or into its immediate surroundings or lightningdischarges from cloud to cloud (Fig. 3: Cases 2a, 2b and 2c).

In analogy to induced surges, the effects of distant lightning stro-kes on the electrical system of a structure are controlled by devi-ces and components, which are designed accordingly for impulsecurrent wave 8/20 s.Surges due to switching operations (SEMP) are caused by e.g.

switching off inductive loads(e.g. transformers, coils, motors),

ignition and interruption of electric arcs(e.g. arc welding device),

tripping of fuses.

The effects of switching operations in electrical installations ofstructures can also be simulated with impulse currents of waveform 8/20 s for testing purposes.

DEHN Safety according to Specification.

Lightning Protection Zones Concept

Fig. 1: Causes of damage to electronic equipment,Analysis of 7370 damage claims(Ref.:Wrttemberigsche Versicherung AG)

Fig. 2: Average damage causes during the last years(Ref.: Gesamtverband der Deutschen Versicherungswirtschaft e.V.)

Water5.6 %

Fire4.6 %

TheftVandalism

27.1 %

23.7 %Surges

(lightning dischargesswitching operations)

15.3 %Others

0.8 %Elemental

22.9 %Negligence

Others41 %

14 %Unknown 45 %

Lightning/Surges

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To ensure continuous availability of complex power sup-ply and IT systems even in case of a direct lightningeffect, further measures for surge protection of electricaland electronic installations are necessary based on abuilding lightning protection system. Taking all causes ofsurges into consideration is very important. For this pur-pose, the Lightning Protection Zones Concept of IEC62305-4 is applied (Fig. 5).A structure is subdivided in different risk zones. These

zones help to define the necessary devices and compo-nents for lightning and surge protection.Part of an EMC-conform lightning protection zones con-cept is an external lightning protection system (includingair-termination system, down-conductor system, earth-ing), equipotential bonding, spatial shielding and surgeprotection for the power supply systems and IT systems.The lightning protection zones have to be definedaccording to Table 1.

In correspondence with the requirements and loads on

surge protective devices with respect to their installationsites, these are classified as lightning current arresters,surge arresters and combined lightning current andsurge arresters.The highest requirements for the discharge capacity aremade on lightning current and combined lightning cur-rent and surge arresters used for the transition fromLightning Protection Zone 0A to 1 or 0A to 2.

These SPDs must be able to conduct partial lightningcurrents (wave form 10/350 s) several times withoutdestruction in order to prevent the penetration of

destructive partial lightning currents into the electricalinstallation of a building.At the boundary from LPZ 0B to 1 or downstream of thelightning current arrester at the boundary from LPZ 1 to2 and higher, surge arresters are used for protectionagainst surges. Their function is to further reduce boththe residual loads of the upstream protection levels andlimit the induced or own surges.

The aforementioned lightning and surge protectivemeasures at the boundaries of the lightning protection

zones apply to both power supply systems and IT sys-tems to the same extent.All measures described in the EMC-conform LightningProtection Zones Concept help to achieve a permanentsystem availability of a modern infrastructure.

low voltage powersupply system

20 kVL1L2L3

PEN2c

1 2a

2b

1b

1a

Rst

1a

Direct/Close lightning strike:

Lightning strike into the external lightningprotection system, process framework(in industrial installations), cables etc.

Voltage drop at the impulse earthingresistance RstInduced voltage in loops

1

1b

IT system

Distant lightning strike

Strike into medium volta-ge overhead lines

Surge travelling waves onoverhead lines due tocloud-to-cloud lightning

Fields of the lightningchannel

2a

2b

2c

Fig. 3: Causes of surges in case of lightning discharges

100 kA

80 kA

60 kA

50 kA

40 kA

20 kA

200 s 350 s 600 s 800 s 1000 s

2

1

Wave form [s] 10/350 8/20

imax [kA] 100 5

Q [As] 50 0.1

W/R [J/] 2.5 106 0.4 103

Standard IEC 62305-1 EN 61000-4-5

t (s)

(kA)

i

21

Fig. 4: Test impulse current for Test impulse current forlightning current arresters surge arresters21

ventilation

down-conductor

system

spatial shield

terminal device

steel reinforcement

IT system

foundation earth electrode

air-termination system

l.v. powersupply system

Lightning equipotential bondingLightning current arrester (SPD Type 1)

Local equipotential bondingSurge arrester (SPD Type 2, SPD Type 3)

Lightning equipotential bondingLightning current arrester

Local equipotential bondingSurge arrester

Lightning electro-magnetic pulse

Switching electro-magnetic pulse

Lightningprotection zone

Fig. 5: EMC-based lightning protection zones concept

Table 1: Definition of lightning protection zones (LPZ)

LEMP protection of structures with electrical and electronic systemsaccording to IEC 62305-4

Lightning Protection Zone Description

LPZ 0A Threat by direct lightning strokes, impulse currents up to complete lightningcurrents and the entire lightning field.

LPZ 0B Protected against direct lightning strokes. Threat by impulse currents up topartial lightning currents and the entire lightning field.

LPZ 1 Impulse currents are further limited by current distribution and SPDs situatedat the zone boundaries. The lightning field is mostly attenuated by spatialshielding.

LPZ 2 Impulse currents are further limited by current distribution and SPDs situatedat the zone boundaries. The lightning field is mostly attenuated by spatialshielding.

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DEHN Technical Definitions.

Surge Protective Devices (SPD)

Surge protective devices are items of equipmentwhose basic components are voltage-controlledresistors (varistors, suppressor diodes) and/orspark gaps (discharge paths). The function ofsurge protective devices is to protect other elec-trical equipment and installations against imper-missibly high surges and/or to establish theequipotential bonding.Surge protective devices are classified

a) according to their application in

Surge protective devices for power sup-ply systems and equipmentfor nominal voltage ranges up to 1000 V

according to EN 61643-1:2001 as SPD Types1/2/3

according to IEC 61643-1:1998-02 as SPDsClass I / II / III

Surge protective devices for IT systemsand equipmentfor protection of modern electronic systems intelecommunications and signal-processing net-works with nominal voltages up to 1000 V a.c.(root-mean-square value (rms)) and 1500 Vd.c. against indirect and direct effects of light-ning strokes and other transients.

according to IEC 61643-21:2000 + Corrigen-dum:2001, EN 61643-21:2001 and DIN VDE0845 Part 3-1.

Isolating spark gaps for earth-termina-tion systems or for equipotential bond-ing

b) according to their impulse current dis-charge capacity and their protective effectin

Lightning current arresters /

Coordinated lightning current arrestersfor interference due to direct or close light-ning strokes for protection of installationsand equipment (for use at the boundaries ofLightning Protection Zones (LPZ) 0A and 1).

Surge arrestersfor distant lightning strokes, switching over-voltages as well as electrostatic dischargesfor protection of installations, equipment andterminal devices (for use at the boundariesdownstream of LPZ 0B).

Combined lightning current and surgearrestersfor interference due to direct or close light-ning strokes for protection of installations,equipment and terminal devices (for use atthe boundaries between LPZ 0A and 1 as wellas 0A and 2).

Technical data of surge protective devices

The technical data of surge protective devicescomprise information defining the applicationconditions upon

application(e.g. installation, mains conditions,temperature)

performance in case of interference(e.g. impulse current discharge capacity,follow current extinguishing capability,voltage protection level, response time)

performance during operation(e.g. nominal current, attenuation,insulation resistance)

performance in case of failure(e.g. backup fuse, disconnection device,fail-safe)

Categories according to IEC 61643-21: 2001(DIN VDE 0845 Part 3-1)

For testing the current carrying capability andvoltage limitation under influences of impulses,a variety of impulse voltages and impulse cur-rents is described in IEC 61643-21:2001 (DINVDE 0845 Part 3-1). They are sorted in Table 3

and provide preferred values. In table 2 of IEC61643-22 (DIN VDE 0845-3-2) the source oftransients is assigned to the different impulsecategories according to the coupling mechanism.Category C2 includes inductive couplings(surges), category D1 galvanic couplings (light-ning currents). The relevant category is specifiedin the technical data.

Cut-off frequency fG

defines the frequency-dependent performanceof an SPD. Cut-off frequencies are frequencies

causing an insertion loss (aE) of 3 dB under cer-tain test conditions (see EN 61643-21:2001).If no other value is indi-cated, the frequencyvalue refers to a 50 system.

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DEHN + SHNE surge protective devicesexceed the values indicated in the categories.The explicit value for the impulse current carry-ing capability is therefore indicated by the

stated nominal discharge current (8/20 s) andlightning impulse current (10/350 s).

Combined impulse UOC

is generated by a hybrid generator (1.2/50 s,8/20 s) with a virtual impedance of 2 .Theopen-circuit voltage of this generator is de-fined as UOC. UOC is especially indicated forSPDs Type 3.

Degree of protection

The degree of protection (IP) corresponds tothe subdivision into degrees of protection inaccordance with DIN EN 60529 (VDE 0470Part 1).

Disconnecting time ta

is the time passing until the automatic discon-nection from power supply of the electricalcircuit or equipment to be protected in case ofa failure. The disconnecting time is an applica-tion-specific value resulting from the intensityof the fault current flowing and the character-

istics of the protective device.

Disconnection capacity / Follow currentextinguishing capability Ifi

The disconnection capacity is the uninterfered(prospective) rms value of the mains followcurrent, which can automatically be extin-guished by the surge protective device at pres-ence of UC. It can be proven in the scope of anoperating duty test according to EN 61643-11.

Frequency range

characterises the transmission band or let-through frequency of an SPD according tothe described attenuation characteristics.

Insertion loss

With an indicated frequency, the insertion lossof a surge protective device is defined by therelation of the voltage value at the installationsite before and after installing the SPD.If no other value is indicated, the value refersto a 50 system.

LifeCheck

Repeated discharges with values beyond thespecifications of the device may overload SPDsused in IT systems. In order to ensure a high

system availability, SPDs should therefore besubject to systematic tests. LifeCheck allowsfor quick and easy SPD testing (refer also topage 177).

Lightning impulse current Iimp

is a standardised impulse current curve, with awave form of 10/350 s. Its parameters (peakvalue, charge, specific power) simulate theloads of natural lightning currents.Lightning current and combined lightningcurrent and surge arresters must be capable ofdischarging such lightning impulse currentsseveral times without consequential destruc-tion of the equipment.

Mains-side overcurrent protection /Backup fuse

is an overcurrent protective device (e.g. fuse orcircuit breaker), which is installed outside ofthe surge arrester on the supply side to inter-rupt the power-frequency follow currents, ifthe breaking capacity of the surge protectivedevice is exceeded.

Max. continuous operating voltage UC

is the root mean square (rms) value of themaximum voltage, which may be applied tothe correspondingly marked terminals of thesurge protective device during operation. It isthe maximum voltage on the SPD in thedefined non-conductive state, which ensuresthat this state is regained after response anddischarge.The value of UC shall be chosen in accordancewith the nominal voltage of the system to beprotected and the requirements of the installa-tion provisions (IEC 60364-5-534).

Max. discharge current Imax

is the maximum peak value of the impulse cur-rent (8/20 s), which can be safely dischargedby the device.

Max. transmission capacity

defines the maximum RF capacity which canbe transmitted via a coaxial surge protectivedevice without interfering with the protectivecomponent.

Nominal discharge current In

is the peak value of an impulse current (waveform 8/20 s), which the surge protectivedevice is rated for according to a certain testprogramme.

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Nominal load current (nominal current) IL

is the highest permissible operating current,which may be permanently conducted via thecorrespondingly marked terminals.

Nominal voltage UN

corresponds to the nominal voltage of the sys-tem to be protected.The nominal voltage isoften indicated for surge protective devices usedin IT installations for type designation purposes.For a.c. voltages it is indicated as rms value.

N-PE surge arresters

are surge protective devices exclusively designedfor installation between the N and PE conductor.

Operating temperature range TU

indicates the range in which the devices can beused. For devices without self-heating, it is equalto the ambient temperature range. The tempera-ture rise of devices with self-heating must notexceed the maximum value indicated.

Protective circuit

Protective circuits are multi-stage, cascaded pro-tective devices. The individual protection stagescan consist of discharge paths, varistors, semi-conductor elements. The energy coordination ofthe individual protection stages is performedwith decoupling elements.

Protective conductor current IPE

is the current flowing through the PE connectionwhen the surge protective device is connected tothe maximum continuous operating voltage UC,corresponding to the installation instructionsand without load-side consumers.

Response time tA

Response times generally characterise theresponse performance of the individual protec-tion elements used in surge protective devices(refer also to page 371).Depending on the steepness du/dt of the im-pulse voltage or di/dt of the impulse current, theresponse times can change within certain limits.

Return loss

indicates for high-frequency applications, howmany rates of the forward wave are reflectedat the protective device (transition point).It is a direct measure for rating the adjustment

of the protective device to the surge impedanceof the system.

Series impedance

is the impedance in the direction of the signalflow between input and output of the SPD.

Shield attenuation

Relation of the power fed into a coaxial cable tothe power radiated through the cable from thephase conductor.

Short-circuit withstand capability

is the value of the prospective power-frequencyshort-circuit current controlled by the surge pro-tective device if it is supplied with an upstreambackup fuse.

SPD class (Yellow/ Line)

All DEHN surge arresters for use in IT systemsare assigned a Yellow/Line SPD Class and aremarked correspondingly with a symbol in thetechnical data sheet and on the rating plate

(refer also to page 151).

Thermal disconnector

Surge protective devices for use in power supplysystems, which are supplied with voltage-con-trolled resistors (varistors), mostly have an inte-grated disconnection device, which isolates thesurge protective device from mains in case ofoverloads and indicates this operating state.The disconnector reacts to the joule heatgenerated by an overloaded varistor and discon-nects the surge protective device from mains, ifa certain temperature is exceeded.The disconnection device is designed to discon-nect the overloaded surge protective device intime to avoid a fire hazard. It is not designed toensure the protective measure of protectionagainst indirect contact.The function of these thermal disconnectors canbe tested by simulated overloads/ageing of theSPD.

Voltage protection level UpThe voltage protection level of a surge protectivedevice is the maximum instantaneous value of

the voltage on the terminals of a surge protec-tive device, determined from the standardisedindividual tests for

Lightning impulse sparkover voltage1.2/50 s (100%)

Response voltage for a steepness of 1 kV/s

Residual voltage for nominal dischargecurrent Ures

The voltage protection level characterises thecapability of a surge protective device to limitsurges to a residual level. If used in power sup-ply systems, the voltage protection level defines

the location of use by the overvoltage categoryaccording to DIN VDE 0110-1:2003-11 (DIN EN60664-1, IEC 60664-1). For surge protectivedevices designed for protection of IT systems,the voltage protection level has to be adaptedto the immunity of the equipment to be protect-ed (IEC 61000-4-5: 2001-12).

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Surge protection for

POWER SUPPLY SYSTEMSSPDs for low-voltage installations and equipment

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Easy choice 18

Combined SPDs Type 1 31

Lightning Current Arresters Type 1 45

N-PE Lightning Current Arresters Type 1 63

Surge Arresters Type 2 69

Surge Arresters Type 3 119

Accessories 145

Measuring and Test Devices 365

POWER SUPPLY SYSTEMS

www.dehn.de 17

AccessoriesSurge Arresters

Type 3Surge Arresters

Type 2N-PE Lightning Current

Arresters Type 1Lightning CurrentArresters Type 1

Combined SPDs Type 1

CONTENTS

Accessories

Surge Arresters Type 3

Lightning CurrentArresters Type 1

N-PE Lightning CurrentArresters Type 1



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Easy Choice

18






L1L2L3N PE

DEHNguard

DGMOD275

DEHNguard

DGMOD275

L1 L2

PE

DEHNguard

DGMOD275

L3

DEHNguard

DGMOD275

N

9

DEHNguard

DGMOD275

DEHNguard

DGMOD275

L1 L2

PE

DEHNguard

DGMOD275

L3

DEHNguard

DGMOD275

N

9

L1 L2 L3 PEN

L1 L1 L2 L2 L3 L3

N /PE N N/PEN

DEHNbloc DB 3 255 H

L1 L1 L2 L2

PEN

L3 L3

DEHNventil

DVMOD255

DEHNventil

DVMOD255

DEHNventil

DVMOD255

9

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

S-Schutz

DEHNflex

16 A

SocketOutlet

1 x DSA 230 LA Part No. 924 370for cable ducts

1 x STC 230 Part No. 924 350for existing socket outlets

with remote signalling contact:1 x DG M TNS 275 FM Part No. 952 405

1 x DV M TNC 255 Part No. 951 300alt. 1 x DV M TNC 255 FM Part No. 951 305also available as

1 x DV M TNS 255 Part No. 951 400alt. 1 x DV M TNS 255 FM Part No. 951 405

1125 A 1125 A

1 x DG M TNS 275 Part No. 952 400

Cable length 15 m

1 x DB 3 255 H Part No. 900 120

alt. 3 x DB 1 255 H Part No. 900 2221 x MVS 1 6 Part No. 900 815

1315 A

3 x DB M 1 255 FM Part No. 961 1251 x MVS 1 6 Part No. 900 815

alt. 3 x DB M 1 255 Part No. 961 1201 x MVS 1 6 Part No. 900 815

SubdistributionBoard

1315 A

1 x DFL M 255 Part No. 924 396for flush-mounted systems

1315 A

Cablelength5m

SPD Type 3(Surge arrester)





indication

ofinterference

indication

ofinterference

EBB

1) Only required, if a fuse of the same or a lower nominal value is not already provided in the upstream power supply.

SPD Type 1(Combined lightning current

and surge arrester)

DEHNventil

Directly coordinated toRed/Line SPDs Type 2 and 3

without additional cable length.

For serial connection please see also page 21

SPD Type 1(Coordinated lightning

current arrester)

DEHNbloc MCoordinated to DEHNguard


SPD Type 1(Lightning current arrester)

MainDistributionB

oard

TN systems: Office Building Separation of the PEN in the main distribution board

Arrangement I Arrangement II Arrangement III

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PROTECTOR

berspannungsschutz

0 1

SFL-Protector

DEHNguard

DGMOD275

DEHNguard

DGMOD275

L1 L2

PEN

DEHNguard

DGMOD275

L3

9

DEHNguard

DGMOD275

DEHNguard

DGMOD275

L1 L2

PEN

DEHNguard

DGMOD275

L3

9

L1 L1 L2 L2 L3 L3

N /PE N N/PEN

DEHNbloc DB 3 255 H

L1 L1 L2 L2

PEN

L3 L3

DEHNventil

DVMOD255

DEHNventil

DVMOD255

DEHNventil

DVMOD255

9

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

L1 L2 L3 PEN

L1L2 L3 N PE

16 A

SocketOutlet

MainDistributionBoard


1 x NSM PRO EW Part No. 924 342 1 x DPRO 230 F Part No. 909 2401 x DPRO 230 Part No. 909 230

1 x SFL PRO Part No. 912 260

1 x DG M TNC 275 Part No. 952 300with remote signalling contact:1 x DG M TNC 275 FM Part No. 952 305

1 x DB 3 255 H Part No. 900 120

alt. 3 x DB 1 255 H Part No. 900 2221 x MVS 1 6 Part No. 900 815

1 x DV M TNC 255 Part No. 951 300

alt. 1 x DV M TNC 255 FM Part No. 951 305

1125 A 1125 A

1315 A 1315 A



1315 A




Cablelength5m

Cable length 15 m




and surge arrester)

DEHNventil





current arrester)





indication

ofinterference

indication

ofinterference

EBB

Easy Choice

19






TN systems: Example: Office Building Separation of the PEN in the subdistribution board


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L1 L2 L3 PEN

DEHNguard

DGMOD275

DEHNguard

DGMOD275

L1 L2

PEN

DEHNguard

DGMOD275

L3

9

VNHVNH00280

VNHVNH00280

VNHVNH00280

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHN SPD

SPS PRO

function

OUT / FM

99 / IN

DEHNrail

DRM4

P255FM

L1 L2 L3 N 9

L1 L2 L3 N 9

L1 L1 L2 L2

PEN

L3 L3

DEHNventil

DVMOD255

DEHNventil

DVMOD255

DEHNventil

DVMOD255

9

DEHNrail

DRM2P255FM

4 3

2 1

9

9

NETZFILTER

L L N NOUT

L L N NIN9 9

9 9

3 x V NH00 280 Part No. 900 261

3 x DBM NH00 255 Part No. 900 255

1315 A

1 x DV M TNC 255 FM Part No. 951 305

alt. 1 x DV M TNC 255 Part No. 951 300

1315 A

indication

ofinterference

1 x DG M TNC 275 Part No. 952 300or with remote signalling contact:1 x DG M TNC 275 FM Part No. 952 305

1125 A

13 A

1 x SPS PRO Part No. 912 253 1 x DR M 4P 255 FM Part No. 953 405alt. 1 x DR M 4P 255 Part No. 953 400

125 A

electronicequipment

1 x DR M 2P 255 FM Part No. 953 2051 x NF 10 Part No. 912 254

L1L2L3N PE

Cablelength5m

32 A

Switchgear/Machine



MainDistributionBo

ard



and surge arrester)




DEHNventil




2

SPS

1) Only required, if a fuse of the same or a lower nominal value is not already provided in the upstream power supply.2) Without separate backup fuse in case of earth-fault- and short-circuit-proof installation.


current arrester)





indication

ofinterference

indication

ofinterference

1315 A

110 A

SPS

25 A alsopermissiblewithout NF 10


current arrester)

DEHNblocMaxiDBMNH00255



EBB

TN systems: Example: Industry Separation of the PEN in the subdistribution board

Easy Choice

20







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PRO

TECTO

R

DEHNrail

DRM2

P255FM

21 9

DEHNventil ZP

DV ZP TNC 255

PEN9

PEN

L3

L2

L1

L1L2L3N PE

16 A

SocketOut

let

EBB

HeatingCon

trol

1 x DV ZP TNC 255 Part No. 900 390

also available for 5-wire systems1 x DV ZP TT 255 Part No. 900 391

Note:As an alternative, surge arresters can also beused downstream of meter panels

(e.g. DG M TNC 275 Part No. 952 300),if no

lightning protection system,

electrical power supply by the service entry mast,

antenna of the roof

is available. CentralM

ainand

Subdistribut

ionBoard

1 x DPRO 230 Part No. 909 2301 x DPRO 230 F Part No. 909 2401 x SFL PRO Part No. 912 2601 x DR M 2P 255 Part No. 953 200

KW h

heating

315 A

L1L2L3PEN


and surge arrester)



Cablelength5m

TT system: Example: Single-family house

Easy Choice

21






TN systems: Example: Single-family house

DEHNventil

DVMOD255

DEHNventil

DVMOD255

DEHNventil

DVMOD255

DEHNventil

DVMODNPE

50

L1 L2

PE

L3 N

9

DEHNrail

DRM2

P255FM

21 9

RCD

L1L2L3N PE

16 A

SocketOutlet

HeatingControl

1 x DV M TT 255 Part No. 951 310 CentralMainand


1 x DR M 2P 255 Part No. 953 200

EBB

25 A

1 x DFL M 255 Part No. 924 396

heating

L1L2L3N

DEHNflex

Cablelength5m

Note:As an alternative, surge arresters can also beused downstream of meter panels(e.g. DG M TT 275 Part No. 952 310),if no

lightning protection system,

electrical power supply by the service entry mast,

antenna of the roof

is available.


and surge arrester)



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for cable ducts for existing socket outletsfor flush-mounted systems

Cablelength5m





N

EBB

DEHNguard

DGMOD275

DEHNguard

DGMOD275

L1 L2

PE

DEHNguard

DGMOD275

L3 N

DEHNguard

DGMODNPE

9

DEHNguard

DGMOD275

DEHNguard

DGMOD275

L1 L2

PE

DEHNguard

DGMOD275

L3 N

DEHNguard

DGMODNPE

9

DEHNflex

S-Schutz

DEHNventil

DVMOD255

L1 L1 L2 L2

PE

L3 L3 N

9

DEHNventil

DVMOD255

DEHNventil

DVMOD255

DEHNventil

DVMODNPE50

N

PE

DEHNgap

DGPM2

55

9

DEHNbloc

DBM1

255

N/PE(N)

L/N

DEHNbloc

DBM1

255

N/PE(N)

L/N

DEHNbloc

DBM1

255

N/PE(N)

L/N

L1L2 L3 N

3 x DB M 1 255 Part No. 961 1201 x DGP M 255 Part No. 961 1011 x MVS 1 8 Part No. 900 611

1 x DV M TT 255 FM Part No. 951 315

alt. 1 x DV M TT 255 Part No. 951 310

1315 A

L1L2L3N PE

16 A

SocketOutlet

1 x DSA 230 LA Part No. 924 370 1 x STC 230 Part No. 924 350

with remote signalling contact:1 x DG M TT 275 FM Part No. 952 315

1125 A 1125 A

1 x DG M TT 275 Part No. 952 310



1 x DFL M 255 Part No. 924 396

RCD

1315 A

1 x DB 3 255 H Part No. 900 120alt. 3 x DB 1 255 H Part No. 900 222

1 x DGP BN 255 Part No. 900 1321 x DK 25 Part No. 952 6991 x MVS 1 2 Part No. 900 617

L1 L1 L2 L2 L3 L3

N /PE N N/PEN

DEHNbloc DB 3 255 HDEHNgap B/nDGP BN 255

1315 A

Fee

d-T

hroug

h

Termina

l

DK25

Cable length 15 m





current arrester)

DEHNventil





and surge arrester)

indication of interference

SPD Type 2

(Surge arrester)

SPD Type 2

(Surge arrester)

indication

ofinterference

TT systems: Example: Office Building

Easy Choice

22







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DEHNguard

DGMOD275

DEHNguard

DGMOD275

L1 L2

PE

DEHNguard

DGMOD275

L3 N

DEHNguard

DGMODNPE

9

DEHNguard

DGMOD275

DEHNguard

DGMOD275

L1 L2

PE

DEHNguard

DGMOD275

L3 N

DEHNguard

DGMODNPE

9

DEHNgapBNHDGPB NH00 N 255

DEHNventil

DVMOD255

L1 L1 L2 L2

PE

L3 L3 N

9

DEHNventil

DVMOD255

DEHNventil

DVMOD255

DEHNventil

DVMODNPE50

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

N

PE

DEHNgap

DGPM2

55FM

9

DEHNrail

DRM2P255FM

4 3

2 1

9

9

NETZFILTER

L L N NOUT

L L N NIN9 9

9 9

DEHN SPD

SPS PRO

function

OUT / FM

99 / IN

DEHNrail

DRM4

P255FM

L1 L2 L3 N 9

L1 L2 L3 N 9

L1L2L3 N

3 x DB NH00 255 H Part No. 900 2731 x DGP B NH00 N 255 Part No. 900 269

1315 A

1 x DV M TT 255 FM Part No. 951 315

alt. 1 x DV M TT 255 Part No. 951 310

1315 A

3 x DB M 1 255 FM Part No. 961 1251 x DGP M 255 FM Part No. 961 1051 x MVS 1 8 Part No. 900 611

1315 A

L1L2L3N PE

32 A

EBB

with remote signalling contact:1 x DG M TT 275 FM Part No. 952 315

1125 A 1125 A

1 x DG M TT 275 Part No. 952 310



13 A

1 x SPS PRO Part No. 912 253 1 x DR M 4P 255 FM Part No. 953 405alt. 1 x DR M 4P 255 Part No. 953 400

125 A

1 x DR M 2P 255 FM Part No. 953 2051 x NF 10 Part No. 912 254

110 A

Switchgear/Machine

SPS SPS

RCD

Cablelength5m




and surge arrester)




DEHNventil





current arrester)



indication

ofinterference


electronicequipment

indication

ofinterference

indication of interference


N

DEHNbloc NHDB NH00 255 H



Cable length 15 m

indication

ofinterference

25 A alsopermissiblewithout NF 10

TT systems: Example: Industry

Easy Choice

23







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www.dehn.de24






Easy Choice

DEHNguard

DGS440FM

DEHNguard

DGS440FM

DEHNguard

DGS440FM

N/PEN

L

DEHNbloc

Maxi

DBM1

440FM

N/PEN

L

DEHNbloc

Maxi

DBM1

440FM

N/PEN

L

DEHNbloc

Maxi

DBM1

440FM

L

DEHNbloc

Maxi

DBM1

760FM

L1 L2 L3 PEN

3 x DG S 440 FM Part No. 952 0951 x MVS 1 3 Part No. 900 615

125 A

EBB

250 A

3 x DBM 1 440 FM Part No. 961 145

alt. 3 x DBM 1 440 Part No. 961 1401 x EB DG 1000 1 3 Part No. 900 411

L1 L2 L3 PEN


indication

ofinterference


current arrester)

indication

ofinterference

1 x EB DG 1000 1 3 Part No. 900 411

TN systems: Industry TN-C 400/690 V IT systems: Industry IT 690 V, without integrated neutral conductor

N/PEN

L

DEHNbloc

Maxi

DBM1

760FM

N/PEN

L

DEHNbloc

Maxi

DBM1

760FM

N/PEN

L

DEHNbloc

Maxi

DBM1

760FM

DEHNguardDG 1000 FM

DEHNguardDG 1000 FM

DEHNguardDG 1000 FM

L1 L2 L3 PE

3 x DBM 1 760 FM Part No. 961 1751 x EB DG 1000 1 3 Part No. 900 411

3 x DG 1000 FM Part No. 950 1121 x EB DG 1000 1 3 Part No. 900 411

100 A aM

250 A

L1 L2 L3 PE



current arrester)

indication

ofinterference

indica

tion

ofinterference

EBB

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www.dehn.de 25






Easy Choice

L1L2L3N PE

DEHNguard

DGMODCI

275

DEHNguard

L1 L2

PE

DEHNguard

L3

DEHNguard

DGMOD275

N

9

L1 L2 L3 PEN

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNbloc

DBM1

255FM

N/PE(N)

L/N

DEHNflex

16 A

SocketOutlet

with remote signalling contact:1 x DG M TNS CI 275 FM Part No. 952 406





1 x DFL M 255 Part No. 924 396for flush-mounted systems

1315 A

Cablelength5m



indication

ofinterference

indication

ofinterference

EBB

1) Only required, if a fuse of the same or alower nominal value is not alreadyprovided in the upstream power supply.


current arrester)



DGMODCI

275

DGMODCI

275

IK 25 kA

TN systems TT systems

for flush-mounted systems

Cablelength5m


EBB

L1 L2

PE

L3 N

DEHNguard

DGMODNPE

9

DEHNflex

N

PE

DEHNgap

DGPM2

55

9

DEHNbloc

DBM1

255

N/PE(N)

L/N

DEHNbloc

DBM1

255

N/PE(N)

L/N

DEHNbloc

DBM1

255

N/PE(N)

L/N

L1L2 L3 N

3 x DB M 1 255 Part No. 961 1201 x DGP M 255 Part No. 961 1011 x MVS 1 8 Part No. 900 611

L1L2L3N PE

16 A

SocketOutlet

with remote signalling contact:1 x DG M TT CI 275 FM Part No. 952 327



1 x DFL M 255 Part No. 924 396

RCD

1315 A




current arrester)

SPD Type 2

(Surge arrester)

indication

ofinterference

DEHNguard

DGMODCI

275

DEHNguard

DEHNguard

DGMODCI

275

DGMODCI

275

1) Only required, if a fuse of the same or alower nominal value is not alreadyprovided in the upstream power supply.I

K 25 kA

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Easy Choice of SPDs for Use in Photovoltaic Systems

d.c. arresters

1

5Type 1 combined lightning currentand surge arrester for use in photo-voltaic systems

DLM PV 1000 Part No. 900 330

a.c. arresters

Modular surge arrester for use in single-phase230 V TN power supply systems

DG M TN 275 Part No. 952 200DG M TN 275 FM Part No. 952 205

2Modular surge arrester for use in single-phase230 V TT power supply systems

DG M TT 2P 275 Part No. 952 110DG M TT 2P 275 FM Part No. 952 115

2

Multipole combined lightning current and surgearrester for use in three-phase power supply sys-tems

DV M TNC 255 Part No. 951 300DV M TNC 255 FM Part No. 951 305

DV M TNS 255 Part No. 951 400DV M TNS 255 FM Part No. 951 405

DV M TT 255 Part No. 951 310DV M TT 255 FM Part No. 951 315

3

Modular combined lightning current and surgearrester for use in single-phase TN power supplysystems

DV M TN 255 Part No. 951 200DV M TN 255 FM Part No. 951 205

4 Modular combined lightning current and surgearrester for use in single-phase TT and TN-S powersupply systems

DV M TT 2P 255 Part No. 951 110DV M TT 2P 255 FM Part No. 951 115

4

Modular multipole surge arrester for use in three-phase power supply systems

DG M TNC 275 Part No. 952 300DG M TNC 275 FM Part No. 952 305

DG M TNS 275 Part No. 952 400DG M TNS 275 FM Part No. 952 405

DG M TT 275 Part No. 952 310DG M TT 275 FM Part No. 952 315

6

Modular surge arrester as complete unit for use inphotovoltaic systems

DG M YPV SCI 600 Part No. 952 511DG M YPV SCI 600 FM Part No. 952 516



max. PV voltage unearthed / functionally earthed

up to 600 V d.c. Part No. 952 511 (952 516)

up to 1000 V d.c. Part No. 952 510 (952 515)

up to 1200 V d.c. Part No. 952 512 (952 517)

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PV system on a building with external lightning protection system.

27






Equipotential bonding

For lightning and surge protection reasons, it is strongly recommended toconnect the PV frame as follows to the equipotential bonding system:

Defined connection with at least 16 mm2 copper at the PV frame (b).

Defined connection with at least 6 mm2 copper at the PV frame(a + c).

Electrically conductive connection of the PV frames has to be ensured.

The earth conductor is connected to the main earthing busbar of thebuilding on ground level.

The earth conductor has to be installed in parallel and in close proxi-mity to the d.c. and a.c. cables / lines and accessory.

kWh kWh

s

s

=

~

SEB

a.c.output

d.c. input

meter/distribution board

power supply

s12

3

separationdistance OK

6

SEB

kWh kWh

power supply

< s< s

=

~

54

3

< s

a.c.output

d.c. input


separationdistancenot OK

3

kWh kWh

=

~

SEB

a.c.output

d.c. input


power supply

12

6

6

Easy Choice of SPDs for Use in Photovoltaic Systems

a) if the separation distance s is observed b) if the separation distance s is not observed

PV system on a building without external lightning protection system.

c)

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Power Supply Systems Worldwide

L1

L2

L3

PEN

RB

L1

L2

L3

N

RB

PE

L1

L2

L3

N

PE

RB

TN-C system TN-S system

L1

L2

L3

N

RB RA

PE

L1

L2

L3

RA

PE

TN-C system 230 / 400 V

TN-S system 230 / 400 V

TN-C-S system 230 / 400 V

TT system 230 / 400 V IT system 230 V, 400 V, 500 V, 690 V

L

N

G

L1

N

GL2

L1

G

L2

L3

L1

G

L2L3

N

L1

G

L2

L3

N

L1

G

L2

L3

L1

G

L2

L3

single-phase; 3 conductors

(1 Ph, 2 W + G)

110 V120 V220 V240 V

single-phase; 4 conductorsSplit Phase or Edison

(1 Ph, 3 W + G)

120 V / 240 V

3-phase; 4 conductors

(3 Ph Y, 3 W + G)

480 V


(3 Ph Y, 4 W + G)

120 V / 208 V277 V / 480 V

3-phase; 5 conductorsDelta Highleg

(3 Ph , 4 W + G)

120 V / 240 V

3-phase; 4 conductorsDelta Ungrounded

(3 Ph , 3 W + G)

240 V480 V

3-phase; 4 conductorsDelta Grounded Corner

(3 Ph , 3 W + G)

240 V480 V

R

N

100 V

R

T

200 V

R

N

100 V

100 V

200 V

T


(1 Ph, 2 W)

200 V


(1 Ph, 3 W)

100 V / 200 V


(1 Ph, 2 W)

100 V

R

S

200 V

200 V

200 V

T

R

S

100 V

100 V200 V

T

N200 V

200 V

3-phase; single-phase;

3 conductors+

3 conductors

100 V / 200 V; 200 V


(3 Ph, 3 W)

200 V

International system configurations* according to IEC 60364-1 (DIN VDE 0100-100)

Further system configurations* used worldwide

* System according to earth connection (according to DIN VDE 0100-100)


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Cross-reference


900 370 DV 2P TT 255 951 110 DV M TT 2P 255 or951 115 DV M TT 2P 255 FM

900 371 DV 2P TN 255 951 200 DV M TN 255 or951 205 DV M TN 255 FM

900 373 DV TNC 255 951 300 DV M TNC 255 or951 305 DV M TNC 255 FM

900 374 DV TNS 255 951 400 DV M TNS 255 or951 405 DV M TNS 255 FM

900 375 DV TT 255 951 310 DV M TT 255 or951 315 DV M TT 255 FM

Coordinated Lightning Current Arresters Type 1

900 015 DBM 1 135 961 110 DB M 1 150 or961 115 DB M 1 150 FM

900 016 DBM 1 320 961 130 DB M 1 320 or961 135 DB M 1 320 FM

900 025 DBM 1 255 961 120 DB M 1 255

900 026 DBM 1 255 L 961 125 DB M 1 255 FM

900 044 DBM 440 961 140 DBM 1 440 or961 145 DBM 1 440 FM

900 055 DGPM 255 961 101 DGP M 255 or961 105 DGP M 255 FM

Lightning Current Arresters Type 1

900 100 DP 255 961 120 DB M 1 255 or900 222 DB 1 255 H

900 101 DP 440 961 140 DBM 1 440 or900 159 DB 1 440

900 110 DB 3 255 900 120 DB 3 255 H

900 111 DB 1 255 900 222 DB 1 255 H

900 260 DB NH00 255 900 273 DB NH00 255 H


900 133 DGP C T 255 952 030 DGP C S or952 035 DGP C S FM

900 265 V NH1 3 900 270 V NH1 280

900 266 VA NH1 3 900 271 VA NH1 280

900 506 DG TN 230 952 200 DG M TN 275

900 507 DG TN 230 FM 952 205 DG M TN 275 FM

900 508 DG TT 230 952 110 DG M TT 2P 275

900 509 DG TT 230 FM 952 115 DG M TT 2P 275 FM

900 510 DG TNC 230 400 952 300 DG M TNC 275

900 516 DG IT 500 952 302 DG M WE 600

900 517 DG Y PV 1000 952 510 DG M YPV SCI 1000952 511 DG M YPV SCI 6002x 950 500 2x DG PV 500 SCP

900 520 DG TT 230 400 952 310 DG M TT 275

900 530 DG TNS 230 400 952 400 DG M TNS 275900 540 DG TNC 230 400 FM 952 305 DG M TNC 275 FM

900 546 DG IT 500 FM 952 307 DG M WE 600 FM

900 547 DG Y PV 1000 FM 952 515 DG M YPV SCI 1000 FM952 516 DG M YPV SCI 600 FM2x 950 505 2x DG PV 500 SCP FM

900 550 DG TT 230 400 FM 952 315 DG M TT 275 FM

900 560 DG TNS 230 400 FM 952 405 DG M TNS 275 FM

900 600 DG 275 952 070 DG S 275

900 601 DG 600 952 076 DG S 600

900 602 DG 385 952 074 DG S 385

900 603 DG 150 952 072 DG S 150

900 604 DG 75 952 071 DG S 75

900 605 DG 320 952 073 DG S 320

900 607 DG 440 952 075 DG S 440

900 620 DG 275 FM 952 090 DG S 275 FM

900 621 DG 600 FM 952 096 DG S 600 FM

900 622 DG 385 FM 952 094 DG S 385 FM

900 623 DG 150 FM 952 092 DG S 150 FM

900 624 DG 75 FM 952 091 DG S 75 FM

900 625 DG 320 FM 952 093 DG S 320 FM

900 627 DG 440 FM 952 095 DG S 440 FM

900 641 DG T 385 952 074 DG S 385

900 650 DG T 275 952 070 DG S 275

900 651 DG T 600 952 076 DG S 600900 652 DG T 320 952 073 DG S 320

900 653 DG T 150 952 072 DG S 150

900 654 DG T 75 952 071 DG S 75

900 655 DG T 440 952 075 DG S 440

900 659 DG T 275 VA 952 082 DG S 275 VA

900 667 DG T 75 VA 952 080 DG S 75 VA

900 680 DG T 275 FM 952 090 DG S 275 FM

900 681 DG T 600 FM 952 096 DG S 600 FM

900 682 DG T 320 FM 952 093 DG S 320 FM

900 683 DG T 150 FM 952 092 DG S 150 FM

900 684 DG T 75 FM 952 091 DG S 75 FM

900 685 DG T 440 FM 952 095 DG S 440 FM

900 689 DG T 275 VA FM 952 087 DG S 275 VA FM900 691 DG T 385 FM 952 094 DG S 385 FM

900 692 DG T 75 VA FM 952 085 DG S 75 VA FM

901 000 VAV 1000 950 102 DG 1000 or950 112 DG 1000 FM

902 375 VA NH00 280 3 IG FM

902 376 VA NH00 280 4 IG FM

902 385 VA NH00 280 3 IG

902 386 VA NH00 280 4 IG

950 220 DG T 48 952 078 DG S 48

950 225 DG T 48 FM 952 098 DG S 48 FM


901 100 DR 230 FML 953 205 DR M 2P 255 FM or

953 200 DR M 2P 255901 101 DR 120 FML 953 209 DR M 2P 150 FM or

953 204 DR M 2P 150

901 102 DR 60 FML 953 208 DR M 2P 75 FM or953 203 DR M 2P 75



901 130 DR 230 3N FML 953 405 DR M 4P 255 FM or953 400 DR M 4P 255

909 820 SF PRO 909 240 DPRO 230 F

909 821 S PRO 909 230 DPRO 230

Mains Connection Boxes

900 964 NAK 63A 4 951 400 DV M TNS 255

900 965 NAK 63A 3 951 300 DV M TNC 255

900 966 NAK 35A 4 951 400 DV M TNS 255

900 967 NAK 35A 3+1 951 310 DV M TT 255

900 968 NAK 35A 3 951 300 DV M TNC 255

900 969 NAK 63A 3+1 951 310 DV M TT 255

902 492 NAK TAB 3 900 390 DV ZP TNC 255

902 493 NAK TAB 3+1 900 391 DV ZP TT 255

902 494 NAK TAB 4 900 391 DV ZP TT 255

Accessories

900 309 IGA 10 IP54 902 315 IGA 10 V2 IP54

902 480 IGA 10 IP55 902 315 IGA 10 V2 IP54

900 121 DBR 35

900 122 DBR 63

900 699 DK 35 952 699 DK 25

Isolating Spark Gaps

923 070 EXFS C1 923 100 EXFS 100

923 071 EXFS C1 KU 923 101 EXFS 100 KU

Discontinued Products AlternativesPart No. Type Part No. Type

Discontinued Products AlternativesPart No. Type Part No. Type

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COMBINED SPDs TYPE 1

31www.dehn.de





Combined SPDsType 1

Combine

dSPDsType1

DEHNventil modular

Multipole modular combined lightning current andsurge arresterSPD Type 1 according to EN 61643-11

SPD Class I according to IEC 61643-1

Prewired spark-gap-based combined lightningcurrent and surge arrester, consisting of a basepart and plug-in protection modules

Maximum system availability due to RADAXFlow follow current limitation

No tripping of 20 A gL/gG fuses up to short-cir-cuit currents of 50 kArms

Discharge capacity up to 100 kA (10/350 s)

Protection of terminal devices

Operating state/fault indication by indicatorflag in the inspection window

Easy replacement of protection modules with-out tools due to module locking system withmodule release button

Vibration- and shock-tested according to EN60068-2

For protecting low-voltage consumers installations against surges andeven direct lightning strikes. For installation in conformity with the light-ning protection zones concept at the boundaries from 0A 2.

With their functional Red/Line design, the devices of the modularDEHNventil family combine safety and innovation. Designed for all-in-one installation, the SPDs integrate lightning equipotential bonding andprotection against surges in a single device.This function is particularly ofadvantage in compact electrical installations. The design of the SPDsaccording to energy coordination criteria even allows protection of termi-

nal devices if they are close to the consumers ( ) 5 m). With their light-ning current discharge capacity up to 100 000 A, the SPDs ensure highavailability of the electrical installation to be protected. Even for expand-ed electrical installations, the modular DEHNventil devices offer variousapplication possibilities. Red/Line surge arresters installed at the bound-aries of the individual lightning protection zones are already energy-coor-dinated with DEHNventil devices. By using encapsulated creepage dis-charge spark gaps, combined with a compact design, DEHNventil unitsare well suited for use in switchgear installations or distribution boards.A special feature of the new modular DEHNventil family is its functionaldesign.The module release button is a key element. It ensures reliable fix-ation of the protection module to keep the safe connection to the basepart even in case of maximum loads. If protection modules have to bereplaced, the module is released without tools and can be removed easi-ly.The devices incorporate double terminals which are suitable for all con-ductors, allowing series connection in a space- and cost-effective wayaccording to IEC 60364-5-53 requirements for nominal currents up to125 A. For connecting further DIN rail mounted devices, busbars of type

MVS 3 8 6 and MVS 4 11 8 can beused. The right DEHNventil devicescan be easily chosen according tothe system configuration of thelow-voltage consumers installa-tion and type designation of the

device.

The patented RADAX Flow technol-ogy ensures follow current limita-tion and extinction as well as max-imum system availability of electri-cal installations to be protected. Even in case of short-circuit currents ashigh as 50 kArms, mains follow currents are reduced in such a way thatthere is a selectivity to lower fuse values, i.e. upstream fuses will not tripdue to arising mains follow currents.

The operating state/fault indication of each protective circuit immediate-ly provides information on the operating state of the surge arrester evenif no operating current is present. Apart from the standard green and redindicator, DEHNventil M ... FM devices feature a three-pole terminal forremote signalling.With their floating changeover contact, the remote sig-nal can be used as a break or make contact according to the particular cir-cuit concept.

DEHNventil M TNC 255: Modular combined lightning current and surge arrester for use in TN-C systems

DEHNventil M TNS 255: Modular combined lightning current and surge arrester for use in TN-S systems

DEHNventil M TT 255: Modular combined lightning current and surge arrester for use in TT and TN-S systems

(3+1 circuit)DEHNventil M TN 255: Modular combined lightning current and surge arrester for use in single-phase TN systems

DEHNventil M TT 2P 255: Modular combined lightning current and surge arrester for use in single-phase TT and TN systems(1+1 circuit)

DEHNventil M ... FM: With remote signalling contact for monitoring device (floating changeover contact)

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Combined SPDsType 1

DEHNventil modular

DEHNventil M TNC (FM)951 300 DV M

TNC255

951 305 DV M

TNC255FM

DVM TN C2 5 5

951 300

DVM TN C2 5 5 FM

951 305

12

1114

L2 L2

PEN

L1 L1 L3 L3

Basic circuit diagram DV M TNC 255 FM Dimension drawing DV M TNC 255 (FM)

DV M TNC 255 (FM): Modular combined lightning current and surge arrester for protecting TN-Csystems against surges

DV M TNC 255 DV M TNC 255 FM

SPD according to EN 61643-11 / ... IEC 61643-1 Type 1 / Class I Type 1 / Class I

Energy-coordinated protection effect with

regard to the terminal equipment Type 1 + Type 2 Type 1 + Type 2


regard to the terminal equipment ( ) 5m) Type 1 + Type 2 + Type 3 Type 1 + Type 2 + Type 3

Nominal a.c. voltage UN 230 / 400 V 230 / 400 V

Max. continuous operating a.c. voltage UC 255 V 255 V

Lightning impulse current (10/350 s) [L1+L2+L3-PEN] Itotal 75 kA 75 kA

Lightning impulse current (10/350 s) [L-PEN] Iimp 25 kA 25 kA

Nominal discharge current (8/20 s) In 25 / 75 kA 25 / 75 kA

Voltage protection level UP ) 1.5 kV ) 1.5 kV

Follow current extinguishing capability a.c. Ifi 50 kArms 50 kArms

Follow current limitation/Selectivity no tripping of a 20 A gL/gG fuse up to 50 kA rms (prosp.) no tripping of a 20 A gL/gG fuse up to 50 kArms (prosp.)

Response time tA ) 100 ns ) 100 ns

Max. backup fuse (L) up to IK = 50 kArms 315 A gL/gG 315 A gL/gG

Max. backup fuse (L) for IK > 50 kArms 200 A gL/gG 200 A gL/gG

Max. backup fuse (L-L) 125 A gL/gG 125 A gL/gG

Temporary overvoltage (TOV) UT 440 V / 5 sec. 440 V / 5 sec.

TOV characteristics withstand withstand

Operating temperature range [parallel]/[continuity] TU -40C...+80C / -40C...+60C -40C...+80C / -40C...+60C

Operating state/fault indication green / red green / red

Cross-sectional area (L1, L1 , L2, L2 , L3, L3 , PEN,9) min. 10 mm2 solid/flexible 10 mm2 solid/flexible

Cross-sectional area (L1, L2, L3, PEN) max. 50 mm2 stranded/35 mm2 flexible 50 mm2 stranded/35 mm2 flexible

Cross-sectional area (L1 , L2, L3,9) max. 35 mm2 stranded/25 mm2 flexible 35 mm2 stranded/25 mm2 flexible

For mounting on 35 mm DIN rail acc. to EN 60715 35 mm DIN rail acc. to EN 60715

Enclosure material thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0

Degree of protection IP 20 IP 20Capacity 6 mods., DIN 43880 6 mods., DIN 43880

Approvals, Certifications KEMA,VDE, UL,VdS KEMA, VDE,UL, VdS

Type of remote signalling contact changeover contact

Switching capacity a.c. 250 V/0.5 A

Switching capacity d.c. 250 V/0.1 A; 125 V/0.2 A; 75 V/0.5 A

Cross-sectional area for remote signalling terminals max. 1.5 mm2 solid/flexible

Ordering information

Type DV M TNC 255 DV M TNC 255 FM

Part No. 951 300 951 305

Packing unit 1 pc(s). 1 pc(s).

Accessory part for DEHNventil modular

Spark-gap-based protection modulePU Part

Type pc(s). No.

DV MOD 255 1 951 001

951 001 DV MOD

255

DVM O D2 5 5

951 001

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Combined SPDsType 1

Combine

dSPDsType1

DEHNventil modular

DEHNventil M TNS (FM)DV M TNS

DV M TNS

12

1114

L2 L2 N N

PE

L1 L1 L3 L3

Basic circuit diagram DV M TNS 255 FMDimension drawing DV M TNS 255 (FM)

DV M TNS 255 (FM): Modular combined lightning current and surge arrester for protecting TN-Ssystems against surges

DV M TNS 255 DV M TNS 255 FM

SPD according to EN 61643-11 / ... IEC 61643-1 Type 1 / Class I Type 1 / Class I


regard to the terminal equipment Type 1 + Type 2 Type 1 + Type 2


regard to the terminal equipment ( ) 5m) Type 1 + Type 2 + Type 3 Type 1 + Type 2 + Type 3

Nominal a.c. voltage UN 230 / 400 V 230 / 400 V

Max. continuous operating a.c. voltage UC 255 V 255 V

Lightning impulse current (10/350 s) [L1+L2+L3+N-PE] Itotal 100 kA 100 kA

Lightning impulse current (10/350 s) [L, N-PE] Iimp 25 kA 25 kA

Nominal discharge current (8/20 s) In 25 / 100 kA 25 / 100 kA

Voltage protection level [L-PE]/[N-PE] UP ) 1.5 kV / ) 1.5 kV ) 1.5 kV / ) 1.5 kV

Follow current extinguishing capability a.c. Ifi 50 kArms 50 kArms

Follow current limitation/Selectivity no tripping of a 20 A gL/gG fuse up to 50 kA rms (prosp.) no tripping of a 20 A gL/gG fuse up to 50 kArms (prosp.)

Response time tA ) 100 ns ) 100 ns

Max. backup fuse (L) up to IK = 50 kArms 315 A gL/gG 315 A gL/gG

Max. backup fuse (L) for IK > 50 kArms 200 A gL/gG 200 A gL/gG

Max. backup fuse (L-L) 125 A gL/gG 125 A gL/gG

Temporary overvoltage (TOV) [L-N] UT 440 V / 5 sec. 440 V / 5 sec.

TOV characteristics withstand withstand

Operating temperature range [parallel]/[continuity] TU -40C...+80C / -40C...+60C -40C...+80C / -40C...+60C

Operating state/fault indication green / red green / red

Cross-sectional area (L1, L1 , L2, L2 , L3, L3 , N, N, PE,9) min. 10 mm2 solid/flexible 10 mm2 solid/flexible

Cross-sectional area (L1, L2, L3, N, PE) max. 50 mm2 stranded/35 mm2 flexible 50 mm2 stranded/35 mm2 flexible

Cross-sectional area (L1, L2, L3, N,9) max. 35 mm2 stranded/25 mm2 flexible 35 mm2 stranded/25 mm2 flexible

For mounting on 35 mm DIN rail acc. to EN 60715 35 mm DIN rail acc. to EN 60715

Enclosure material thermoplastic, red, UL 94 V-0 thermoplastic, red, UL 94 V-0

Degree of protection IP 20 IP 20Capacity 8 mods., DIN 43880 8 mods., DIN 43880

Approvals, Certifications KEMA, VDE, UL,VdS KEMA, VDE,UL, VdS

Type of remote signalling contact changeover contact

Switching capacity a.c. 250 V/0.5 A

Switching capacity d.c. 250 V/0.1 A; 125 V/0.2 A; 75 V/0.5 A

Cross-sectional area for remote signalling terminals max. 1.5 mm2 solid/flexible

Ordering information

Type DV M TNS 255 DV M TNS 255 FM

Part No. 951 400 951 405

Packing unit 1 pc(s). 1 pc(s).

Accessory part for DEHNventil modular

951 001 DV MOD

255

DV MOD 255 Kombi-

Able it er- Schutzmodul 951 001

Spark-gap-based protection modulePU Part

Type pc(s). No.

DV MOD 255 1 951 001

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Combined SPDsType 1

DEHNventil modular

DEHNventil M TT (FM)951 310 DV M TT

255

951 315 DV M TT

255FM

DVM TT2 5 5

951 310

DVM TT2 5 5 FM

951 315

12

1114

L2 L2 N N

PE

L1 L1 L3 L3

NPE

Basic circuit diagram DV M TT 255 FM Dimension drawing DV M TT 255 (FM)

DV M TT 255 (FM): Mod

Documents

UE 2010 E Complete