www.dehn-international.com

Application-optimised DEHNshield® Combined Arrester

with remote signal-

ling contact (FM)NEW

DEHNshield® protects residential buildings and special applications

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Ideally suited for residential buildingsDEHNshield® is a space-saving and application-optimised protection solution for residential buildings. It can be opti-mally integrated in this field of application without requiring an additional backup fuse*.

Installation upstream of the meter panelDEHNshield® is fully compliant with the German VDN directive and can thus be installed upstream of the meter panel. This is a significant advantage compared with type 1 varistor-based arresters.

Space savingsDEHNshield® takes up only 4 standard DIN modules and is thus suited for restricted installation situations. Moreover, no additional backup fuse is required up to 160 A.

Protection of terminal devicesDue to the wave breaker function, DEHNshield® reduces the lightning impulse to a minimum, thus preventing negative interaction with the electrical installation.

Easy remote monitoringDEHNshield® can be easily remotely monitored thanks to the floating remote signalling contact.

Optimised protective effectDEHNshield® can be connected in series using the STAK 25 terminal, thus ensuring maximum system protection.

* In case if system backup fuses are up to 160 A.** Recommended according to VdS 2031: Lightning and surge protection in electrical installation.

Numerous fields of application:

• Buildings with external lightning protection system according to class of LPS III / IV

• Buildings without external lightning protection system with roof-mounted structures, e.g. antennas or satellite systems**

• Buildings without external lightning protection system where power is supplied through an overhead line**

• For protecting outdoor electrical loads, e.g. outdoor lights, charging stations for electric vehicles, barriers

3

i [kA]

t [ms]

total current

current flowing through combined arrester (spark gap)

current flowing into the device to be protected

i [kA]

t [ms]

total current

current flowing through combined arrester (varistor)

current flowing into the device to be protected

Spark gap: Comprehensive protection• Reduction of the impulse time thanks to wave breaker function• Almost no energy load on terminal equipment (red area)

Only spark-gap-based combined arresters combine lightning equipotential bonding and protection of terminal equipment in a single device.

DEHNshield® lives up to what other arresters promise: Protection of terminal equipment thanks to spark gap technology

Varistor: Insufficient protection• Current flows through the terminal equipment over the entire duration of 10/350 μs impulse currents• Energy overload or even destruction of terminal equipment (red area)

Benefits of a spark-gap-based arrester over a varistor-based arrester

DEHNshield® with spark gap

Type 1 arrester with varistor

Energy coordination with type 1 + type 2 + type 3 arresters ✔ ✕

Protection of terminal equipment ✔ ✕

Reduction of the impulse time thanks to wave breaker function ✔ ✕

No leakage currents and thus ideally suited for use upstream of the meter panel ✔ ✕

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with remote signal-

ling contact (FM)NEW

• Application-optimised and prewired spark-gap-based type 1 + type 2 combined arrester• With remote signalling contact for remote monitoring • Compact and space-saving design thanks to spark gap technology without venting means with a width of 1 standard DIN module / pole • Fulfilsminimumrequirementsonthelightningdischarge capacity according to IEC 60364-5-53

DEHNshield®: Application-optimised combined arrester

Technical data

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

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

Lightning impulse current (10/350 µs) Itotal 25/50 kA

Lightning impulse current (10/350 µs)/pole Iimp 12.5 kA

Voltage protection level UP 1.5 kV

Follow current extinguishing capability Ifi 25 kArms

Max. mains-side overcurrent protection 160 A gL/gG

Type of remote signalling contact Changeover contact

Approval KEMA

Accessories for DEHNshield®

STAK 25 952 589

DEHNshield® types

DSH TNS 255DSH TNS 255 FM

941 400941 405

DSH TT 255DSH TT 255 FM

941 310941 315

DSH TNC 255DSH TNC 255 FM

941 300941 305

DSH TN 255DSH TN 255 FM

941 200941 205

DSH TT 2P 255DSH TT 2P 255 FM

941 110941 115

• No negative interaction with the electrical installation• Compactlightningequipotentialbondingandprotection ofterminalequipment• High lightning current discharge capacity up to 50 kA (10/350 µs) – class of LPS III• Green/red operating state/fault indication

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wird von SOD retuschiert (Beschriftung DEHNshield)

Residential buildings: Installation in the main distribution board (meter panel)

VNB MEB

kWh

SEB

DEHNshield

For buildings with external lightning protection system*.

For buildings without external lightning protection system with roof-mounted systems, for example antennas**.

For buildings without external lightning protection system where power is supplied through an over-head line**.

kWh

SEBMEBVNB

DEHNshield

MEBVNB

kWh

SEB

DEHNshield

MEB

SEB

kWh

DEHNshield

One of the mentioned conditions applies to a building in close proximity.

* fulfils minimum requirements of IEC 60364-5-53: Low-voltage electrical installations ** according to VdS 2031: Lightning and surge protection in electrical systems

SEB: Service Entrance Box / MEB: Main Earthing Busbar / VNB: Utility6

~=

HES DEHNshieldVNB

NSHV

Special applications: Installation at the transitions of lightning protection zones

For connecting outdoor electrical loads (LPZ 0A) to the power supply system in the main building, for example, outdoor lighting, charging stations for electric vehicles or barriers.

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www.dehn-international.com

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Surge ProtectionLightning ProtectionSafety EquipmentDEHN protects.

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