Page 31 - Surge-Protection-E_0.pdf

Combined Arresters – Type 1 + Type 2

DEHNshield
• Application-optimised and prewired spark-gap-based type
1 + type 2 combined lightning current and surge arrester
• Compact design due to space-saving spark gap technology
with a width of only one module / pole
• Fulfils the minimum requirements on the lightning current
discharge capacity according to IEC 60364-5-53
• Allows compact lightning equipotential bonding including
protection of terminal equipment
• Discharge capacity up to 50 kA (10/350 µs)
• Operating state / fault indication by green / red indicator flag
in the inspection window Combined Arresters – Type 1 + Type 2
• High follow current extinguishing capacity (Ifi = 25 kArms)

For protecting compact low-voltage consumer's installations against surges and
even direct lightning strikes. For installation in conformity with the lightning pro-
tection zone concept at the boundaries from 0A – 2.

DaEHNshield TNC 255: Application-optimised combined lightning current and surge arrester for TN-C systems
DEHNshield TNS 255: Application-optimised combined lightning current and surge arrester for TN-S systems
DEHNshield TT 255: Application-optimised combined lightning current and surge arrester for TT and TN-S systems (3+1 configuration)
DEHNshield TN 255: Application-optimised combined lightning current and surge arrester for single-phase TN systems
DEHNshield TT 2P 255: Application-optimised combined lightning current and surge arrester for single-phase TT and TN systems
(1+1 configuration)
DEHNshield … FM: With remote signalling contact for monitoring device (floating changeover contact)

The space-saving and application-optimised DEHNshield family offers The follow-current-limiting spark gap technology ensures selectivity with
various benefits provided by type 1 + type 2 spark-gap-based arresters regard to low-current-rated fuses (35 A gG). This means that upstream
such as the “wave breaker function” (WBF). This function and the associ- fuses will not trip due to mains follow currents.
ated reduction of the pulse time mitigate the energy of the lightning im- Busbars and pin-shaped terminals from DEHN can be used for connecting
pulse current to an acceptable level for downstream protection stages or DEHNshield to other DIN rail mounted devices. The type designation of
terminal equipment. Moreover, DEHNshield arresters are directly energy DEHNshield makes it easy to choose the right arrester for the relevant
coordinated with other arresters of the Red/Line product family. system configuration of the low-voltage consumer’s installation.
Application-optimised DEHNshield combined lightning current and surge The operating state / fault indicator of every protective path does not
arresters combine lightning equipotential bonding up to lightning impulse cause operating currents and instantly shows the operating state of the
currents of 50 kA (10/350 µs) and surge protection in a single device. arrester. Apart from the standard visual indicator with green and red indi-
This clearly distinguishes DEHNshield from varistor-based arresters of this cator flags, the DEHNshield ... FM versions feature a three-pole remote
application and performance class. signalling terminal. As the remote signalling contact is designed as a float-
Due to their technical parameters and the very compact design as spark- ing changeover contact, the remote signal can, depending on the circuit
gap-based arresters with only one module / pole, DEHNshield arresters concept, be used as a make or break contact.
are ideally suited for this application class. For this reason, they are a Due to their parameters and design,
space-saving and application-optimised solution in particular for residen- DEHNshield devices can even be in-
tial buildings. stalled upstream of meter panels in
DEHNshield arresters also provide optimal protection in existing buildings low-voltage consumer installations.
without an external lightning protection system where roof superstruc-
tures or overhead line supplies are installed which require type 1 SPDs
according to VdS 2031.
No additional backup fuse is required if an installation is protected by
backup fuses up to 160 A.
The energy-coordinated arresters even protect terminal equipment if the
distance between DEHNshield and the consumers is ≤ 10 m. The non-ex-
hausting spark gap and the small space requirements of the applica- Series connection by means of a
tion-optimised combined lightning current and surge arresters enable lightning-current-tested STAK 25 pin-
easy integration into distribution boards. shaped terminal

Valid as of August 1, 2020 You will find detailed product information on our website 27