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DEHNshield Application-optimised Multipole Combined Lightning Current and Surge Arresters


  Application-optimised prewired combined lightning current and surge arrester based on spark gap technology
  Space-saving arrester for compact and simply equipped electrical installations with reduced technical requirements
  Capable of protecting terminal equipment
  Discharge capacity up to 50 kA (10/350 μs)
  No tripping of 32 A gL/gG fuses up to shortcircuit currents of 25 kArms
  Operating state/fault indication by indicator flag in the inspection window

The space-saving and application-optimised DEHNshield family offers various benefits that are characteristic of spark-gap-based Type 1 arresters such as the "wave breaker function" (WBF). This function and the associated reduction of the pulse time mitigate the energy of the lightning impulse current to an acceptable level for downstream protection stages or terminal equipment. Moreover, DEHNshield arresters are directly energy coordinated with other arresters of the Red/Line product family.

Application-optimised DEHNshield combined lightning current and surge arresters combine lightning equipotential bonding up to 50 kA (10/350 žs) lightning impulse currents and surge protection in a single device. This clearly distinguishes DEHNshield from varistor-based arresters of this application and performance class.

Due to their technical parameters which are rated for use in simple and compact electrical installations, DEHNshield arresters are ideally suited for this application class. For this reason, they are a space-saving and application-optimised solution in particular for residential buildings. DEHNshield arresters also provide optimal protection in buildings without external lightning protection system where roof superstructures or overhead line supplies are installed. According to VdS 2031, it is advisable to use Type 1 SPDs for these buildings. A detailed application description can be found in brochure DS193.


No additional backup fuse is required if an installation is protected by backup fuses up to 160 A.

If applications are not sufficiently defined, it is advisable to use DEHNventil. Fulfilling the most stringent technical requirements, DEHNventil provides adequate protection at any time and is suitable for any application.

The energy coordinated arresters even allow to protect terminal equipment if the distance between DEHNshield and the consumers is ≤ 5 m.

Owing to their non-exhausting spark gap and low space requirements, the application-optimised combined lightning current and surge arresters can be easily integrated into distribution boards.

The follow-current-limiting spark gap technology ensures selectivity even in case of low-value fuses (35 A gL/gG), meaning that upstream fuses are not tripped by mains follow currents.

Busbars and pin-shaped terminals from DEHN + SOHNE can be used for connecting DEHNshield to other DIN rail mounted devices. The type designation of DEHNshield allows to easily choose the right arrester for the relevant system configuration of the low-voltage consumer?fs installation. The operating state/fault indication of every protective path immediately provides information on the operating state of the arrester even if no operating current is present.


Datasheet

Product DSH TNC 255 DSH TNS 255 DSH TT 255 DSH TN 255 DSH TT 2P 255
Part Number 941 300 941 400 941 310 941 200 941 110


Please note - Product designs and specifications are subject to change without notice. The user is responsible for determining the suitability of this product.

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Keison International Ltd. trading as:
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