The DEHNshield combined arrester, optimized for applications, utilizes spark-gap-based type 1 and type 2 technologies for lightning current and surge protection as per EN 61643-11. It features a compact design with space-saving spark gap technology and a width of only 1 module/pole. Designed for residential buildings and special applications, it safeguards low-voltage installations against surges, even in scenarios with direct lightning strikes. It is suitable for installation following the lightning protection zone concept at the boundaries from 0A – 2. Its specifications include a 50kA lightning impulse current (10/350), a maximum continuous AC voltage of 255V, a nominal AC voltage of 230V, and safety levels of 1.5kV for L-N, N-PE, and L-PE.
Specifications
System configuration DC : No
System configuration IT : No
System configuration TN : No
System configuration TN-C : No
System configuration TN-C-S : No
System configuration TN-S : Yes
System configuration TT : Yes
System configuration other : No
Number of poles : 4
Lightning impulse current (10/350 µs) (kA) : 50
Max. continuous voltage AC (V) : 255
Nominal voltage AC (V) : 230
Voltage protection level (kV) : 1.5
Voltage protection level L-N (kV) : 1.5
Voltage protection level N-PE (kV) : 1.5
Follow current extinguishing capability (kA) : 25
Specific energy (W/R) (kJ/Ohm) : 625
Max. overcurrent protection device, parallel connection (fuse) (A) : 160
Max. overcurrent protection device, series connection (fuse) (A) : 100
Mounting method : DIN rail (top hat rail) 35 mm
Construction size : 4 modular spacing
Max. conductor cross section solid (solid, stranded) (mm²) : 35
Max. conductor cross section flexible (fine-strand) (mm²) : 25
Remote signalling : No
Signalling at the device : Optic
Test class : Type 1 + 2
Integrated backup fuse : No
Energy-coordinated protection effect with regard to the terminal equipment : Yes
Voltage switching spark gap technology : Yes
Overcurrent protected voltage tapping : No
Degree of protection (IP) : IP20
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