For main switchboards when external lightning protection if fitted to the building. Class I lightning current arrestor with built in backup fuse protection up to 100kA RMS withstand and 25kA 10/350usec impulse rating.
Features of DEHN Power Supplies:
- Category C3, C2 & C1 protection Acc. A51768.
- Class I or T1 protection Imax Acc. = IEC61643-1.
- Iimp = 25kA 10/350 µsec (250kA 8/20 µsec Acc. A51768).
- Space saving, bolt straight onto earth bar.
- No backup fuse required.
- 1 per phase required.