Residual current device RCD820 advanced RCD type A mounted below

residual current device RCD820 advanced RCD type A load side mounted rated resid. current 0.03...30A at 50/60Hz adjustable tv 0...10000ms 4-pole In=400A Ue=100-690V accessory for: 3VA2 nt-sensitive). 2. Easy mechanical installation of the residual current ammeters direct at the switch. This allows a very compact design.