Residual current device RCD310 basic RCD type A mounted on side

residual current device RCD310 Basic RCD type A side mounted rated resid. current 0.03...5A at 50/60Hz tv instantaneous 4-pole In=160A Ue=127-480V accessory for: 3VA1 with terminal connection nt-sensitive). 2. Easy mechanical installation of the residual current ammeters direct at the switch. This allows a very compact design.