LOVATO Electric GmbH
Residual Current Devices (RCD) by LOVATO Electric GmbH
These RCCBs are intended for the protection of peopleagainst indirect contact (electric shock) and of installationsagainst fire hazards due to a persistent earth/ground faultcurrent.
Specifically to prevent electric shock, RCCBs mustbe rated with a rated residual current (IΔn) not exceeding30mA so that these devices trip in the case of earth/groundfault only.
They usually are connected in series with thermal-magnetic breakers which assure short circuit and overcurrentprotection too.