This BG Fortress 6A 30mA Compact B Curve Type A Single pole RCBO is for protection from short circuit, overload and earth leakage faults. It is designed for use with BG Fortress consumer units and features positive contact status indication. The RCBO has a B curve and is capable of being locked in the 'ON' or 'OFF' position using a device lock. It is the size of an MCB, DIN rail mountable, and has a 6kA breaking capacity. It also includes an integrated blue neutral lead and a manual test button.