Havells Single Pole 16A RCBO-DHCEACSN2030016 also works as an MCB (Minature or Mains Circuit Breaker). In this operation it is designed to interrupt a current overload in a circuit. RCBOs are rated both by the normal current that are expected to carry, and the maximum short-circuit current that they can safely interrupt. A short circuit is an abnormal low-resistance connection between two nodes of an electrical circuit that are meant to be at different voltages (In accordance with IS 12640-2 and IEC 61009-1) 240/415V, 50Hz, with 10 kA short circuit capacity