RDX2-125 Moulded case circuit breaker is one current-limit type MCCB of with over-load and short-circuit double protection. Circuit breaker is suitable for the circuit of AC 50Hz or 60Hz, rated operating voltage up to 230V/400V, rated current up to 125A, as the use of over-load, short-circuit protection of circuit, and it also can be used as infrequently connecting and breaking the electric device and lighting circuit.