Specifications 1.Om1 circuit breaker 2.Used for circuit of a.C. 50hz 3.Rated operating voltage ac 400v 4.Iec60947-2 standard Om1 moulded case circuit breaker (mccb) Application: Om1 series moulded case circuit breaker is one of products developed and manufactured by adopting international advanced technology. It is supplied with rated insulating voltage 800vand used for circuit of a.C. 50hz, rated operating voltage ac 400v (or below), rated operating current up to 800a for infrequent changing over and starting of the motors.The products con-forms to iec60947-2 standard. Ccc, ce, sgs.Ul