CFM1 series moulded case circuit breaker is a new type products developed and manufactured by adopting international advanced technology. it is supplied with rated insulation voltage 800V and used for circuit of AC 50HZ,rated operation voltage AC400V or below rated operation current up to to 800A for infrequent changing over and starting of the motors .equipment with the protection devices for over-current,short circuit and under voltage, the products is capable of preventing damage of circuits and supply units .the product conforms to IEC60947-2 standard.