Hydraulic-Magnetic circuit breakers are used when short circuit and overload protection by a hydraulic magnetic release. These circuit breakers can also be made to compensate for transient conditions such as the motor inrush currents, to avoid nuisance tripping. It can handle from DC 0.5A~400A and AC 0.5A~200A，with the temperature -40℃+85℃. The main function is that not only provide precise protection and a variety of delays supported, but also flexible installation and wiring methods.