This product series works to step down three-phase AC power supply by transformer and then achieve DC 220V voltage through bridge commutating apparatus.The unit consists of auto air switch.transformer,two-phase or three-phase bridge rectifier assembly and AC contactor. The circuit configures short -circuit and over voltage protection devices.A rectiformer will be attached outside under handling capacity of electromagnet more than 19KW, while using single phase bridge commutating mode under handling capacity of electromagnet less than or equal to 4KW.

Model designation

C for room inside;
D for room outside

With discharge circuit

Rated output power

With controlled circuit loop

Q for 3-phase,380V;
M for single phase,380V

diode commutation mode