DF11Z special locomotive rectification power supply

The utility model relates to a rectification power supply's technical field especially relates to a DF11Z special locomotive rectification power supply. Including an ac contactor KM, change over switch ZLW's 6 extreme points are connected to an ac contactor KM's coil one end, and button SB2's one end is connected to an ac contactor KM's the coil other end, and button SB1's one end is connected to button SB2's the other end, and change over switch ZLW's 2 ends are connected to button SB1's the other end, realize KM coil, button SB2 and button SB1's series connection, the control circuit part, through the series connection of button SB1, SB2, KM coil, SB1 contact and ac contactor KM auxiliary contact's parallel connection forms the auto -lock return circuit of contactor KM coil, realize the power the start -up, stop the function. The utility model discloses simple structure can pass through reasonable layout in the stable performance, be used for the limited cabinet of the inner space body effectively.