Emergent pump electric device that opens of fire -fighting water pump machinery

The utility model discloses an emergent pump electric device that opens of fire -fighting water pump machinery, including the main water pump motor, conventional major loop circuit to and conventional control circuit circuit, conventional major loop circuit includes a first contactor and an electrothermal relay, first contactor input is connected with the power, and an output and an electrothermal relay input link to each other, isolation transformer's once side input still includes isolation transformer, is connected with the power that conventional control circuit circuit is connected with isolation transformer secondary side output after concatenating switch, still including emergent major loop circuit, emergent major loop circuit includes the first emergent circuit breaker that starts, the first emergent circuit breaker that starts, it is equipped with twist grip and the normally closed auxiliary contact who takes the safety key lock, and its input is connected with the power, and its output is connected