Electromagnetic switch

An electromagnetic switch, comprising:

• a housing;
• a jump mechanism, movably arranged on the housing;
• a trip mechanism, arranged on the housing and opposite to the jump mechanism, adapted to move relative to the housing, and comprising a bridge plate located on a moving path of the jump mechanism and having multiple locked states, unlocked states, and critical states when shifting from the locked state to the unlocked state;
• the jump mechanism is adapted to abut against the bridge plate when moving downward, push the bridge plate to move to the locked state, store energy by continuing moving to drive the trip mechanism to move to the critical state, and cause the jump mechanism to jump to connect a circuit with the energy stored in the unlocked state,
• wherein the jump mechanism comprises a jump body, a push rod fixedly arranged on the jump body, and a jump lever connected with the jump body through a jump biasing member,
• the trip mechanism further comprises a first trip frame located on a moving path of the push rod, the bridge plate is arranged on a moving path of the jump lever, and the bridge plate is in a first locked state when the first trip frame abuts against the bridge plate,
• the jump lever is adapted to abut against the bridge plate and push the bridge plate to move to the first locked state when the jump mechanism moves downward,
• the push rod is adapted to drive the first trip frame to move via continuing movement of the jump mechanism, and
• the jump biasing member is adapted to store energy during movement to the critical state, and cause the jump lever to jump to connect the circuit with the energy stored in the unlocked state.