A fusible switch disconnect device includes a housing adapted to receive at least one fuse therein, and a switchable contact for connecting the fuse to circuitry. A tripping mechanism and control circuitry are provided to move the switchable contact to an open position in response to a predetermined electrical condition.

A fusible switch disconnect device includes a housing adapted to receive at least one fuse therein, and a switchable contact for connecting the fuse to circuitry. A tripping mechanism and control circuitry are provided to move the switchable contact to an open position in response to a predetermined electrical condition.

Provided is a rotary maintenance type leakage protector which relates to a technical field of leakage protectors, and the rotary maintenance type leakage protector includes: a base, a leakage protection device, and an upper cover. The leakage protection device includes a reset key, a return rotation stopper, an electromagnetic driven device and an elastic piece, wherein the base is further provided with a conducting terminal that can be electrically connected with the elastic piece; each side of the return rotation stopper is provided with a protruding end that can be abutted against the elastic piece; the electromagnetic driven device is disposed on a side of an upper part of the base, and the electromagnetic driven device is provided with a driven iron core and can drive the driven iron core to move.

A trip apparatus has a power terminal, an actuator, a rectifier coupled to the power terminal, a selector, and a processor, the actuator having a pusher member and a coil, the pusher member movable between a first position that does not actuate an actuator interface of a connected circuit breaker and a second position that actuates the actuator interface. The processor has a first input, a second input, and an output, the first input of the processor is coupled to the output of the rectifier, the second input of the processor coupled to an output of the selector, and the output of the processor coupled to the actuator. The processor determines a threshold based on a select signal received at the second input of the processor, and compares a voltage at the first input of the processor to the threshold. The processor controls the coil to selectively control the pusher member in the first or second position based on the comparison of the voltage at the first input of the processor to the threshold.

Provided is a rotary maintenance type leakage protector which relates to a technical field of leakage protectors, and the rotary maintenance type leakage protector includes: a base, a leakage protection device, and an upper cover. The leakage protection device includes a reset key, a return rotation stopper, an electromagnetic driven device and an elastic piece, wherein the base is further provided with a conducting terminal that can be electrically connected with the elastic piece; each side of the return rotation stopper is provided with a protruding end that can be abutted against the elastic piece; the electromagnetic driven device is disposed on a side of an upper part of the base, and the electromagnetic driven device is provided with a driven iron core and can drive the driven iron core to move.

An exemplary mechanically operated switching device includes at least one movable contact and an operating mechanism for coupling/separating the movable contact to/from a corresponding fixed contact. The operating mechanism includes first elastic mechanism for, upon release, providing the energy to separate the movable and fixed contacts. At least one shunt release having: a member movable between first and second stable positions, wherein movement from the first stable position to the second stable position releases the first elastic mechanism; at least a permanent magnet generating a force for holding the movable member in the first stable position, wherein the movable member held in the first stable position compresses a second elastic mechanism; and at least one electrical winding associated with the movable member and the electronic mechanism, which is configured to electrically drive the winding to generate a magnetic force that releases of the compressed second elastic mechanism.

A circuit breaker having a movable contact arm for opening and closing the circuit which is controlled separately by a circuit breaker mechanism for circuit protection and by a switch lever mechanism which does not require actuation of the circuit breaker mechanism to function. The switch lever may be activated by a solenoid or other suitable means, and various interlocking mechanical states exist among the elements that provide added safety features.

A protective device including: a plurality of line terminals and a plurality of load terminals a circuit interrupter including a solenoid and a set of interrupting contacts that connect at least one line terminal and at least one load terminal in a reset state and disconnect the at least one line terminal and the at least one load terminal in a tripped state; a voltage detection element configured to detect voltage across the plurality of line terminals and generate a line voltage rejection signal when greater than a predetermined overvoltage; a reset assembly including a reset button and a reset switch operatively coupled to the reset button; and a reset prevention mechanism configured to prevent the circuit interrupter from entering the reset state when the reset signal is absent.

A fusible switch disconnect device includes a housing adapted to receive at least one fuse therein, and a switchable contact for connecting the fuse to circuitry. A tripping mechanism and control circuitry are provided to move the switchable contact to an open position in response to a predetermined electrical condition.

A fusible switch disconnect device includes a housing adapted to receive at least one fuse therein, and a switchable contact for connecting the fuse to circuitry. A tripping mechanism and control circuitry are provided to move the switchable contact to an open position in response to a predetermined electrical condition.