An improved solenoid having an enhanced magnetic field and failsafe operation is provided, wherein a primary winding and a secondary winding are constructed such that the combined force imparted on a plunger by both windings energized together is greater than the sum of the forces imparted by the primary and secondary windings energized separately, resulting in a smaller solenoid capable of providing a predetermined force, and providing a solenoid capable of tripping a circuit interrupting latch even if one of the windings is broken.

A circuit breaker includes contacts movable between a closed position wherein a line terminal and a load terminal are in electrical communication, and an open position wherein the line and the load terminals are electrically isolated. A primary trip coil and a secondary trip coil are connected to the contacts, each causing the contacts to move from the closed position to the open position when activated, thereby tripping the breaker. A monitoring circuit, upon a determination being made that the breaker is not operating within acceptable trip parameters, causes activation of the primary coil, and, upon a determination being made that the breaker is not operating within acceptable disable parameters, causes activation of the secondary coil. The breaker is user resettable if the breaker has been tripped by the primary trip coil, but is not user resettable if the breaker has been tripped by the secondary trip coil.

A wiring device including a fault detection circuit, an actuating device, a first switching device, a second switching device, and a third switching device. The fault detection circuit is configured to detect one or more fault conditions and generate a trigger signal. The first switching device is activated to turn on when said trigger signal is received from said fault detection circuit. The second switching device includes a first pin, a second pin, and a third pin, said second switching device is electrically connected to a first conductive winding of the actuating device and said first switching device. The third switching device includes a first pin, a second pin, and a third pin, said third switching device is electrically connected to a second conductive winding of the actuating device and said first switching device.

A wiring device including a fault detection circuit, an actuating device, a first switching device, a second switching device, and a third switching device. The fault detection circuit is configured to detect one or more fault conditions and generate a trigger signal. The first switching device is activated to turn on when said trigger signal is received from said fault detection circuit. The second switching device includes a first pin, a second pin, and a third pin, said second switching device is electrically connected to a first conductive winding of the actuating device and said first switching device. The third switching device includes a first pin, a second pin, and a third pin, said third switching device is electrically connected to a second conductive winding of the actuating device and said first switching device.

A button and electronic device, including shell and motor connected to the shell, the motor includes base and magnetic circuit, accommodating space is formed in the base, at least part of the magnetic circuit is accommodated in the accommodating space. The magnetic circuit at least includes magnetic conductive cover plate, voice coil and iron core, the magnetic conductive cover plate is fixedly connected to the shell and movably connected to the base. The voice coil and the iron core are accommodated in the accommodating space and are fixedly connected to the base, the voice coil is sleeved on the iron core, preset gap is formed between the iron core and the magnetic conductive cover plate. The voice coil and the iron core drive the magnetic conductive cover plate to drive the shell to move. The button can achieve feedback function to the user, thereby improving accuracy of user operation.

A circuit interrupting device having a dual-coil solenoid for delivering an increased magnetic field to the solenoid plunger when a fault is detected and it is desired to place the device into a tripped condition. Independent switching devices control the flow of current through the respective coils of the solenoid and a third switching device controls the operation of the two coil driving switch devices. A detection circuit detects faults and controls the third switching device to activate the coil driving switching devices when a fault is detected. A programmable device runs a self-test program to determine whether the device is operating properly and faults can be detected. The programmable device can also independently control the operation of the two coil driving switching devices.

The present disclosure relates to an arc extinguishing assembly, including side members which are spaced apart by a certain distance and disposed to face each other; an exhaust which is installed on an upper part of the side member; a plurality of grids which are installed between the side members and having both ends fixed to each of the side members; an arc guide having one end coupled to the side member and installed under the plurality of grids; and a magnet which is installed such that both ends are respectively coupled to the side members under the plurality of grids, and forms an electromagnetic force in a direction toward the grid, and a circuit breaker including the same.

A rotary Thomson coil actuator for use in a multi-pole circuit interrupter is provided and includes: an insulating cylinder, a plurality of pole assemblies, and a number of Thomson coil arrangements. Each pole assembly includes two stationary conductors and one rotating conductive arm. Each stationary conductor includes a stationary contact. The rotating conductive arm is fixedly coupled to the insulating cylinder and includes two movable contacts, with each movable contact corresponding to one of the stationary contacts. Each Thomson coil arrangement includes a conductive plate, a first Thomson coil, and a second Thomson coil. The conductive plate is fixedly coupled to the insulating cylinder, and the two Thomson coils face opposing sides of the conductive plate. The opposing orientations of the two Thomson coils relative to the conductive plate results in the repulsion force exerted by each of the two coils on the conductive plate being additive.