The electromagnetic relay comprises an auxiliary fixed terminal that has a configuration different from that of a fixed terminal and includes an auxiliary external input/output terminal and an auxiliary external output/input terminal that can be electrically connected to the auxiliary external input/output terminal. The electromagnetic relay comprises an auxiliary movable terminal that has a configuration different from that of a movable terminal and can electrically connect the auxiliary external input/output terminal and the auxiliary external output/input terminal.

An overload relay is disclosed in which a single operator coil is controlled for both tripping and resetting. A permanent magnet and a spring make the device bi-stable, so the coil may be unpowered when in the trip and reset states. Energization of the coil overcomes the magnet to allow tripping, while energization in an opposite direction adds to the magnet force to reset the device. An electromagnetic activation path overrides a mechanical activation path for electromagnetic tripping despite attempted manual resetting. The device may be pulse width modulated to reduce power consumption

An electromagnetic relay includes: a housing including a base and a case that opens downward and is provided on the base, the housing having an internal space surrounded by the base and the case; a main fixed contact; a main moving contact that comes into contact with and separates from the main fixed contact; an auxiliary fixed contact; an auxiliary moving contact that comes into contact with and separates from the auxiliary fixed contact; a coil provided in the housing such that a central axis extends in a vertical direction; an iron core disposed so as to be surrounded by the coil; a yoke disposed around the coil; an armature that is disposed to face an upper end of the iron core and swings in response to excitation/non-excitation of the coil; a movable part provided with the main moving contact and configured to move in response to swinging of the armature; and a partition wall that divides the internal space of the housing into a first space and a second space. The main fixed contact and the main moving contact are disposed in the first space, and the auxiliary fixed contact and the auxiliary moving contact are disposed in the second space.

The contactor rotary connector is provided with a first connector having a first terminal supported by a first mold; and a second connector having a second terminal supported by a second mold. The first connector is provided with a first space block. The second connector is provided with a second space block; a fixed component capable of holding the first mold and the second mold in a coupled state by being rotatably housed in the first space block and the second space block; a contactor capable of contacting the first terminal and the second terminal; and a rotating shaft that integrally couples the contactor and the fixed component, is rotatably supported by one of the first mold and the second mold, and is capable of connecting the first terminal and the second terminal by rotating the contactor.

Disclosed is a wall-mounted device, which is mainly provided with a base and a cover plate, and the at least one module circuit board is provided in the cover plate. The power terminal of at least one module circuit board is electrically connected to an exterior live wire circuit of the base, so the interior live wire circuit is able to independently supply power to the module circuit board of the cover plate. As the result, the base is able to fit or replace with any cover plate provided with module circuit board, and connects to any electronic device or network to remotely control and operate.

A surface mount snap switch and method of making the same, including a housing having a plurality of channels formed therein and a cover configured for snap-fit engagement with the housing. The snap switch also includes an actuator slidably disposed at least partially within the housing, a first terminal having an external surface mount portion and another portion press-fittingly held within one of the plurality of channels of the housing, and a second terminal having an external surface mount portion and another portion press-fittingly held within another one of the plurality of channels of the housing. The snap switch further includes a blade contact having a first end portion pivotally associated with the first terminal and a second end portion comprising a blade contact button, and the actuator is configured to interact with the blade contact to electrically couple the first terminal and the second terminal.

Examples relate to a compressible housing. An electronic switch may include a circuit board. A first conductive surface may be coupled to the circuit board and a second conductive surface may be located proximate to the first conductive surface. A compressible spacer may be located between the first conductive surface and the second conductive surface to space the first conductive surface away from the second conductive surface. Further, a compressible housing may deform when under compression and may cause, via deformation of the compressible spacer, the first conductive surface to contact the second conductive surface.

A universal circuit board compatible for a mechanical keyswitch and an optical keyswitch includes a main body, a plurality of conductive terminals and an opening structure. The main body has a first surface and a second surface opposite to each other. The plurality of conductive terminals is disposed on the first surface of the main body. The opening structure is formed on the main body and pierces through the first surface and the second surface. The opening structure can be inserted by an axle body of the mechanical keyswitch or be an optical transmission channel of the optical keyswitch.

A modular auxiliary switch includes a housing including a first housing part and a separate second housing part secured to the first housing part. A printed circuit board is housed in one of the first and second housing parts, and has a first side facing the first housing part and a second opposite side facing the second housing part. An actuator mechanism is housed in the first housing part and is coupled to the printed circuit board. A separate first electrical contactor is selectively mounted to the printed circuit board so that a first electrical contact surface of the first electrical contactor overlaps and is in direct contact with one of the first side and the second side to define a first electrical contact pad on the printed circuit board.

This switching element for an electrical energy distribution board comprises a distribution bar (13) and a support plate (14) on which the distribution bar is fixed. The switching element comprises a coil, a contact movable under the action of the coil, said contact being mounted movably in a chamber (20). Said chamber comprises two parts (21, 22) intended to be mounted on the distribution board (P) in such a way that the movable contact (17) acts on said bar, said chamber (20) being furnished with means of fixing to the distribution bar (13) or to the plate (14), the contactor being an irremovable contactor fixed by said chamber (20) onto the distribution board (P).