Device, circuit, system, and method for arc suppression. A contact separation detector is configured to output an indication of a separation state of a pair of electrical contacts. A contact bypass circuit, coupled to the contact separation detector, is configured to provide an electrical bypass between the pair of contacts based on the indication.

An electrical power contactor including a local electrical ground plane configured to be electrically connected to a reference potential 0Vdc of an electrical power supply of the power contactor. Current returns from at least one coil and from at least one auxiliary contact of the electrical power contactor are formed by a common conductor that is connected to the local electrical ground plane. A current return from a controller of the electrical power contactor is also connected to the local electrical ground plane.

An apparatus includes: a high-voltage module including: a current interrupter; an actuation system coupled to the current interrupter; a sensor system; and a terminal configured to electrically connect to an external electrical device. The apparatus also includes: a user interface; and an electrically insulating assembly between the user interface and the high-voltage module. In operational use, the user interface is grounded and the high-voltage module is at a system voltage.

A wireless smart switch, comprising: an actuator, a circuit assembly, comprising at least a controller, a battery, and a transceiver, the controller being powered by the battery and being programmed to send one or more command signals via the transceiver, according to a user input from the actuator; a back-body, the back-body having a rear surface adapted to be mounted to a surface of a wall or to a wall box; and a ground wire, the ground wire being seated within a recess defined within the rear surface of back-body, the ground wire having a fixed end and a free end such that the free end can be drawn away from the back body and connected to a ground wire within a wall box.

A quick connect generator cable for coupling a generator to a main breaker panel for selectively supplying power to a plurality of circuit breakers in the panel for powering multiple loads found in residential or commercial buildings. The quick connect generator cable includes a power cable having a male connector for connection to a generator, and a switch housing for enclosing at least one breaker switch to selectively control power from the generator, a neutral and ground cable extending from the housing to electrically couple the generator to the main breaker panel, and power wires extending from the switch housing for powering the main breaker panel.

An apparatus includes: a high-voltage module including: a current interrupter; an actuation system coupled to the current interrupter; a sensor system; and a terminal configured to electrically connect to an external electrical device. The apparatus also includes: a user interface; and an electrically insulating assembly between the user interface and the high-voltage module. In operational use, the user interface is grounded and the high-voltage module is at a system voltage.

An arrangement has an electrical device with two or more electrical contact points. A fluid-based reference potential connecting device is suitable for connecting the electrical contact points to a reference potential. The fluid-based reference potential connecting device has an annular fluid line which connects the contact points in series, and, when a fluid flows through the fluid line, the fluid successively wets the contact points, starting from a starting point, contact point by contact point, along a predefined flow direction.

A fixing module is for fixing a push button or emergency stop button or rotary actuator of a control and signaling device. In an embodiment, the fixing module is constructed from a top housing part and a bottom housing part, each including a cuboidal structure with a top side, an underside and four side parts connecting the top side to the underside. In at least one embodiment, on the top side of the bottom housing part, a material that extends at least partially in this plane and has a grounding function is formed or an electrically conductive component made of metal with a grounding function is arranged.

An electrical power contactor including a local electrical ground plane configured to be electrically connected to a reference potential OVdc of an electrical power supply of the power contactor. Current returns from at least one coil and from at least one auxiliary contact of the electrical power contactor are formed by a common conductor that is connected to the local electrical ground plane. A current return from a controller of the electrical power contactor is also connected to the local electrical ground plane.

An arrangement has an electrical device with two or more electrical contact points. A fluid-based reference potential connecting device is suitable for connecting the electrical contact points to a reference potential. The fluid-based reference potential connecting device has an annular fluid line which connects the contact points in series, and, when a fluid flows through the fluid line, the fluid successively wets the contact points, starting from a starting point, contact point by contact point, along a predefined flow direction.