An auxiliary switch includes a housing including a first housing part and a second housing part separate from and releasably connected to the first housing part. A printed circuit board is fixedly mounted within the housing and has an electrical pad and an electrical contact connected to the electrical pad. A terminal conductor is electrically connected to the printed circuit board. An actuator mechanism is mounted within the housing and has an electrical contactor engaged to the terminal conductor. The actuator mechanism is configured to move within the housing and at least partially displace the electrical contact while maintaining engagement between the contactor and the terminal conductor.

An exemplary apparatus includes a switch, an arm, and a rod. The switch is housed by a housing and includes an actuating tab. The arm is housed by the housing and carries an arm magnet. The arm magnet includes first and second opposed surfaces and an edge surface. The rod carries a float and a rod magnet. The rod is movable between a first rod position and a second rod position at which the rod magnet is in the housing. As the rod moves from the first position to the second position, the edge surface of the arm magnet is configured to move across a facing surface of the rod magnet, thereby moving the arm from a first arm position in which the arm does not actuate the actuating tab to a second arm position in which the arm actuates the actuating tab.

A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles or switches are described.

The present disclosure discloses a high-voltage DC relay with an auxiliary contact. The high-voltage DC relay includes a cover, a main contact leading-out terminal, a pushing rod assembly, a main movable contact piece, an auxiliary contact leading-out terminal and an auxiliary movable contact piece. The main contact leading-out terminal and the auxiliary contact leading-out terminal are respectively fixed on a top wall of the cover and their bottom ends respectively extend into a cavity of the cover. The main movable contact piece and the auxiliary movable contact piece are respectively matched with corresponding bottom ends of the main contact leading-out terminal and the auxiliary contact leading-out terminal. Two auxiliary contact leading-out terminals are arranged on both sides of a connecting line between two main contact leading-out terminals, and the auxiliary movable contact piece is also connected with a plastic body.

A hybrid circuit configuration, particularly a protection circuit configuration, includes: at least one first external conductor segment; a first mechanical bypass switch in the first external conductor segment; a first semiconductor switch configuration connected in parallel to the first bypass switch; a first electronic control unit for activating the first semiconductor switch configuration; and a bypass switch activation unit, to which bypass switch activation unit at least one field coil of the bypass switch is connected. At least one control terminal of the bypass switch activation unit is connected to the first electronic control unit. The electronic control unit and/or the bypass switch activation unit controls the at least one field coil of the bypass switch in a preconfigured way either with at least one first electric current or one second electric current, the one second electric current being greater than the at least one first electric current.

A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles or switches are described.

The electrical switching device comprises an outer enclosure, at least one housing for receiving a removable auxiliary block, the enclosure including a base and a cover, the cover being configured to cooperate with the base to close the outer enclosure. The cover includes signaling units movable between an inactive position and an active position, and control units configured to move the signaling units from the inactive position toward the active position during closing of the enclosure if at least one auxiliary block is present in a corresponding receiving housing.

A variety of active cover plate configurations with prongs configured to contact side screw terminals of electrical receptacles are described. In one illustrative embodiment, an active cover plate includes a multi-gang face plate configured to be installed over a multi-gang light switch installation, the multi-gang faceplate including at least two apertures sized to accept a manually manipulatable element of switches in the multi-gang light switch installation. Prongs extend rearward from the multi-gang faceplate around at least one of the apertures.

The present subject matter provides a relay, including an insulating cover, two static contact bridges, a moving contact bridge, a drive shaft and a driving mechanism; a conductive layer is provided on the inner surface of the top of the insulating cover; the relay comprises an auxiliary conduction structure and an auxiliary detection structure; the auxiliary conduction structure includes a conductive member and an elastic member that elastically supports the conductive member below; the conductive member is arranged on the drive shaft, the drive shaft moves up to drive the moving contact bridge to be conducted with the static contact bridges, and the conductive member is conducted with the conductive layer; the drive shaft moves down to drive the moving contact bridge to be disconnected from the static contact bridges, and the conductive member is disconnected from the conductive layer; the auxiliary detection structure comprises a first auxiliary terminal and a second auxiliary terminal; the first auxiliary terminal is electrically connected to the conductive layer; and the second auxiliary terminal is electrically connected to the conductive member.

A low-voltage switching device includes a base module, with a connection region for electrical conductors. Auxiliary contacts and a coil connection are arranged in a separate auxiliary module that is attachable to and detachable from the base module to maximize flexibility in configuration, manufacture, functionality and utility of the switching device while reducing production costs.