An electrical protection device, including a switching mechanism configured to switch between a set configuration and a tripped configuration, and a slide movable between a set position and a disengaged position. The electrical protection device further includes a resetting hook kinematically linked to a switching lever, and the slide supports a slide hook. When the slide is in the disengaged position, the resetting hook and the slide hook are ready to be engaged, and when the slide is in the set position, the slide hook and the resetting hook are spaced apart from each other and resetting of the electrical protection device results in engagement of the slide hook and the resetting hook and in a displacement of the slide.

A ground fault circuit interrupter (GFCI) can include a current transformer (CT) comprising a single core, a first winding wound around the single core, and a second winding wound around the single core. The GFCI can include a ground fault (GF) detection module operatively connected to the first winding to receive signals from the first winding and configured to determine whether a line-to-ground fault exists. The GFCI can also include a GN stimulus operatively connected to the second winding to provide a GN stimulus signal to the second winding. The GFCI can also include a grounded neutral (GN) detection module operatively connected to second winding and configured to receive signals from the second winding to determine whether a neutral-to-ground fault exists.

A circuit for a circuit interrupter is provided. The circuit may in include a first SCR configured to receive a first trigger signal at a gate of the first SCR, a second SCR configured to receive a second trigger signal at a gate of the second SCR, and a third SCR configured to receive a third trigger signal at a gate of the third SCR. A cathode of the first SCR may be connected to an anode of the third SCR. A cathode of the second SCR and a cathode of the third SCR may be connected to a ground. Methods of operating a circuit interrupter and a circuit are also provided.

A device may include a housing including a face plate. A device may include a plurality of sensing cores each configured to receive a current flow through a center cavity, the current flow defining a current flow direction through the center cavity, wherein the current flow direction is parallel to the face plate.

A connector for use with a GFCI receptacle is provided. The connector includes a body, a latch configured to couple the body to the GFCI receptacle, a first blade supported by and extending from the body, a second blade supported by and extending from the body, wherein when the body is coupled to the GFCI receptacle, the first blade is received by a first mating terminal of the GFCI receptacle and the second blade is received by a second mating terminal of the GFCI receptacle to electrically couple the receptacle to a downstream device.

A circuit breaker protecting an electric low-voltage circuit includes a housing with grid-side and load-side connections and a series circuit of a mechanical isolating contact unit on the grid side and an electronic interruption unit on the load side. The mechanical isolating contact unit has a handle opening and closing contacts. A current sensor unit is disposed in a conductor between the isolating contact unit and the interruption unit, for ascertaining a current level of the low-voltage circuit. A control unit is connected to the current sensor unit, electronic interruption unit, and mechanical isolating contact unit. When current and/or current/time thresholds are exceeded, prevention of a current flow in the low-voltage circuit is initiated. A power supply unit supplying energy to the circuit breaker is connected to conductors of the low-voltage circuit between the isolating contact unit and the interruption unit.

A connector for a circuit breaker and a downstream contactor has a one-piece configuration and facilitates an electrical connection between the circuit breaker and the downstream contactor. The connector includes at least one sensor, the connector includes an evaluation unit for measured values of the sensor, and the connector includes first contacts for the circuit breaker and second contacts for the downstream contactor, both acting in the same mating direction. A feeder for connecting a load and an arrangement having a distribution system, a load and a feeder, are also provided.

A connector for a circuit breaker and a downstream contactor has a one-piece configuration and facilitates an electrical connection between the circuit breaker and the downstream contactor. The connector includes at least one sensor, the connector includes an evaluation unit for measured values of the sensor, and the connector includes first contacts for the circuit breaker and second contacts for the downstream contactor, both acting in the same mating direction. A feeder for connecting a load and an arrangement having a distribution system, a load and a feeder, are also provided.

A circuit for a circuit interrupter is provided. The circuit may in include a first SCR configured to receive a first trigger signal at a gate of the first SCR, a second SCR configured to receive a second trigger signal at a gate of the second SCR, and a third SCR configured to receive a third trigger signal at a gate of the third SCR. A cathode of the first SCR may be connected to an anode of the third SCR. A cathode of the second SCR and a cathode of the third SCR may be connected to a ground. Methods of operating a circuit interrupter and a circuit are also provided.

This protection device (300) comprises at least two conduction paths (303) and cut-off means (310) arranged on each of the conduction paths. The device comprises a microcontroller (320), which is configured to measure a differential current in the conduction paths with detection means (312), to evaluate a differential fault and to send a trip signal to the cut-off means when a differential fault of the first type is detected. The protection device (300) also includes a test loop (360), which is different from the detection means. The microcontroller (320) is configured to inject, into the conduction paths by means of the test loop, a first test signal representative of the electrical fault of the first type and, together with detection means, to measure the first test signal thus injected into the conduction paths.