A switching device, for the on-off switching of a current passing through a current path, has at least one fixed contact and at least one movable contact, wherein the movable contact can be moved relative to the fixed contact for making or breaking the current path, and a drive for the functional movement of a jumper between a contact-making position and a contact-breaking position. In the contact-making position with the fixed contact, the movable contact makes the current path. The switching device includes a high-speed circuit breaker for breaking the current path in the event of a short circuit or overload, wherein the armature of the high-speed circuit breaker is rigidly coupled to the movable contact.

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 circuit breaker having a movable contact arm for opening and closing the circuit which is controlled separately by a circuit breaker mechanism for circuit protection and by a switch lever mechanism which does not require actuation of the circuit breaker mechanism to function. The switch lever may be activated by a solenoid or other suitable means, and various interlocking mechanical states exist among the elements that provide added safety features.

A switching device has a first switching path having first switching contacts and has a second switching path having second switching contacts, wherein the first switching path has a first electromagnetic tripping apparatus having a first coil winding, wherein the first coil winding has a first winding direction, wherein the second switching path has a second electromagnetic tripping apparatus having a second coil winding, and wherein the second coil winding has a second winding direction. The first switching contacts and the second switching contacts are coupled for substantially simultaneous actuation. The first switching path and the second switching path are arranged adjacent to each other in the switching device. The first winding direction is opposite the second winding direction.

A circuit breaker includes a housing, a fixed contact mounted in the housing, a pivot member arranged in the housing, and a pivoting arm moveably mounted in the housing. The pivoting arm includes a moveable contact. The pivoting arm is rotatable about and translatable relative to the pivot member to selectively engage and disengage the fixed and moveable contacts.

A force amplification module is disclosed for an electrical switching device, in particular a circuit-breaker, that is designed to amplify the release force of a shunt release which is designed to switch off the electrical switching device. A unit including a shunt release and the force amplification module for an electrical switching device is also disclosed, as well as an electrical switching device.

An electromagnetic actuator including a magnetic housing, a coil that is rigidly connected to the housing and is capable of being connected to an electric circuit, a magnetic core that is arranged in the coil and can move along a central axis defined by the coil and according to the strength or the current flowing in the coil, and a shunt that is arranged in the coil and includes a magnetocaloric material the magnetisation of which is temperature-dependent. The shunt is arranged is the coil along the central axis along a length so as to create an air gap between the shunt and the magnetic core. The actuator further includes a device for attaching the shunt to the housing that are designed to adjust said the length.

Disclosed herein is a computer-implemented method to assist a user in interacting with an electronic relay for electric power distribution grids. The method provides for identifying light signals emitted by one or more user-interface components of the user-interface panel of the electronic relay by processing images of said user-interface panel, which have been captured by the camera of a mobile computerized device. The method further provides for showing information, which describes the identified light signals emitted by said user-interface components on the display of said mobile computerized device.

In one example, a hybrid circuit interrupter may include a three-coil architecture, first coil circuitry, leakage detection circuitry, and a main processing circuit including a processor. The three-coil architecture may include a coil housing, three coils, and a plurality of coil assembly conductors. The coils may be disposed within the coil housing. The coil assembly conductors may be at least partially disposed within the coil housing. The first coil circuitry may be connected to the first coil and may generate first coil signals. The leakage detection circuitry may be connected to the other two coils and may generate a leakage signal. The processor may receive the first coil signals, receive the leakage signal, determine whether an arc fault exists based on the first coil signals, determine whether a ground fault exists based on the leakage signal, and generate a first trigger signal if a fault is determined to exist.

A power circuit breaker has a housing defining a first passage and a cross passage through the housing. A bus bar extends through the cross passage and is configured to transmit electric power and/or break transmission of the electric power through the housing. The bus bar includes at least an input section, a coin or center section, and an output section that are separable from each other. The housing aligns a solenoid piston within the first passage of the housing. The solenoid has a piston with two opposite ends, and one of the ends operates as a plunger to separate the sections of the bus bar when the solenoid is actuated. The plunger moves the coin or center section of the bus bar out of contact with the input section and the output section of the bus bar to break electrical transmission across the bus bar.