An electrical switchgear for fast limitation and interruption of fault currents includes a fixed electrode, a movable electrode having a contact portion and a repelling portion, a plurality of contact fingers, and a coil. The coil is arranged adjacent to the repelling portion to induce eddy currents therein, the coil and the fixed electrode being arranged on the same side of the movable electrode, and the repelling portion being movable relative to the coil. The coil has a first dimension between two of its opposite lateral ends and defines an area which corresponds to a majority of a surface area of the repelling portion. The repelling portion provides a continuous current path, having a dimension corresponding to the first dimension, for eddy currents induced by the coil, whereby the movable electrode is pivotally thrown in a direction away from the coil and the fixed electrode, thus providing a circuit trip.

An electrical switchgear for fast limitation and interruption of fault currents includes a fixed electrode, a movable electrode having a contact portion and a repelling portion, a plurality of contact fingers, and a coil. The coil is arranged adjacent to the repelling portion to induce eddy currents therein, the coil and the fixed electrode being arranged on the same side of the movable electrode, and the repelling portion being movable relative to the coil. The coil has a first dimension between two of its opposite lateral ends and defines an area which corresponds to a majority of a surface area of the repelling portion. The repelling portion provides a continuous current path, having a dimension corresponding to the first dimension, for eddy currents induced by the coil, whereby the movable electrode is pivotally thrown in a direction away from the coil and the fixed electrode, thus providing a circuit trip.

An electrical switchgear for fast limitation and interruption of fault currents. The electrical switchgear which includes a plurality of contact fingers arranged to divide current flowing through the electrical switchgear.

A moving contact mechanism with a contact support that rotates around a third axis, a moving contact pivotable around a contact axis, and both ends of the contact spring are a third end of the spring and a fourth end of the spring, respectively, which are rotatably connected to the moving contact and the contact support respectively. A geometric axis of the contact spring is a second axis line located on one side of the third axis when the moving contact is normally on or off. The contact spring keeps the moving contact in an on or off state. The moving contact rotates relative to the contact support when repelled, drives the contact spring to rotate around the fourth end of the spring, so that the second axis line swings to the other side of the third axis, and remains in a temporary breaking position.

An actuator is disposed on a face of a circuit breaker panel positioned at a switch lever of a circuit breaker for moving the switch lever. A shaft selectively moves between an extended position and a retracted positon. An arm extends substantially perpendicular to the shaft. A manually disconnectable coupling is between the shaft and the arm. The arm is configured to fit on the face in a position to automatically move the switch lever into an electrically open positon from an electrically closed position upon activation of the actuator. The manually disconnectable coupling disconnects the shaft from the arm before a user manually moves the switch lever back into the electrically closed position. The manually disconnectable coupling has a manually removable pin. The actuator is a liner actuator and can be a rotational actuator.

An actuator is disposed on a face of a circuit breaker panel positioned at a switch lever of a circuit breaker for moving the switch lever. A shaft selectively moves between an extended position and a retracted positon. An arm extends substantially perpendicular to the shaft. A manually disconnectable coupling is between the shaft and the arm. The arm is configured to fit on the face in a position to automatically move the switch lever into an electrically open positon from an electrically closed position upon activation of the actuator. The manually disconnectable coupling disconnects the shaft from the arm before a user manually moves the switch lever back into the electrically closed position. The manually disconnectable coupling has a manually removable pin. The actuator is a liner actuator and can be a rotational actuator.