An assembly for engaging an electromagnetic actuator comprising a first shaft having a first link and a second shaft having a second link connected by a biasing assembly configured to rotate between an initial and a final position. A contact arm of the second shaft advances a sliding armature of the electromagnetic actuator from an activated state to a deactivated state such that the assembly prevents the electromagnetic actuator from returning to the activated state. The biasing assembly has a toggle-over position in which a biasing force rotates the contact arm from the toggle-over position to the final position.

A multidirectional operating device includes an operational knob including a knob body and plural ribs, and a bezel portion disposed around a rotational axis of the operational knob. The bezel portion includes plural limiting portions formed standing from a top surface side so as to limit the inclination operation of the operational knob by being opposite to a contact surface of the ribs when the operational knob is located at a neutral position, and plural permitting portions arranged between the limiting portions so as to permit the inclination operation of the operational knob while avoiding a contact with the contact surface of the ribs when the operational knob is located at an operational position that allows the inclination operation by being rotated from the neutral position to a right or left position.

A plug-in circuit breaker that includes a circuit breaker housing, and a locking mechanism, an unlocking mechanism, and a button mechanism all arranged inside the circuit breaker housing, and an operating mechanism connected to the button mechanism to drive the circuit breaker to switch on/switch off; the locking mechanism includes a first locking member with one end protruding outside the circuit breaker housing, and the circuit breaker housing comprises a locking member opening co-operated with the first locking member; the unlocking mechanism includes an independent pulling member drivingly co-operated with the first locking member, when the circuit breaker is in the switch-off state, one end of the first locking member protrudes outside the circuit breaker housing from the locking member opening, and pulling the pulling member enables the first locking member to retract into the inside of the circuit breaker housing.

A multi-pole switching device (1) for a busbar system includes a movable front cover (3), which is movably attached to the housing of the switching device and which locks at least one receiving unit (4) for receiving a component when the multi-pole switching device (1) is switched on.