A switching device includes a shell delimiting a plurality of spaces each able to accommodate a trip including a tripping device, a switching device, and a control mechanism including a device for grasping that can be moved between a first position and a second position by an operator in order to control movement of the switching device between an open position and a closed position. The switching device is in the closed position when the device for grasping is in the first position and in the open position when the device for grasping is in the second position. The control mechanism includes a single resetting device that resets each trip when the operator moves the device for grasping from the first position into the second position.

An actuator for a circuit breaker in a switchgear includes a housing, an actuating shaft, at least one armature, and at least three windings. The housing is defined with a bore along a longitudinal axis of the housing. The bore of the housing facilitates displacement of the actuating shaft within the bore. The actuating shaft is connectable to an electrical component of a circuit breaker. On selective energization of the at least three windings, the at least one armature connected to the actuating shaft is configured to be displaced within the bore to facilitate multiple stage-based configuration of the actuator.