Opening and/or closing control device, in particular for a switchgear apparatus such as a circuit breaker, and circuit breaker equipped with such a device

An opening and/or closing control device for a switchgear apparatus, the control device comprising:

• a support block;
• an armature for rotation around an axis extending perpendicularly to a longitudinal direction of the armature, and mechanically connected to an actuating rod of the contacts of the apparatus, said armature having two ends and being movable in said support block between two stops respectively bounding a rest position and an active position;
• at least one permanent magnet and at least one winding, the at least one magnet holding the armature in the rest position, and when an opening or closing order occurs, the at least one winding is for generating a magnetic field to counteract a force of the at least one magnet to move the armature to the active position, thereby resulting in movement of the contacts, wherein:
• the armature is mounted for rotation between said two stops located in the support, and
• the support block comprises two guiding surfaces between said two stops for cooperating with said two ends of the armature and for guiding the armature in rotation.