Lighting control module mechanical override

A control module for selectively switching electrical power from an electrical power source to a load circuit comprising:

• a housing;
• an electromechanical actuator comprising a permanent magnet in the housing having a moveable plunger;
• a fixed contact fixedly mounted in the housing;
• a contact arm in the housing comprising an elongate bar having a pivot defining opposite first and second legs, the first leg being operatively connected to the plunger to be selectively positioned thereby and including a moveable contact for selectively electrically contacting the fixed contact, and the second leg including a lever, the permanent magnet being operable to hold the contact arm in a position such that the moveable contact is separate from the fixed contact;
• a rotational actuator rotationally mounted to the housing, the rotational actuator including a leg proximate the lever so that rotational movement of the rotational actuator pivotally moves the contact arm to override the electromechanical;
• and
• an operating spring disposed between the housing and the contact arm to bias the switching device contacts to a closed position and wherein actuation of the electromechanical actuator selectively separates the contacts and the rotational actuator, when manually turned to an override position, overrides the electromechanical actuator and moves the contact arm to the closed position.

A multipole switching device for selectively switching electrical power from an electrical power source to a load circuit comprising:

• first and second control modules, each comprising a housing, an electromechanical actuator comprising a permanent magnet in the housing having a moveable plunger, a fixed contact fixedly mounted in the housing, and a contact arm in the housing comprising an elongate bar having a pivot defining opposite first and second legs, the first leg being operatively connected to the plunger to be selectively positioned thereby and including a moveable contact for selectively electrically contacting the fixed contact, and the second leg including a lever, and a rotational actuator rotationally mounted to the housing, the rotational actuator including a leg proximate the lever so that rotational movement of the rotational actuator pivotally moves the contact arm to override the electromechanical actuator, the permanent magnet being operable to hold the contact arm in a position such that the moveable contact is separate from the fixed contact wherein each control module further comprises an operating spring disposed between the housing and the contact arm to bias the switching device contacts to a closed position and wherein actuation of the electromechanical actuator selectively separates the contacts and each rotational actuator moves the associated contact arm to the closed position;
• and
• a push rod mechanically linking the rotational actuators, when manually turned to an override position, overrides the electromechanical actuator and of the first and second control modules.