Abstract: A circuit breaker drive is disclosed. The circuit breaker drive includes an actuator for assuming a plurality of positions and a lever coupled to the actuator and responsive to the action of the actuator. The circuit breaker drive also includes a cam rotatable about an axis, the cam is juxtaposed proximate the lever, and the lever is operative to rotate the cam about the axis. The circuit breaker drive further includes a rack coupled to the cam and to an operating handle of the mol circuit breaker. Rotation of the cam about the axis drives the rack to move the operating handle.

Abstract: In the three-terminal motor operator of the present invention, current flowing through half coil causes the rotor to rotate in a first direction, and current flowing through half coil causes the rotor to rotate in a second direction. Rotation of the rotor in the first direction causes the mechanical linkage to move the circuit breaker operating handle towards its “off” or “reset” positions. Rotation of the rotor in the second direction causes the mechanical linkage to move the circuit breaker operating handle towards its “on” position. Pressing the “off” button causes electrical current to flow through the half coil until the circuit is broken by the limit switch. Pressing the “on” button causes electrical current to flow through the half coil until the circuit is broken by the limit switch.

Abstract: In the three-terminal motor operator of the present invention, current flowing through half coil causes the rotor to rotate in a first direction, and current flowing through half coil causes the rotor to rotate in a second direction. Rotation of the rotor in the first direction causes the mechanical linkage to move the circuit breaker operating handle towards its “off” or “reset” positions. Rotation of the rotor in the second direction causes the mechanical linkage to move the circuit breaker operating handle towards its “on” position. Pressing the “off” button causes electrical current to flow through the half coil until the circuit is broken by the limit switch. Pressing the “on” button causes electrical current to flow through the half coil until the circuit is broken by the limit switch.

Abstract: A circuit breaker motor drive for molded case circuit breakers is disclosed. The circuit breaker motor drive comprises an actuator for assuming a plurality of positions, a lever coupled to the actuator and responsive to the action thereof assuming thereby one of a plurality of positions and a cam coupled to the molded case circuit breaker and juxtaposed proximate the lever the cam operative to engage the lever in a plurality of configurations in response thereto.