Circuit breaker with single phase control

A circuit breaker, comprising:

• a frame defining a housing having an interior compartment;
• first, second and third single-phase vacuum interrupters mounted within the interior compartment, and each having respective fixed and movable contacts and a contact drive shaft connected to the movable contact for moving said movable contact into contact with the fixed contact and a closed circuit condition or out of contact with the movable contact and into an open circuit condition;
• first, second and third magnetic actuators mounted on respective first, second and third vacuum interrupters, each comprising,
• a fixed core,
• a plurality of permanent magnets surrounding the fixed core, and
• a movable core received within the fixed core and operatively connected to the respective contact drive shaft of the single-phase vacuum interrupter to which the respective magnetic actuator is mounted;
• a controller connected to each of the first, second and third magnetic actuators, and configured to generate an open or close signal to a respective magnetic actuator and drive one or more of the contact drive shafts and respective movable contacts into an open or closed circuit condition.

An outdoor circuit breaker, comprising:

• a frame defining a housing having an interior compartment and an outer surface and a plurality of terminal bushings mounted on the outer surface;
• first, second and third single-phase vacuum interrupters mounted within the interior compartment, and each having respective fixed and movable contacts and a contact drive shaft connected to the respective movable contact for moving said movable contact into contact with the fixed contact and a closed circuit condition or out of contact and an open circuit condition, and each single-phase vacuum interrupter including first and second terminals electrically connected to a selected terminal bushing;
• first, second and third magnetic actuators mounted on respective first, second and third vacuum interrupters, each comprising,
• a fixed core,
• a plurality of permanent magnets surrounding the fixed core, and
• a movable core received within the fixed core and including an output shaft operatively connected to the respective contact drive shaft of the single-phase vacuum interrupter to which the respective magnetic actuator is mounted;
• a controller connected to each of the first, second and third magnetic actuators, and configured to generate an open or close signal to a respective magnetic actuator and drive one or more of the contact drive shafts and respective movable contacts into an open or closed circuit condition.