Slot motor configuration for high amperage multi-finger circuit breaker

A pole of a multi-finger circuit breaker comprising:

• a plurality of first fingers coupled to a carrier body, the plurality of first fingers configured for pivotal movement between a withstand position and a blow open position via a carrier pivot of the carrier body;
• at least one second finger coupled to the carrier body, the at least one second finger is longer in length to a length of a first finger of the plurality of first fingers;
• and
• a slot motor disposed adjacent to the plurality of first fingers and the at least one second finger, the slot motor having a U-shaped portion that is configured to provide a first magnetic field force to amplify a second magnetic field force being applied on the at least one second finger, wherein a set of movable contacts of a first plurality of movable contacts coupled to the plurality of first fingers are located not inside the U-shaped portion of the slot motor while a movable contact of the first plurality of movable contacts coupled to the at least one second finger is located inside the U-shaped portion of the slot motor.

A method of opening a plurality of movable contacts of a pole of a circuit breaker during a short circuit, the method comprising:

• providing a plurality of first fingers coupled to a carrier body, the plurality of first fingers configured for pivotal movement between a withstand position and a blow open position via a carrier pivot of the carrier body;
• providing at least one second finger coupled to the carrier body, the at least one second finger is longer in length to a length of a first finger of the plurality of first fingers;
• and
• generating a first magnetic field force using a slot motor disposed adjacent to the plurality of first fingers and the at least one second finger to amplify a second magnetic field force being applied on the at least one second finger, wherein a set of movable contacts of a first plurality of movable contacts coupled to the plurality of first fingers are located not inside a U-shaped portion of the slot motor while a movable contact of the first plurality of movable contacts coupled to the at least one second finger is located inside the U-shaped portion of the slot motor.