Abstract: A narrow molded case circuit breaker is constructed with a planar cradle having an edge portion to achieve relatching and another edge portion to achieve kicking of the contact arm for weld breaking. A single bonding operation is utilized to connect the movable contact directly to a flexible conductor and at the same time simultaneously secures the movable contact and conductor to the movable contact arm. Since the movable contact is bonded directly to the flexible conductor, the movable contact arm may be constructed of steel or other relatively poor electrical conducting material.

Abstract: A plug-in contact structure for a panelboard which mounts both half and one inch wide circuit breakers includes a plurality of bus bars each having a plurality of integrally formed contact sections spaced along the length of the bars. The contact sections are interleaved in a phased sequence array and each contact section includes only two contact blades. All blades are aligned in a row with the plane of each blade being perpendicular to the length of the row and being disposed from each other by a half inch.

Abstract: In a circuit breaker, the movable contact carrying contact arm is pivotally connected to the contact carrier which pivots on the circuit breaker frame; the contact arm is stamped copper; the contact arm carrier pivot connection includes a pin passing through the walls of the carrier and with respect to which the contact arm pivots; also, improved means for establishing pressure of movable contacts.