Abstract: A circuit breaker (10) including a stationary line bus assembly (47). The stationary line bus assembly (47)comprises a bus body (124) supported by support legs (132) with the bus body (124) having a first longitudinal end portion (125) and a second longitudinal end portion (126), with each end portion terminating at a common end portion (127). The second end portion (126) includes a stationary contact bus (46) in a spaced relationship from the first end portion (125). A line terminal (18) is mounted on the first longitudinal end portion (125) and a contact (44) is attached to the second longitudinal end portion (126). In one embodiment, a bus support (130) is attached to the bus body (124) in the space between the first end portion (125) and the second end portion (126) and separated from the support legs (132) of the bus body (124) by an insulating barrier (134). The stationary bus support (130) can have several configuration.

Abstract: A circuit breaker (10) including a stationary line bus assembly (47). The stationary line bus assembly (47)comprises a bus body (124) supported by support legs (132) with the bus body (124) having a first longitudinal end portion (125) and a second longitudinal end portion (126), with each end portion terminating at a common end portion (127). The second end portion (126) includes a stationary contact bus (46) in a spaced relationship from the first end portion (125). A line terminal (18) is mounted on the first longitudinal end portion (125) and a contact (44) is attached to the second longitudinal end portion (126). In one embodiment, a bus support (130) is attached to the bus body (124) in the space between the first end portion (125) and the second end portion (126) and separated from the support legs (132) of the bus body (124) by an insulating barrier (134). The stationary bus support (130) can have several configuration.

Abstract: A circuit breaker (10) including an electrical arc extinguishing apparatus (105). The electric arc extinguishing arc apparatus (105) includes a first sidewall (106) in a spaced relationship with the second sidewall (107) with a top arc plate (110) mounted between the first and second sidewalls (106, 107). A plurality of intermediate arc plates (114) are mounted between the first (106) and second sidewalls (107) below the top arc plate (110) with each in a spaced apart relationship. A bottom arc plate (116) is mounted between the first and second sidewalls below and apart from the intermediate plates (114) forming an arc chute. The electric arc extinguishing apparatus (105) can also be provided with two end caps (120) with each end cap (120) having an interior cavity (121) with one leg (111) of each arc plate (58) mounted in the cavity (121) of one end cap (120) and the other leg (111) of each arc plate (58) mounted in the cavity (121) of the other end cap (120).