CHARGING ASSEMBLY WITH OVER ROTATION CONTROL AND ELECTRICAL SWITCHING APPARATUS EMPLOYING SAME

摘要

A charging assembly (200) is provided for an electrical switching apparatus such as a circuit breaker (102). The circuit breaker (102) includes a housing (104) separable contacts (106) and an operating mechanism (108) for opening and closing the separable contacts (106). The charging assembly (200) includes a stored energy mechanism such as a closing spring (204) which is movable between charged and discharged positions. A cast member (218) is coupled to the closing spring (204) and moves therewith. The cast member (218) includes a projection (220). A cam shaft (208) is pivotably coupled to the housing (104) and includes a number of cams (210 212). A catchment (214) which is also pivotably coupled to the housing (104) includes an impact surface (224) and a protrusion (226). The impact surface (224) cooperates with a corresponding one of the cams (212) to resist over rotation of the cam shaft (208). The protrusion (226) of the catchment (214) cooperates with the projection (220) of the cast member (218) to maintain the desired relationship between the catchment (214) and the cam (212).