Operating shaft for a multiple electrical power circuit breaker and method for its production

摘要

An operating shaft (1) for operation of switching contacts in a multipole electrical power breaker has a shaft tube (2), which is intended to provide a rotating bearing, and levers (4) which project from it and are composed of dye-cast metal. These levers (4) are mounted on the shaft tube (2), which is formed from a tubular semi-finished product composed of a metal which has a higher melting point than that of the levers (4). All the levers on an operating shaft (1) can be formed as an integral dye-cast body (3) or as individual dye-cast bodies. The described configuration allows operating shafts (1) for power breakers of different sizes to be manufactured integrally.