Patent ID: 6946614
Filing Date: 2005-09-20
Classification: H01H

Abstract:
1. A circuit breaker comprising an assembly consisting of a circuit interrupter between two main current path conductors, the interrupter being encapsulated within solid dielectric material and supported at one end of an earthed electrically conductive elongate support whose other end is mounted on an earthed metal housing, the elongate support also being encapsulated within solid dielectric material, wherein said interrupter is operated by means of a mechanical linkage comprising a rod of solid dielectric material extending between said interrupter and an actuator, said linkage being mounted externally of the conductive elongate support and said encapsulating solid dielectric material, said actuator being selected from the group consisting of a permanent magnet actuator, a spring-type actuator, a hydraulic actuator, a pneumatic actuator, and a solenoid actuator, and wherein the ends of the rod pass through flexible bellows, at one end into a space within the dielectric material encapsulating said interrupter, and at the other end into said earthed housing, whereby no internal insulation is exposed to high voltage stress.