HYBRID MEDIUM VOLTAGE CIRCUIT BREAKER

摘要

The circuit breaker comprises main contacts 26,30 and a vacuum cartridge 38 in parallel which performs breaking, the assembly being contained in an enclosure 10 filled with sulphur hexafluoride. The cartridge is designed for dielectric withstand in this gas. The contacts of the cartridge 38 are made of refractory material and a coil generates an axial magnetic field in the arcing zone.