▎ 摘　　要

NOVELTY - The utility model claims a vacuum circuit breaker. the radiator of the vacuum breaker is connected with surface and/or conductive circuit surface is covered with graphene. This utility model through the radiator connecting surface of the vacuum breaker and/or each conductive loop component surface covered with graphene, accelerates the conduction and radiation of heat, the radiator connecting surface and the conductive loop part surface is covered with graphene, which can accelerate the heat conduction to the radiator by a conductive loop, improves the thermal conductivity of the conductive loop, which can reduce the temperature rise of the vacuum breaker reaches 3 to 10 degrees C.