DGG5 high-breaking miniature circuit breaker (hereinafter referred to as circuit breaker) is suitable for protection power distribution lineswith Ac 50Hz or OHz, rated working voltage 230/400v, rated current to 63A circuit, rated short-circuit breaking capacity not exceeding6000A. As the line is not connected frequently. With overload and short circuit protection. At the same time, it has powerful auxiliaryfunction modules, such as auxiliary contacts, alarm indication contacts, shunt release, undervoltage release, remote trip control and otheimodules.