The invention aims to provide the
capacitor which is convenient to combine, the
circuit breaker is safe and reliable, and the
capacitor can be quickly disassembled and assembled to realize quick reset. A PCBA terminal board is arranged on the lower shell, a
circuit breaker is arranged above the PCBA terminal board, an upper shell is detachably installed on the upper portion of the lower shell, the
circuit breaker is detachably installed on the inner wall of the upper shell, the circuit breaker can be taken out from the upper portion of the upper shell, a low-
voltage capacitor unit is arranged on the lower portion of the lower shell and comprises a capacitor shell fixedly and detachably installed with the lower shell, and the capacitor shell is connected with the circuit breaker. The capacitor shell is provided with at least two capacitor modules, the capacitor modules are fixed on the drawer type slide rails, and the capacitor modules are provided with quick-plug conductive columns. Dual
backup of mechanical
bimetallic strip temperature protection and electronic protection is achieved, reliable action is achieved when the temperature reaches the preset temperature, response is rapid, and an overload, over-temperature and over-
voltage comprehensive
protection mechanism is achieved; rapid plugging and independent replacement of the capacitor module are realized, a drawer type slide rail structure is supported, and maintenance operation is facilitated.