The CM5X and CM5XL plastic case circuit breakers (hereinafter referred to as circuit breakers) are internationally advanced and developed using dual break point structure technology Horizontal miniaturized circuit breakers are divided into: ——Thermomagnetic CM5X-125 circuit breaker, with a current range of 1.5A to 125A; ——The CM5XL-125 thermal magnetic circuit breaker with residual current protection has a current range of 1.5A to 125A and a residual current range of 30mA to 500mA.