Overview of molded case circuit breaker

The molded case circuit breaker can automatically cut off the current when the current exceeds the tripping setting. Plastic shell refers to the plastic insulator used as the shell of the device to isolate the metal parts between conductors and grounding. Molded case circuit breakers usually contain thermal magnetic tripping units, while large models of molded case circuit breakers will be equipped with solid-state tripping sensors. The tripping unit is divided into thermal magnetic tripping unit and electronic tripping unit. Commonly used, the rated current is 15 25 30 40 50 60 75 80 100 125 160 200 225 315 350 400 500 630 A.