Universal circuit breaker, also known as frame circuit breaker, is a mechanical switch that can connect, carry and break current under normal circuit conditions, and can also connect, carry and break current for a certain period of time under specified abnormal circuit conditions. Electrical appliances. Universal circuit breakers are used to distribute electric energy and protect circuits and power equipment from overload, undervoltage, short circuit, etc.

This type of circuit breaker generally has a steel frame, and all components are installed within the frame. It has a large capacity and can be equipped with multiple functional releases and more auxiliary contacts. It has high segmentation capacity and thermal stability, so it is often used in places that require high breaking capacity and selective protection.

Intelligent universal circuit breaker is suitable for power distribution networks with AC 50Hz, rated voltage 380V, 660V, and rated current 200A-6300A. It is mainly used to distribute electric energy and protect lines and power equipment from overload, undervoltage, and short circuit. Single-phase The circuit breaker has a variety of intelligent protection functions to prevent the hazards of grounding and other faults. It can achieve selective protection and precise action to avoid unnecessary power outages and improve power supply reliability. Under normal conditions, it can be used for infrequent line switching. Circuit breakers below 1250A can be used to protect motors from overload and short circuit in AC 50Hz voltage 380V networks. Under normal conditions, it can also be used for infrequent starting of motors.