1. Precision Bimetal is used as thermal overload current release to provide delay protection for the line;
2. Electromagnetic high-speed release with solenoid, used for short circuit protection of lines;
3. Prevent overloading of the distribution system (if there is no short circuit fault in the circuit, overheating and overloading may occur that may damage the wiring);
4. Prevent short circuits in the distribution system and electrical devices (such as faults caused by circuit faults or incorrect connections).
