1、Better Protection: Can be used as a hand operated miniature dual power transfer switch. It is composed of multiple stage circuit breaker and interlock mechanism, enabling the main circuit and auxiliary circuit leakage protection function. 2、Quicker Switching: When the common power supply fails, the standby power supply or generator can be manually transferred to ensure the reliability and safety of power supply. 3、Wider Application: Widely used and very suitable for places where power failure is not allowed, such as fire fighting, hospitals, skyscrapers, military industry, construction markets, banks, networks, etc. 4、Reasonable Design: Reliable performance and high breaking capacity. The shell and components are made of impact resistant and high flame retardant materials. 5、Simple to Install: The interlocking transfer circuit breaker is very delicate, reasonable and reliable in design, beautiful in appearance, fast in operation, and simple and convenient in standard guideway installation.