Features Dual Power Transfer Switch: Manually transfer to standby power supply or generator during common power failures, ensuring continuous power reliability. High Safety: Multiple stage circuit breaker and interlock mechanism provide both main and auxiliary circuit leakage protection. Great Reliability: High breaking capacity, impact resistant and flame retardant materials ensure stability and reliability. Rail Installation: Standard rail installation with compact structure for convenient installation and easy operation. Widely Used: Suitable for critical power needs in fire protection, hospitals, skyscrapers, military, construction, banks, and networks. Specification: Item Type: Interlock Circuit Breaker Material: PVC Rated Voltage: AC450V Frequency: 50Hz Stage: 2P+2P Breaking Capacity: 10KA Electrical Life: No less than 10000 times Mechanical Life: No less than 20000 times Warm Test: Class 2 (relative humidity 95% at 55℃) Package List: 1 x Interlock Circuit Breaker Package List 1 x Interlock Circuit Breaker