Feature: 1. DUAL POWER SWITCHING: This dual power source switching switch allows for manual switching between two power sources. It is designed with overload and short circuit protection, ensuring the safety of your electrical circuits. 2. SIDE INTERLOCKING DESIGN: The handle of the circuit breaker on the right side is interlocked with the internal trip mechanism of the circuit breaker on the left side. This means that opening the circuit breaker on the right side will cause the circuit breaker on the left side to trip. When the circuit breaker on the right side is open, attempting to open the circuit breaker on the left side will fail, and the circuit breaker on the right side must be manually closed before the circuit breaker on the left side can be opened. 3. ROBUST CONSTRUCTION: This switch features silver alloy contacts and a PC flame retardant material housing, ensuring a high level of durability and safety. Additionally, it is equipped with a color indicator (red yellow) to easily identify the status of the switch. 4. WIDE APPLICATIONS: Whether you need it for a motorhome, residential use, generator, or any other dual power source system, this switch is versatile enough to meet your needs. It can be easily installed using screw terminals and 35mm DIN rails, providing flexibility and compatibility. 5. SECURE AND RELIABLE: With its robust design and built in protective functions, this dual power source switch offers a secure and reliable solution for managing your power sources. Its premium components and user friendly features make it an excellent choice for both residential and commercial applications. Specification: Item Type: Dual Power Manual Transfer Switch Material: PC Flame Retardant, Silver Rated Voltage: 400VAC Rated Frequency: 50 60HZ Poles: 4P Short Circuit Breaking Capacity: 3000A Short Time Withstand Current: 1500A/1s Electrical Life: >1500 times Mechanical Life: >8500 times Protection Level: IP20 Ambient Temperature: -5℃ to 40℃ Terminal Cable Size: 16mm² Installation: 35mm Rail . Package List: 1 x Dual Power Transfer Switch