1、OVERLOAD AND SHORT CIRCUIT PROTECTION: This dual power manual transfer switch is equipped with overload and short circuit protection, ensuring the safety of your electrical system. 2、ONE SIDED INTERLOCK FOR ADDED SAFETY: The handle of the right side circuit breaker is interlocked with the internal disengagement mechanism of the left side circuit breaker. Therefore, opening the right side circuit breaker will trip the left side circuit breaker. When the right side circuit breaker is open, attempting to open the left side circuit breaker will fail, and the right side circuit breaker must be manually closed before the left side circuit breaker can be opened. 3、SAFE TO USE: When both handles are simultaneously turned on, only the right side circuit is energized. The disengagement mechanism of the left side circuit breaker is pre disengaged, eliminating the danger of both circuits being simultaneously energized. 4、ROBUST CONSTRUCTION: The switch is constructed with silver alloy contacts for enhanced conductivity and a PC flame retardant casing for added safety. 5、3 COLOR INDICATOR WINDOW: The switch features a three color indicator window, with red indicating tripped, yellow indicating overload protection, and green indicating normal operation. 6、WIDE APPLICATIONS: This power transfer switch is suitable for use in RVs, homes, generators, or other dual power systems, offering versatility for various applications.