1、Dual Power Supply: 2P 40A dual power automatic transfer switch, A is the common power supply and B is the backup power supply, suitable for AC system with a frequency of 50/60Hz. 2、Working Principle: When the main power supply (A) fails, the transfer switch will automatically switch to the backup power supply (B) to continue working, with a switching speed of less than 50ms. 3、Good Performance: The rated current is 40A, the insulation voltage is 690VAC, and has a wide range of application, effectively solving the faults and inconveniences caused by power outages. 4、Flexible Installation: The 2P dual power changeover switch has a simple structure that can be installed vertically or horizontally in the cabinet, adapting to more installation environments. 5、Flame Retardant Shell: The automatic transfer switch housing is made of flame retardant PC material, which has high strength, heat resistance, impact resistance, and long service life. Item Type: Dual Power Automatic Transfer Switch Rated Current: 40A Class: PC Frequency: 50/60Hz Standard: IEC60947-6 Rated Short Circuit Current Limit (RT16-00/63A): 50KA Operating Temperature Range: -5℃-40℃, the average temperature within 24 hours should be lower than +35℃ Storage Temperature Range: -25℃-55℃, up to +70℃ in a short time (within 24 hours) 1 x Dual Power Automatic Transfer Switch