Features 【Dual Power Automatic Transfer Switch】: The PC level infrequent transfer switch adopts dual station design, with A as the common power supply and B as the backup power supply, for 50/60Hz AC system. 【Working Principle】: When the main power supply (A) fails, the switch will automatically switch to the backup power supply (B) to continue working (switching speed less than 50ms). 【Stable Performance】: The rated current of the dual power automatic transfer switch is 40A, and the insulation voltage is 690VAC, ensuring efficient, safe and reliable operation. 【Easy Installation】: This changeover switch has a simple and compact structure, which can be installed vertically or horizontally in the cabinet, has a wide range of applications. 【High Quality Shell】: The transfer switch is made of flame retardant PC material, which has good toughness, impact resistance, pollution level 3, can be used in various environments. Features: 1.The PC level infrequent transfer switch adopts dual station design, with A as the common power supply and B as the backup power supply, for 50/60Hz AC system. 2.When the main power supply (A) fails, the switch will automatically switch to the backup power supply (B) to continue working (switching speed less than 50ms). 3.This changeover switch has a simple and compact structure, which can be installed vertically or horizontally in the cabinet, has a wide range of applications. Specification: Item Type: Dual Power Automatic Transfer Switch Material: PC Rated Current In: 40A Insulation Voltage Ui: 690VAC Rating: PC Frequency: 50, 60Hz Standard: IEC60947 6 Rated Short Circuit Current Limit (RT16-00/63A): 50KA Package List: 1 x Dual Power Automatic Transfer Switch Note: 1. The working environment temperature range is ‑5℃ to +40℃, and the average temperature within 24 hours should be below +35℃. The storage environment temperature range is ‑25℃ to +55℃, and can achieve +70℃ in a short period of time (within 24 hours). 2. When the ambient temperature is +40℃, the relative humidity at the installation site shall not exceed 50%. The lower the temperature, the higher the relative humidity. Appropriate measures should be taken to prevent condensation caused by temperature changes. Package List 1 x Dual Power Automatic Transfer Switch