Dual Power Automatic Transfer Switch, Dual Power Automatic Transfer Switch AC400V 2 in 1 Out Isolated Power Transfer Switch for, Transfer Switches (250A) Multi : This switch has clear switch position indication, padlock and other functions to achieve isolation between power supply and load. And the switch supports multi , including short circuit , etc. Mechanical Interlock Device: The load isolation actuating switch is equipped with mechanical interlock device to ensure the operation of main and standby power supplies without mutual interference. 4 Operation Functions: This switch has 4 operation functions, including emergency manual operation, electric remote control operation, emergency disconnection operation under automatic control, and automatic control operation. Specification: Rated Working Voltage: AC400V Control Voltage: 220V Rated Isolation Voltage Ui: 1000V Rated Impulse Withstand Voltage Uimp: 6KV Rated Short Time Withstand Voltage: 5kA Usage Category: AC 33B Rated Production Capacity: 10Ie Rated Breaking Capacity: 8Ie Rated Power: 50HZ Grade: pc Working Temperature: - 20 to 45 ℃ (24h average value shall not exceed 35 ℃) Operating Humidity: The average humidity at 40 ℃ shall not exceed 50%, and no condensation is allowed Package List: 1 x Dual Power Automatic Transfer Switch 1 x Handle 2 x Key 1 x Manual 12 x 12 x Nut Note: 1. The left and right mounting brackets of the switch must be fixed on the same flat plane. The size of the mounting hole should be adjusted according to the actual situation. It is strictly prohibited to use the wrong size of the opening to forcibly install the switch, which will wire to the internal deformation of the switch, or even direct damage to the switch. 2. It is recommended to use busbar for the installation of switches 2000A. If the cable installation will increase the stress of the installation bracket, please add effective reinforcement measures. 3. Vibration and gas: in its use environment, there should be no strong vibration or impact, nor should there be harmful gases that corrode metals and damage insulation materials. 4. Surrounding materials: no serious dust, conductive particles or explosive hazardous substances.