Specification:Item Type: Power Automatic Transfer SwitchMaterial: PCRated Working Voltage: AC400VControl Voltage: 220VRated Isolation Voltage Ui: 1000VRated Impulse Withstand Voltage Uimp: 6KVRated Short Time Withstand Voltage: 5kAUsage Category: AC 33BRated Production Capacity: 10IeRated Breaking Capacity: 8IeRated Power: 50HZGrade: pcWorking 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 allowedPackage List:1 x Power Automatic Transfer Switch1 x Handle 2 x Key 1 x Manual 12 x 12 x NutNote: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 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.