How to Use 1. Electric Key Lock: It controls the control switch inside the line power supply. When the electric lock is opened, the switch can be operated automatically by remote control, and then the electric lock is closed. The switch can only be operated through the handle.2. Operating Handle: When operating the switch, the electric lock must be closed.3. Mechanical Padlock: During maintenance, first use the operating handle to turn the switch to position 0, then pull the padlock mechanism and close the padlock to carry out maintenance: (Pulling the padlock of the mechanism will cut off the power supply of the internal control power switch, and the switch cannot be in the electric position or driven manually.)4. Position Indication: Indicates the position of the working area of the switch (I, 0, II)5. Control Voltage: Switch control voltage class 220VAC6. Switch Body: The front part is line I, connected to "mains"; The rear is wire II, connected to "emergency power supply". Specification Item Type: Dual Power Automatic Transfer Switch Material: PC Rated Working Voltage: AC400V Control Voltage: 220V Rated Isolation Voltage Ui: 1000V Rated Impulse Withstand Voltage Uimp: 8KV Rated Short Time Withstand Voltage: 9kA 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 Bolt , 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 lead 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 above 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.