Power Switch Mains Switch 125A/100A/80A 2P/4P Pole 400V Automatic Transfer Switch Dual Power Millisecond Switching Dual Power Automatic Transfer Switch: The Dual Power Automatic Transfer Switch is used to switch between two power sources, including the main power source and the standby power source. In the event of a sudden failure or blackout of the mains power supply, it will automatically go to the standby power supply via the dual power supply transfer switch, allowing the equipment to continue to operate normally.Millisecond Switching: This switch has a very fast response time. If there is an abnormality in the normal power supply, this switch can switch to the emergency power supply in a short time and work immediately to ensure the continuity of the power supply.Safe and Durable This product is made of high quality flame retardant material, with good insulation performance, high temperature resistance and durability. It also has a variety of safety devices such as short circuit, overload, undervoltage, fire protection, etc., which can be used safely.Wide Application: This product is a photovoltaic version of the double power automatic switch. It can be used not only on generators, but also on UPS and inverters, and can be connected to solar and PV as emergency power. The product has passed CE certification and can be used with confidence.Good service. If you are not satisfied, please do not leave a bad review or send back the goods. You can contact us first and we will do our best to solve your problem.Specifications:*Rated voltage: 400 V.*Rated current: 125 A/100 A/80 A.*Pole:2P/4P*Size: as shown Package includes:1 x dual power automatic transfer switch. Note:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.