Item features: *Rated voltage: 400 V. *Rated current: 125 A/100 A/80 A. *Pole: 2P/4P *Size: as shown Properties: 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 power failure or power failure, the Dual Power Transfer Switch automatically switches to standby power, allowing the devices to continue working normally. Millisecond switching: This switch has a very fast response time. If there is an anomaly 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 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 received CE certification and can be used without hesitation. Good service. If you are not satisfied, please do not leave a bad review or return the goods. You can contact us first and we will do our best to solve your problem. Scope of delivery: 1*automatic dual power switch