AC220V Single Phase Pump Control Panel , Well Pump Motor Control Box With One Key Setting

Intelligent Single Pump Controller for Single Phase Water Pump AC220 Intelligent Pump Controller Model S521 Description : Intelligent controller S521 is widely used for control and protection of single phase 220V controller ,it has function of over load protection ,under voltage protection ,over voltage protection ,the most important advantage is that we have “one key setting “ , it’s easy for pump users to set overload and dry run current value . Product function / features