TDP-1 Single Phase Modular Digital Over and Under Voltage Protector is a new type of self-healing phase failure & phase sequence protective relay. It’s a ideal device for protecting household electrical appliances. 

The protector can quickly disconnect the power supply to protect the appliances in case of abnormal power supply. It will automatically connects the power in 1-2 minutes after the power supply recovers. All the protective actions are automatically controlled. 

The voltage cutoff value and delay time are adjustable according to specific demands. The digital panel shows in time condition of the voltage. This product is convenient in use reliable in quality and excellent in performance.