The RM22UB 1-phase voltage control relay monitors overvoltage and undervoltage events in window mode. It features a sealable cover to help protect the settings, a dial pointer LED indicator for relay power ON status, a relay output status LED and a control status indicator LED. Tipical applications are protection of electronic or electromechanical devices against overvoltage and undervoltage; emergency power supply switching in abnormal conditions; DC motor overspeed control; monitoring of AC or DC supplies; battery and speed monitoring (with tacho-generator).
