Monitoring applications: Phase, voltage
Supply voltage: 160 to 690 Vac
Contact arrangement: 2-pole changeover switch
Voltage sensitivity: Undervoltage
Electrical phases: 3
Voltage measuring range: 160 to 690 Vac
Sensitivity of the phase: Phase asymmetry, phase failure, phase sequence
Delay time: 0.1 to 20 s
Width: 22.5 mm

Supply voltage and three-phase voltage. The 3UG4 relay is designed for monitoring current, power factor, and active current, making it ideal for monitoring motor loads and the functionality of electronic loads. These components anticipate the effects of wear and failures, allowing for appropriate measures to be taken before serious damage occurs. Versions with a wide voltage range reduce the requirements for spare parts inventory. Variable settings for overrange, undervoltage, or window monitoring, along with delay times and reset switches, are included. Actual values and error types are permanently displayed. The relay features removable terminals and is 22.5 mm wide. Models 3UG4614 to 3UG4617 can be set digitally, with error memory and LCD display, and include a 1-20 V hysteresis for phase loss.