Dold RN9877.11/800 AC150-450V US290V, Overvoltage relay, sku: 0068251

The overvoltage relay RN 9877/800 of the VARIMETER PRO series monitor overvoltage in a AC network. The measurement is very simple and without extensive wiring as there is no auxiliary power supply necessary. The early detection of up-coming break downs and preventive maintenance avoid expensive damages. As user you profit from the reliability and availability of your plant.

• According to IEC/EN 60255-1
• For monitoring of AC single-phase with 50 / 60 Hz
• Detection of overvoltage
• No separate auxiliary necessary
• Output: 1 changeover contact
• Energized on trip
• Fixed response value AC 290V
• Fixed release delay 180 s
• Fast fault detection
• Width: 52.5 mm