Overvoltage relay
RN 9877/800

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.

Advantages
. Preventive maintenance
. For better productivity
. High repeat accuracy

Features
. 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

Technical specifications
Width: 52,5mm
Enclosure design: Distribution board
1- / 3-phase: 1
Standard measuring range: AC 150 - 450 V
Measuring range max.: 450 V
Output contacts: 1 C/O contact
Auxiliary voltage: Without
Type: RN 9877/800


Manufacturer: E. Dold & Söhne GmbH & Co. KG
Type: RN9877.11/800 AC150-450V US290V
Art. No.: 0068251