Voltage Relay RN 9854 The measuring relays RL 9854 and RN 9854 of the VARIMETER series monitors overvoltage, undervoltage and voltage range in single-phase systems. The measurement is very simple and without extensive wiring as there is no auxiliary power supply necessary. The monitoring functions are easily selectable using a single turn switch without complex menu structure. 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 . Wide measuring voltage range . Easy setting Features . According to IEC/EN 60255-1 . For monitoring AC single phase with 50 /60 Hz . Detection of - Overvoltage - Undervoltage - Voltage range excess in single-phase AC voltage systems . No separate auxiliary necessary . Output: changeover contact . De-Energized on trip . Adjustable switching voltage . Adjustable hysteresis for reset . Adjustable switching delay . Fast fault detection . RL 9854: Width 35 mm RN 9854: Width 52.5 mm Technical specifications Width: 52,5mm Operate delay: Yes Enclosure design: Distribution board 1- / 3-phase: 1 Output contacts: 1 C/O contact Auxiliary voltage: Without Type: RN 9854 Nominal voltage max.: AC 528V Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: RN9854.11 AC150-528V 4-20% 0-30S Art. No.: 0069301