DOLD RL 9877

Function	Phase monitor
1- / 3-phase	3
Standard measuring range	3 AC 80 … 230 V / 45 ... 130 V
Measuring range max.	230 V
Output contacts	1 w
Enclosure design	Installationsverteiler
Width	35 mm
Type	RL 9877

According to IEC/EN 60 255-1 For monitoring of AC 3- and single-phase with 50 /60 Hz Detection of-- Overvoltage-- Undervoltage-- Voltage range excess-- Phase failure-- Phase asymmetry-- missing neutral e.g. broken neutral wire-- and phase sequence in 3-phase systems With or without neutral No separate auxiliary necessary Output: 1 changeover contact De-energized on trip Adjustable hysteresis for reset Adjustable switching delay Fast fault detection Width:-- RL 9877: 35 mm-- RN 9877: 52.5 mm