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Undervoltage monitoring in three-phase networks (each phase to neutral) with a fixed threshold, fixed hysteresis, and integrated test button. It was specifically developed for emergency lighting systems according to DIN VDE 0108. The device can also be used to monitor a single phase. All unused inputs must be connected to the connected phase. If a backvoltage caused by the load is greater than the set threshold, no fault message is generated. Pass signal: Relay is energized (contacts 11-14 and 21-24 closed), LED is off. Fault signal: Relay is de-energized (contacts 11-14 and 21-24 open), LED is on. Button press: Relay returns to its original position (contacts 11-14 and 21-24 open), LED illuminates. Connection via spring-loaded terminals (push-in).
€82,99