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Monitoring relay 22.5mm wide, 3-phase over or under voltage monitoring bewteen 1V and 150V VAC ro VDC For monitoring over- and undervoltages simultaneously. Manual resetting and automatic resetting are supported by one relay. Separate settings and outputs are supported for over- and undervoltages. Relay warning status can easily be monitored with the LED indicator. Single-phase voltage window relay. In 22.5mm-wide industrial housing. Under and over, low/low or high/high control. Supply voltages: 24VAC/24VDC/115VAC/230VAC. Easy wiring with ferrules