ABB – CM‑ESS.2S (1SVR730830R0400) – Single‑Phase Voltage Monitor, 24–240 VAC/DC

The ABB CM‑ESS.2S (part number 1SVR730830R0400) is a compact DIN-rail voltage monitoring relay for single-phase AC/DC systems. Featuring four selectable monitoring ranges from 3V to 600V RMS, it provides adjustable over-/undervoltage detection with an optional delay. Equipped with dual SPDT relays and a sealable front cover, it’s ideal for safeguarding sensitive equipment.