ABB – CM‑IWN.1S (1SVR750660R0200) – Insulation Monitoring Relay, 24–240 V AC/DC

The ABB CM‑IWN.1S (P/N 1SVR750660R0200) is a precision insulation monitoring relay designed for unearthed (IT) AC and DC systems up to 400 V AC / 600 V DC. Its diagnostic capabilities include adjustable prewarning and alarm thresholds via front-panel rotary switches, configurable relay outputs, and built-in indicators. DIN-rail mountable at 45 mm width, it ensures critical safety in industrial installations.