ABB – CM‑IWN.5 – Insulation Monitoring Relay 0–400 VAC/600 VDC (1SVR650660R0400)

The ABB CM‑IWN.5 (Order Code 1SVR650660R0400) is a multifunction insulation resistance monitoring relay designed for unearthed (IT) AC/DC systems up to 400 VAC or 600 VDC. Compliant with IEC 61557‑8, it provides configurable thresholds for pre-warning and shutdown, offering reliable protection for photovoltaic systems, industrial controls, and electrical safety applications.

Key Specifications:

• Model / Part Number: CM‑IWN.5 / 1SVR650660R0400  

• System Voltage: 0–400 VAC / 0–600 VDC (expandable to 690 VAC / 1000 VDC with coupling unit CM‑IVN)  

• Supply Voltage: 24–240 VAC/DC  

• Insulation Thresholds:

  • R1 (shutdown): adjustable 1–100 kΩ (in 1 kΩ steps)

  • R2 (pre-warning): 2–200 kΩ (2 kΩ steps)

• Configurable Output Relays: 1×2 C/O or 2×1 C/O  

• Size: 45 mm DIN-rail width – half-module  

• LED Indicators: Power (green), fault (red), relay status (yellow)  

• Functions: Test/reset button, interrupted-wire detection, selectable auto/manual reset  

• Safety Standard: IEC/EN 61557‑8