ABB – 1SVR650669R9400 – CM‑IVN Coupling Unit for CM‑IWN Relays, 690VAC / 1000VDC

The ABB 1SVR650669R9400 (CM‑IVN) is a passive coupling unit designed to extend the voltage measurement range of ABB CM‑IWN insulation monitoring relays. It allows monitoring in systems up to 690 VAC or 1000 VDC and requires no additional power supply. Ideal for photovoltaic, industrial, or marine applications requiring enhanced insulation resistance surveillance.

Key Features:

• Model: CM‑IVN

• Part Number: 1SVR650669R9400

• Function: Voltage range expansion for insulation monitoring relays

• Compatible With: ABB CM‑IWN.x series

• System Voltage: Up to 690 VAC / 1000 VDC

• Frequency: DC or 15–400 Hz

• Terminals: Screw-type, up to 2×2.5 mm²

• Mounting: 35 mm DIN rail (45 mm width)

• Power Supply: Not required (passive unit)

• Standards: IEC/EN 61557‑8, IEC/EN 61326‑2‑4, UL 508

• Protection Class: IP50

• Weight: ~179 g