Specifications

Product Type

Insulation Monitoring Relay

Brand

ABB

Series

CM-IWM.11

Function Insulation resistance monitoring of unearthed AC, DC and mixed AC/DC IT systems	Rated Control Supply Voltage (Us) 24V DC	Rated Operational Voltage (Ue) 250V AC
Rated Operational Current AC-15 (Ie) 3A (n/o); 1A (n/c)	Timing Range Less than 10 s at Ce = 1 µF	Rated Frequency DC or 16 to 1000 Hz
Terminal Type Screw terminals	Output 2 x 1 c/o (SPDT) contacts	Short-Circuit Protective Devices 4 A gL
Electrical Life 10000 cycle

Conductor Cross Section Flexible

1 x 2.5mm²; 2 x 1.5mm²; 2 x 2.5mm²

Conductor Cross Section Solid Core

1 x 4mm²

Housing Material

Thermoplastic, UL 94 V-0

Depth 121mm	Height 90mm	Weight 0.5kg
Width 90mm

Storage Temperature

-40°C to 70°C

Operating Temperature

-25 to 60 °C (spaced from heat-generating components); -25 to 45 °C (without spacing)

IP Rating

IP40 (housing); IP20 (terminals)

Standards and Approvals

EN 61557-8; EN 61000-6-2; EN 61000-6-4; EN 61326-2-4; EN IEC 63000; CE

ABB CM-IWM.11 Insulation Monitoring Relay 20-2000kOhm 24VDC 2CO SPDT