Specifications

Product Type

Insulation monitoring relay

Brand

ABB

Series

CM-IWS.2

Function Insulation resistance monitoring of unearthed AC IT systems up to 400 V AC	Electrical Endurance 100000 cycle	Rated Control Supply Voltage (Us) 24 to 240 V AC/DC
Rated Insulation Voltage (Ui) 400 V (supply/measuring; measuring/output); 300 V (supply/output)	Rated Operational Current AC-15 (Ie) 3 A	Measuring Range 1 to 100 kO; system voltage 0 to 400 V AC
Rated Frequency 50/60 Hz	Terminal Type Screw terminals	Rated Operational Current AC-12 (Ie) 4 A
Rated Operational Current DC-12 (Ie) 4 A	Rated Operational Current DC-13 (Ie) 2 A	Time Range Maximum 10 s start-up; maximum 10 s response
Minimum Switching Capacity 24 V / 10 mA	Rated Operational Voltage (AC/DC) 250 V AC / 300 V DC	Output 1 c/o (SPDT) contact
Short-Circuit Protective Devices 6 A fast-acting (n/c contact); 10 A fast-acting (n/o contact)	Mechanical Durability 30000000 cycle

Conductor Cross Section Flexible

1 x 0.5 to 2.5 mm²; 2 x 0.5 to 1.5 mm²

Conductor Cross Section Solid Core

1 x 0.5 to 4 mm²; 2 x 0.5 to 2.5 mm²

Housing Material

UL 94 V-0

Depth 103.7 mm	Height 85.6 mm	Weight 0.141 kg
Width 22.5 mm

Storage Temperature

-40 to 85 °C

Operating Temperature

-25 to 60 °C

IP Rating

IP50 (housing); IP20 (terminals)

Standards and Approvals

IEC/EN 60947-5-1; IEC/EN 61557-1; IEC/EN 61557-8; EN 50155; IEC 60571; IEC/EN 61373; EN 45545-2

ABB CM-IWS.2S Insulation Monitoring Relay 1-100kOhm 24-240VAC/DC 1CO SPDT 4A