Specifications

Product Type

Insulation Monitoring Relay

Brand

ABB

Series

CM-IWS.1

Function Insulation resistance monitoring of unearthed AC, DC and mixed AC/DC IT systems up to 250 V AC and 300 V DC	Rated Control Supply Voltage (Us) 24 to 240 V AC/DC	Rated Insulation Voltage (Ui) 300 V
Rated Operational Voltage (Ue) 250 V AC / 300 V DC	Rated Operational Current AC-15 (Ie) 3:00 AM	Timing Range Minimum 15 s start-up; maximum 10 s response (pure AC); maximum 15 s response (DC or rectified AC)
Measuring Range 1 to 100 kO; system voltage 0 to 250 V AC / 0 to 300 V DC	Rated Frequency DC or 15 to 400 Hz	Terminal Type Push-in terminals
Rated Operational Current AC-12 (Ie) 4:00 AM	Rated Operational Current DC-12 (Ie) 4:00 AM	Rated Operational Current DC-13 (Ie) 2:00 AM
Minimum Switching Capacity 24 V / 10 mA	Output 1 c/o (SPDT) contact	Short-Circuit Protective Devices 6 A fast-acting (n/c contact); 10 A fast-acting (n/o contact)
Electrical Life 100000 cycle

Conductor Cross Section Flexible

2 x 0.5 to 1.5 mm²

Conductor Cross Section Solid Core

2 x 0.5 to 1.5 mm²

Housing Material

UL 94 V-0

Depth 103.7 mm	Height 85.6 mm	Weight 0.137 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.1P Insulation Monitoring Relay 1-100kOhm 24-240VAC/DC 1CO SPDT 4A