Specifications

Product Type

Liquid Level Monitoring Relay

Brand

ABB

Series

CM-ENS.2

Function Liquid level monitoring and control; fill or drain selectable	Rated Control Supply Voltage (Us) 24 to 240 V AC/DC	Rated Insulation Voltage (Ui) 300 V
Rated Operational Voltage (Ue) 250 V AC	Rated Operational Current AC-15 (Ie) 3:00 AM	Timing Range Start-up: maximum 900 ms (0.1 to 10 kO); maximum 1.3 s (10 to 100 kO); maximum 6.3 s (100 to 1000 kO); measuring cycle: 700 ms (0.1 to 10 kO); 1.1 s (10 to 100 kO); 5 s (100 to 1000 kO)
Measuring Range 0.1 to 1000 kO	Rated Frequency 50/60 Hz	Terminal Type Screw connection
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 12 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

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 0.125 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 60255-27

ABB CM-ENS.21S Liquid Level Monitoring Relay 0-1000kOhm 24-240VAC/DC 3 -Electrode 1CO SPDT 4A