CM-ENS.31P

Name: CM-ENS.31P
Brand: ABB
SKU: CM-ENS.31P

The ABB CM-ENS.31P is a versatile liquid level monitoring relay that ensures accurate control and monitoring of conductive fluids. It features adjustable response sensitivity, ON/OFF delay, and cascadable functionality, making it suitable for a wide range of industrial applications.

Product ModelCM-ENS.31P

Material Number1SVR740850R0300

Product ID85423

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Precise MonitoringThe CM-ENS.31P measures the electrical resistance of the liquid between two immersion electrodes and a reference electrode, providing precise monitoring of liquid levels.
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2. Adjustable SensitivityWith adjustable response sensitivity ranging from 0.1 to 1000 kΩ, the device can be tailored to meet specific application requirements, ensuring optimal performance in various conditions.
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3. ON/OFF DelayThe relay offers selectable ON/OFF delay, which helps prevent accidental tripping due to wave formation in a tank, ensuring reliable operation and minimizing false alarms.
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4. Cascadable DesignThe CM-ENS.31P is designed to be cascaded, allowing for the connection of multiple relays to handle complex monitoring tasks, making it an ideal solution for large-scale industrial applications.

Technical Specifications

Detailed engineering parameters based on manufacturer documentation

Specifications may be subject to change without notice

Parameter

Value

Parameter

Value

Product Net Width

22.5 mm

Product Net Height

85.6 mm

Product Net Depth / Length

103.7 mm

Product Net Weight

0.134 kg

Function

Filling or draining monitoring

Number of Electrodes

5. Versatile Power SupplyOperating with a wide range of power supply voltages (24-240 V AC/DC), the CM-ENS.31P is compatible with various electrical systems, providing flexibility in its deployment.

Time Range

0 s or 0.1 ... 30 s tripping delay (ON or OFF)

Rated Control Supply Voltage (Us)

24 ... 240 V AC/DC

Rated Frequency (f)

Supply Circuit 50/60 Hz

Output

2 c/o (SPDT) contacts

Terminal Type

Screwless Terminals

Rated Operational Current AC-12 (Ie)

(230 V) 4 A

Rated Operational Current AC-15 (Ie)

(230 V) 3 A

Rated Operational Current DC-12 (Ie)

(24 V) 4 A

Rated Operational Current DC-13 (Ie)

(24 V) 2 A

Minimum Switching Capacity

12 V 10 mA

Rated Impulse Withstand Voltage (Uimp)

Measuring Circuit / Output Circuit 4 kV Output Circuit 1 / Output Circuit 2 4 kV Supply Circuit / Measuring Circuit 4 kV Supply Circuit / Output Circuit 4 kV

Rated Insulation Voltage (Ui)

Measuring Circuit / Output Circuit 300 V Output Circuit 1 / Output Circuit 2 300 V Supply Circuit / Measuring Circuit 300 V Supply Circuit / Output Circuit 300 V

Degree of Protection

Housing IP50 Terminals IP20

Overvoltage Category

III

Pollution Degree

Short-Circuit Protective Devices

Output Circuit NC - F Type Fuses 6 A Output Circuit NO - F Type Fuses 10 A

Electrical Durability

AC-12 100000 cycle

Mechanical Durability

1000000 cycle

Connecting Capacity

Flexible with Ferrule 2x 0.5 ... 1.5 mmÂ² Flexible with Insulated Ferrule 2x 0.5 ... 1.5 mmÂ² Flexible 2x 0.5 ... 1.5 mmÂ² Rigid 2x 0.5 ... 1.5 mmÂ²

Tightening Torque

Control Circuit 0.9 NÂ·m Main Circuit 1 NÂ·m

Wire Stripping Length

8 mm Main Circuit 10 mm

Mounting Position

1 ... 5 1 ... 6

Mounting on DIN Rail

TH35-15 (35 x 15 mm Mounting Rail) acc. to IEC 60715 TH35-7.5 (35 x 7.5 mm Mounting Rail) acc. to IEC 60715

Standards

CAN/CSA C22.2 No.14 IEC/EN 63000 IEC/EN 60255-27 IEC/EN 61000-6-2 IEC/EN 61000-6-3 UL 508

Maximum Operating Voltage UL/CSA

Output Circuit 300 V AC

Contact Rating UL/CSA

B300

Connecting Capacity UL/CSA

Flexible 2x 18-16 AWG Rigid 2x 20-16 AWG

Pilot Duty UL/CSA

B300

Ambient Air Temperature

Operation -25 ... +60 Â°C Storage -40 ... +85 Â°C

Maximum Operating Altitude Permissible

Without Derating 2000 m

Object Classification Code

ETIM 7

EC001447 - (Fill) level monitoring relay

ETIM 8

EC001447 - (Fill) level monitoring relay

ETIM 9

EC001447 - (Fill) level monitoring relay

eClass

V11.0 : 27371813

UNSPSC

39122331

E-Number (Finland)

2712573

E-Number (Norway)

4189440

Manufacturer ID

1SVR740850R0300