CM-MPS.31S

Name: CM-MPS.31S
Brand: ABB
SKU: CM-MPS.31S

The CM-MPS.31S is a multifunctional three-phase monitoring relay designed to monitor phase sequence, phase failure, over- and undervoltage, and phase unbalance. It ensures reliable electrical system operation with precise adjustment and tool-free mounting.

Product ModelCM-MPS.31S

Material Number1SVR730884R1300

Product ID84831

Stock on Request

Last updated: 8/29/2026

Quantity

Key Features

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1. Advanced Monitoring FeaturesThe CM-MPS.31S monitors phase sequence, phase failure, over- and undervoltage, and phase unbalance, providing comprehensive protection for your electrical system.
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2. Precise AdjustmentWith front-face operating controls, you can precisely adjust the relay to meet your specific monitoring needs, ensuring optimal performance.
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3. Tool-Free MountingThe relay features tool-free mounting on DIN rail, making it easy to install and demount without any hassle.
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4. High Fire Protection ClassificationThe housing material is classified as UL 94 V-0, ensuring the highest level of fire protection for your electrical equipment.
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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

0.142 kg

Function

Phase failure detection Phase sequence monitoring Over- and undervoltage monitoring Phase unbalance detection

Measuring Range

(L-L) 160 ... 300 V AC

5. Reliable OperationDesigned for 100% duty cycle, the CM-MPS.31S ensures continuous reliable operation in demanding electrical environments.

Time Range

200 ms start-up delay 0 s or 0.1 ... 30 s tripping delay (ON or OFF)

Rated Control Supply Voltage (Us)

(L-L) 160 ... 300 V AC

Rated Frequency (f)

Supply Circuit 50/60 Hz

Output

2 c/o (SPDT) contacts

Terminal Type

Screw 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

24 V 10 mA

Rated Impulse Withstand Voltage (Uimp)

Input Circuit 6 kV Output Circuit 4 kV

Rated Insulation Voltage (Ui)

Input Circuit / Output Circuit 600 V Output Circuit 1 / Output Circuit 2 300 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

30000000 cycle

Connecting Capacity

Flexible with Ferrule 1x 0.5 ... 2.5 mmÂ² Flexible with Ferrule 2x 0.5 ... 1.5 mmÂ² Flexible with Insulated Ferrule 1x 0.5 ... 2.5 mmÂ² Flexible with Insulated Ferrule 2x 0.5 ... 1.5 mmÂ² Flexible 1x 0.5 ... 2.5 mmÂ² Flexible 2x 0.5 ... 1.5 mmÂ² Rigid 1x 0.5 ... 4 mmÂ² Rigid 2x 0.5 ... 2.5 mmÂ²

Tightening Torque

0.6 ... 0.8 NÂ·m

Wire Stripping Length

8 mm

Recommended Screw Driver

0.8 x 4 4.5 Pozidriv 1

Mounting Position

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 1x 18-14 AWG Flexible 2x 18-16 AWG Rigid 1x 20-12 AWG Rigid 2x 20-14 AWG

Tightening Torque UL/CSA

7.08 inÂ·lb

Pilot Duty UL/CSA

B300

Flammability According to UL94

V-0

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

EC001441 - Phase monitoring relay

ETIM 8

EC001441 - Phase monitoring relay

ETIM 9

EC001441 - Phase monitoring relay

eClass

V11.0 : 27371803

UNSPSC

39122332

E-Number (Finland)

2712276

E-Number (Norway)

4188134

E-Number (Sweden)

3860586

Manufacturer ID

1SVR730884R1300