CM-ENS.31P 1SVR740850R0300 ABB CM-ENS.31P Liquid level monitoring relay 2c/o, sensitivity 0.1-1000kOhm View larger
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CM-ENS.31P 1SVR740850R0300 ABB CM-ENS.31P Liquid level monitoring relay 2c/o, sensitivity 0.1-1000kOhm




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CM-ENS.31P Liquid level monitoring relay 2c/o, sensitivity 0.1-1000kOhm

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Electric Relays Switch

Electronic relays


* Brand new product in its original packaging covered by the warranties and certifications provided by ABB

*This price is per unit and is the net value (not including taxes if applicable).

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The CM-ENS.31P belongs to the CM liquid level monitoring relay range. It operates with a rated control supply voltage of 24 - 240 V AC/DC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It monitors liquid levels of conductive fluids and protects pumps against dry running or tanks against overflow. The working principle as well as the sensitivity can be selected via front-face potentiometers. Furthermore, an ON-delay or an OFF-delay can be adjusted within a range of 0.1 to 10 s. Several electrodes and a sealable transparent cover for protection against unauthorized changes are available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals.


  • EAN:
  • Minimum Order Quantity:
    1 piece
  • Customs Tariff Number:


  • Product Net Width:
    22.5 mm
  • Product Net Height:
    85.6 mm
  • Product Net Depth:
    103.7 mm
  • Product Net Weight:
    0.134 kg

Container Information

  • Package Level 1 Units:
    1 piece
  • Package Level 1 Width:
    97 mm
  • Package Level 1 Height:
    109 mm
  • Package Level 1 Length:
    30 mm
  • Package Level 1 Gross Weight:
    0.159 kg


  • Function:
    Filling or draining monitoring
  • Rated Control Supply Voltage (Us):
    24 ... 240 V AC/DC
  • Output:
    2 c/o (SPDT) contacts
  • Time Range:
    0 s or 0.1-30 s tripping delay (ON or OFF)
  • 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 Insulation Voltage (Ui):
    300 V
  • Rated Impulse Withstand Voltage (Uimp):
    4 kV
  • Degree of Protection:
    Housing IP50
    Terminals IP20
  • Overvoltage Category:
  • 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
  • Connecting Capacity:
    Flexible with Ferrule 2x 0.5 ... 1.5 mm²
    Flexible with Insulated Ferrule 2x 0.5 ... 1.5 mm²
    Flexible 2x 0.5 ... 1.5 mm²
    Rigid 2x 0.5 ... 1.5 mm²
  • Wire Stripping Length:
    8 mm
  • Mounting Position:
  • 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:
    IEC/EN 60255-1
    IEC/EN 60255-27
    IEC/EN 60947-5-1


  • Ambient Air Temperature:
    Operation -25 ... +60 °C
    Storage -40 ... +85 °C
  • RoHS Status:
    Following EU Directive 2011/65/EC

Technical UL/CSA

  • Maximum Operating Voltage UL/CSA:
    Output Circuit 300 V AC
  • Contact Rating UL/CSA:
  • Connecting Capacity UL/CSA:
    Flexible 2x 18 ... 16 AWG
    Rigid 2x 20 ... 16 AWG

Certificates and Declarations (Document Number)


  • Object Classification Code:
  • ETIM 5:
    EC001447 - (Fill) level monitoring relay
  • eClass:
    7.0 27371813

Datasheet - PDF

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