ABB 1SVR740850R0200 Liquid Level Monitoring Relay - IP50
Part Number: 1SVR740850R0200
Quick Summary
Liquid level monitoring relays like the CM-ENS.21P provide reliable fill and drain monitoring for industrial tanks. Unplanned pump starts, overflow, and dry-running drive costly downtime and maintenance. It offers CE and UKCA declarations, UL/cULus listings, and CCC, along with DNV GL validation for critical projects. With a 24-240 V AC/DC supply and SPDT output, it supports reliable integration, reduces wiring complexity, and improves overall plant uptime and energy efficiency.
Product Information
Extended Description
1SVR740850R0200 ABB: The CM-ENS.21P 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 1 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. 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
4013614502866
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - Liquid level monitoring relays CM-ENS.2x
Instructions and Manuals
Instruction sheet - CM-ENS.xxx Liquid level monitoring relays | Installation instructions - CM-ENS.xxx Liquid level monitoring relays
CAD Dimensional Drawing
Information - 2D and 3D files for CAD systems
Product Net Width
22.5 mm
Product Net Height
85.6 mm
Product Net Depth / Length
103.7 mm
Product Net Weight
0.117 kg
Function
Filling or draining monitoring
Number of Electrodes
3
Measuring Range
0 | 1 ... 1000 kΩ
Rated Control Supply Voltage (Us)
24 ... 240 V AC/DC
Rated Frequency (f)
Supply Circuit 50/60 Hz
Output
1 c/o (SPDT) contact
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
3
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
Nr. Operations 1000000 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
Tightening Torque
Control Circuit 0.9 N·m | Main Circuit 1 N·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 °C | Storage -40 ... +85 °C
Maximum Operating Altitude Permissible
Without Derating 2000 m
Conflict Minerals Reporting Template (CMRT)
CMRT - Conflict Minerals Reporting Template
REACH Declaration
REACh Info for Electronic Relays and Controls
RoHS Information
RoHS Declaration of conformity for Electronic Relays and Controls
RoHS Status
Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019
SCIP
e92f5c82-09d2-4e1d-b75f-22be196f6fd6 Germany (DE)
Simplified SCIP
6da7c34c-ecbe-4b66-a93b-a292d5fb3601 Italy (IT) | fdf87af8-0bac-4dde-a041-46c79b663f74 Finland (FI) | 78e9d3a0-b6f8-466a-92dd-9d27f388a91e Germany (DE) | e25e35e7-082e-446f-acf4-b6f706ffc253 Norway (NO) | cb1ab279-7892-4e3a-9f71-63186c97b7cd Poland (PL) | 053f44f7-2bfa-4984-a2f7-079cd341f07f Belgium (BE) | 1814230c-8ca6-499d-81ae-e63fd5d5b87a Poland (PL) | e0252230-b847-4a30-8f2f-2fc5629ed8fe Germany (DE) | aaecb7ee-d826-46d9-bf00-17da03321ffb Croatia (HR) | d854c4ff-48db-4450-b9a7-7686ae3ca3f5 Germany (DE) | cd34d22e-bec6-4d60-bcce-2a8c768077ea Denmark (DK) | 201e499e-ee36-4f9d-875c-58840cea4b60 Czech Republic (CZ) | 4f6a9fa9-33da-4813-baa8-31ce71cad6c0 Poland (PL) | 6c8462f5-d890-4d79-92ff-07c1b58d1598 Portugal (PT) | c310c9d2-f423-44a1-906d-374a271873ef Greece (GR) | c38d5e4c-c8c7-4eea-be1a-d904ff9fe31b Netherlands (NL) | 548a9910-fa19-47ab-bd7a-8573bb7c848a Estonia (EE) | 49f4455c-b022-4dde-813a-65ffd24b2abf Hungary (HU) | a56b0ecb-5f7d-4505-9f0e-298d5aa05de2 Hungary (HU) | 3ca29d2e-2aea-47e8-8cb8-2cbdfc8d47d7 Belgium (BE) | c18ecde7-4887-45b0-b5df-9540eccd284e Spain (ES) | ef7490d0-23c5-418e-b012-1b6d7c0ecb52 Germany (DE) | 3c81904b-2110-4920-9b86-e2bc7528d57e Sweden (SE) | 734e6399-10a5-4571-a80f-5b59351fb595 Bulgaria (BG) | d4d5ca2b-bfdf-40b7-9257-3e784126538d France (FR) | b20387a5-b627-4a8f-a748-376620fdfec6 France (FR) | 72c38f45-8dcc-4bb4-9fb9-5dab2658077d Sweden (SE)
Toxic Substances Control Act - TSCA
Toxic Substances Control Act (TSCA) declaration for Electronic Relays and Controls
CQC Certificate
CQC Certificate, Liquid Level Monitoring Relays, CM-ENS.xxx, Made in Germany
cULus Certificate
cULus508_20150627-E140448
Declaration of Conformity - CCC
CCC Declaration of Conformity, Liquid Level Monitoring Relays, CM-ENS.xxx, Made in Germany
Declaration of Conformity - CE
EU Declaration of Conformity - CM-ENS.xxx Liquid level monitoring relay
Declaration of Conformity - UKCA
UK Declaration of Conformity - CM-ENS.xxx Liquid level monitoring relay
DNV GL Certificate
DNV GL Certificate - CM-ENS.xxx Liquid level monitoring relays
Package Level 1 Units
box 1 piece
Package Level 1 Width
97 mm
Package Level 1 Depth / Length
30 mm
Package Level 1 Height
109 mm
Package Level 1 Gross Weight
0.142 kg
Package Level 1 EAN
4013614502866
Object Classification Code
B
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)
2712572
E-Number (Norway)
4189439
Feature → Business Impact → Application: The CM-ENS.21P uses a three-electrode sensing configuration with front-face potentiometers to adjust sensitivity, enabling precise detection of conductive fluids and minimizing false triggers in challenging environments. This translates to fewer pump cycles and reduced wear in process tanks. Application: suitable for level control in industrial sumps and reservoirs where accurate fill/drain decisions impact process stability. Feature → Business Impact → Application: A broad rated control supply voltage of 24–240 V AC/DC and a 1 c/o SPDT output | 250 V / 4 A allows straightforward integration into existing control circuits and minimizes wiring changes. Application: ideal for retrofits and new lines that demand compact control modules with robust switching capability.
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FAQs
The CM-ENS.21P is designed for DIN rail mounting on TH35 profiles, supporting TH35-15 or TH35-7.5 rails. It uses screwless push-in terminals for fast, secure wiring and accepts flexible or rigid conductors (0.5–1.5 mm²). Recommended tightening is 0.9 N·m for control and 1 N·m for main circuits to ensure long-term reliability in industrial cabinets.
The device provides 1 c/o SPDT output with ratings of up to 4 A at 230 V AC for AC-12 and 3 A for AC-15, plus 4 A at 24 V DC for DC-12 and 2 A for DC-13. Minimum switching capacity is 12 V and 10 mA, with impulse withstand around 4 kV. These specifications support safe interlocks and reliable pump control.
Yes. The CM-ENS.21P is designed for conductive fluids and uses a measuring range of 0 to 1000 kΩ. With three electrodes, it provides stable level detection even in challenging conductivity conditions. Sensitivity is adjustable via front-face potentiometers to tailor performance to specific tank geometries and fluid properties.
The CM-ENS.21P carries CE and UKCA declarations, UL/cULus listings, CCC conformity, and additional certifications like DNV GL for critical projects. It also aligns with RoHS and REACH requirements, and can meet CAN/CSA safety standards. These certifications support global deployments and customer compliance programs.
By preventing dry running and tank overflow, CM-ENS.21P reduces pump wear and downtime, protecting downstream equipment and improving process reliability. Easy Connect push-in terminals shorten installation time, while 24-240 V AC/DC operation simplifies sourcing and stocking. The result is lower maintenance costs, faster commissioning, and better long-term total cost of ownership.