ABB 1SVR740850R2200 Liquid Level Monitoring Relay - CE/UL
Part Number: 1SVR740850R2200
Quick Summary
Liquid level monitoring relay protects pumps and tanks handling conductive fluids in industrial processes. Operators often face costly downtime from pump dry-running, overfills, or tank leaks when level sensors drift or fail. This ABB CM-ENS.23P device is certified for CE and UKCA in Europe, with UL/CSA and cULus options for North America, and DNV GL recognition for critical service. Its front-face potentiometers let you set the sensitivity across 0 to 1000 kΩ and configure a 1 c/o SPDT output to suit your control scheme. The unit uses Easy Connect technology with push-in terminals to simplify installation and maintenance, while a sealable transparent cover protects against tampering. In water treatment and chemical processing, this relay translates reliability into reduced maintenance costs and safer operations.
Product Information
Extended Description
1SVR740850R2200 ABB: The CM-ENS.23P belongs to the CM liquid level monitoring relay range. It operates with a rated control supply voltage of 110-130 V AC and 220-240 V AC 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
4013614502835
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
0.147 kg
Function
Filling or draining monitoring
Number of Electrodes
3
Measuring Range
0 | 1 ... 1000 kΩ
Rated Control Supply Voltage (Us)
110 ... 130 V AC | 220 ... 240 V AC
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
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
0.172 kg
Package Level 1 EAN
4013614502835
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)
2712575
E-Number (Norway)
4189442
Feature is the core capability of the CM-ENS.23P. Business Impact is the measurable value for operations, and Application describes where it fits. The 1 c/o SPDT output delivers reliable switching for pumps, valves, and alarms, reducing unscheduled downtime and enabling precise control of liquid handling in automated lines. The 110–130 V AC or 220–240 V AC supply range supports global deployments, minimizing the need for multiple variants in multi-site projects. With a measuring range of 0 to 1000 kΩ and three electrodes, the relay provides robust, repeatable detection of conductive liquid levels across complex tank geometries, improving first-pass commissioning and ongoing process stability. IP50 housing and IP20 terminals provide rugged enclosure protection in industrial environments, while the screwless/Push-in Easy Connect terminals cut wiring time by a measurable margin. Accessory electrodes and a sealable cover enhance tamper resistance and extend field service intervals, supporting maintenance efficiency in process industries such as water treatment, chemical processing, and food & beverage.
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FAQs
The device supports standard DIN rails TH35-15 and TH35-7.5, matching common European mounting standards. Mounting positions 1 to 5 or 1 to 6 provide flexible placement in control panels. Use the optional coordinate accessories for electrodes and the sealable cover to maintain tamper resistance in harsh environments.
The relay provides a measuring range from 0 to 1000 kΩ with three electrodes, enabling stable detection of conductive liquids across varied tank geometries. This configuration supports accurate level monitoring, reduces false alarms, and improves response consistency in pumps and overflow protection.
Yes. It is designed for conductive fluids and protects pumps from dry-running while preventing tank overflow. The front-face potentiometers allow on-site sensitivity adjustment, and the push-in Easy Connect terminals simplify wiring in tight panels typical of water treatment and chemical processing installations.
Key certifications include CE and UKCA for Europe, and UL/CSA with cULus options for North America. The device also references relevant standards such as IEC/EN 63000 and UL 508, supporting compliance across global automation projects and helping customers satisfy regulatory requirements for industrial controls.
Maintenance is reduced by Easy Connect wiring and a tamper-resistant sealable cover, which lowers service time during updates. Electrical durability (AC-12 up to 100,000 cycles) and mechanical durability (up to 1,000,000 cycles) translate into longer service intervals and lower lifecycle costs for pumps and level-control systems in process lines.