ABB 1SVR740850R2100 Liquid level monitoring relay - IP50 housing
Part Number: 1SVR740850R2100
Quick Summary
Liquid level monitoring relay is a robust ABB device that reliably detects conductive-fluid levels to protect pumps and tanks in industrial processes. The design acknowledges the real-world challenge of dry-running and overflow, which can cause costly downtime and equipment wear. It carries CE, UKCA, UL/cULus, CCC and DNV GL certifications to support global deployments while meeting strict safety and performance requirements. This solution complements broader automation strategies in process engineering and water/wastewater applications, delivering reliable sensing with easy installation. By combining precise sensitivity adjustment with durable construction, it supports continuous operation and predictable maintenance planning in demanding environments.
Product Information
Extended Description
1SVR740850R2100 ABB: The CM-ENS.13P 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 and works according to the open-circuit principle. 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
4013614502842
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - Liquid level monitoring relays CM-ENS.1x
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
0.145 kg
Function
Filling or draining monitoring
Number of Electrodes
3
Measuring Range
5 ... 100 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
0.17 kg
Package Level 1 EAN
4013614502842
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)
2712574
E-Number (Norway)
4189441
Feature → Business Impact → Application: The CM-ENS.13P uses a 1 c/o SPDT output rated at 250 V / 4 A, enabling simple pump control logic and reliable signaling for standard control circuits. This translates to lower wiring complexity and faster commissioning in industrial automation projects, especially for liquid-handling tanks and sumps. Application-wise, it excels in conductive-fluid monitoring where a simple open-circuit principle guards against overflow and dry-run events, reducing energy waste and mechanical wear. Feature → Business Impact → Application: Sensitivity is adjustable via front-face potentiometers across a 5 ... 100 kΩ range, allowing precise detection tailored to electrode configuration and fluid properties. This improves reliability across varying fluid conductivities and vessel geometries, making it suitable for chemical processing, food & beverage, and wastewater applications. Feature → Business Impact → Application: The device supports Easy Connect Technology with push-in terminals, improving installation speed and reducing connection errors. This results in faster maintenance cycles and increased uptime in critical pumping stations and bulk-liquid systems. Feature → Business Impact → Application: The CM-ENS.13P provides three electrodes and a sealable transparent cover as optional accessories, enabling versatile electrode arrangements and robust protection against tampering in sensitive environments. Feature → Business Impact → Application: Rated control supply voltages of 110–130 V AC or 220–240 V AC deliver flexibility for global installations, simplifying stock and reducing engineering changes for spare parts. Feature → Business Impact → Application: With DIN-rail mounting and compact dimensions (22.5 mm width, 85.6 mm height, 103.7 mm depth), it fits narrow control panels and supports standardized panel design across facilities. Feature → Business Impact → Application: The device is designed for conductive-fluid monitoring with a robust IP50 housing and IP20 terminal protection, improving resistance to dust and incidental contact in industrial environments. Feature → Business Impact → Application: Electrical and environmental durability (AC-12 up to 100,000 cycles; 1,000,000 mechanical cycles) underpin long service life, lowering total cost of ownership in demanding process lines. Feature → Business Impact → Application: Compliance with IEC/EN 63000, IEC/EN 60255-27, IEC/EN 61000-6 series, and UL 508 ensures compatibility with safety and EMC standards, easing regulatory clearance in global plants. Feature → Business Impact → Application: Narrow installation footprint and compatible with TH35 DIN rails (TH35-15 and TH35-7.5), enabling straightforward integration into existing control architectures and standard cabinets.
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FAQs
The CM-ENS.13P is designed for TH35 DIN rails (TH35-15 or TH35-7.5) with screwless terminals for fast, secure connections. Use 2x0.5 to 1.5 mm² conductors and tighten main/control circuit terminals to the specified torques. The device supports Easy Connect push-in terminals for quick maintenance and minimizes miswiring during field installations.
Key specs include rated control supply voltages of 110–130 V AC or 220–240 V AC, a 1 c/o (SPDT) output rated up to 4 A at 250 V, and minimum switching capacity of 12 V / 10 mA. Measuring range is 5 to 100 kΩ, optimized for conductive fluids. The unit meets IEC/EN and UL safety standards for reliable operation in industrial plants.
Yes. The CM-ENS.13P monitors liquid levels using an open-circuit principle and provides protection against dry-run and overflow. With adjustable sensitivity and a three-electrode configuration, it is well-suited for pumping systems and multi-tank setups where accurate level detection is critical to prevent damage and downtime.
The device carries CE and UKCA marks, plus UL/cULus, CCC, and DNV GL certifications, among others. It also aligns with CAN/CSA C22.2 No.14, IEC/EN 61000-6-2, and IEC/EN 61000-6-3, ensuring compliance for safety, EMC, and environmental requirements in international markets.
Expect reduced downtime due to reliable dry-run and overflow protection, lower maintenance overhead thanks to Easy Connect technology, and long life from electrical and mechanical durability (AC-12 100,000 cycles; 1,000,000 mechanical cycles). The combination supports predictable operation and return on investment in critical liquid-management applications.