ABB 1SVR730850R0300 Liquid level monitoring relay - CE UL
Part Number: 1SVR730850R0300
Quick Summary
The ABB 1SVR730850R0300 liquid level monitoring relay detects conductive-fluid levels to protect pumps and tanks. In busy industrial settings, dry-run damage and tank overflows drive costly downtime and maintenance. It carries CE, UKCA, and UL/CSA certifications, reinforcing its suitability for global installations, while its IP50 housing and rugged screw-terminal design suit harsh environments. With front-face potentiometers for sensitivity and adjustable ON/OFF delays, commissioning is fast and tamper-resistant. Designed for industrial automation, it integrates with existing control circuits and DIN-rail mounting, delivering reliable sensing, easy calibration, and long-term cost savings through safer, more efficient liquid handling.
Product Information
Extended Description
1SVR730850R0300 ABB: The CM-ENS.31S 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 screw connection technology with double-chamber cage connection terminals.
EAN
4013614502910
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - Liquid level monitoring relays CM-ENS.31
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
0.143 kg
Function
Filling or draining monitoring
Number of Electrodes
3
Measuring Range
0 | 1 ... 1000 kΩ
Time Range
0 s or 0.1 ... 30 s tripping delay (ON or OFF)
Rated Control Supply Voltage (Us)
24 ... 240 V AC/DC
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
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 1x 0.5 ... 2.5 mm² | Flexible with Ferrule 2x 0.5 ... 1.5 mm² | Flexible with Insulated Ferrule 1x 0.5 ... 2.5 mm² | Flexible with Insulated Ferrule 2x 0.5 ... 1.5 mm² | Flexible 1x 0.5 ... 2.5 mm² | Flexible 2x 0.5 ... 1.5 mm² | Rigid 1x 0.5 ... 4 mm² | Rigid 2x 0.5 ... 2.5 mm²
Tightening Torque
0.6 ... 0.8 N·m | Control Circuit 0.9 N·m | Main Circuit 1 N·m
Wire Stripping Length
8 mm | Main Circuit 10 mm
Recommended Screw Driver
0.8 x 4 | 4.5 | Pozidriv 1
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 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 in·lb
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
caf0b68d-c966-42e1-a8fa-d9203618300c Germany (DE)
Simplified SCIP
07adcee4-df2f-4c7d-9f20-255738ec6f58 Germany (DE) | a2cc42ac-18d7-43b0-8be8-957e7d219a90 Bulgaria (BG) | 34400e2c-a222-4f59-8cef-ca15c13cb57d Poland (PL) | e1e6146d-4669-4e95-8168-45e9fad1b553 Croatia (HR) | a16fc8b2-5e69-4755-820f-413e486d2ca9 Germany (DE) | 7cb0dc3b-b122-4224-8058-5c7f4b297f91 Denmark (DK) | e84f4dca-6dbe-40df-968b-0003a9e3466a Czech Republic (CZ) | 5981233e-e655-423f-b13f-3834a3827264 Poland (PL) | 6f9d8a0b-2b07-4e15-aa8c-b889fa5b3292 Portugal (PT) | f0f2d57d-06ae-4598-94f8-402b5ed76c5f Netherlands (NL) | 4f686a13-3a15-4b1d-993e-484cf71ad0b6 Estonia (EE) | f358c8a7-1587-40ef-89e0-3700eaece314 Sweden (SE) | e11c13ec-233c-4974-92b8-14e9925c1dcd Spain (ES) | 4302e289-dd89-4572-9d68-b15cf2ddb528 Hungary (HU) | cf4041ba-bed4-4a0c-a9e5-7062ff3b7ae0 Belgium (BE) | 630d3c65-1721-4ec4-96fe-66b207a8a5b4 Sweden (SE) | 168fc025-98c4-48eb-bb56-ec3650ac5e79 France (FR) | 31c271b6-d3b5-47de-9dc8-7bd269a19374 France (FR) | ae1465c6-cd07-4b4f-aab0-decb680918f9 Hungary (HU) | d348b9d0-b96a-4c58-9543-9ebb41a9949f Greece (GR) | 94ff343e-95ca-47fb-90f8-3cc17f5b9827 Italy (IT) | 9221ace2-fe48-4d82-8f4d-2613de30c1ec Germany (DE) | 2c9c1e34-9891-4b3d-8d0b-cdc1060a14a4 Belgium (BE) | be63cbb6-4dc8-4ad9-ac62-1d174c9b37fe Poland (PL) | ffffc28f-7881-42d0-a55e-6dc8a9548a6e Norway (NO) | f96fa66a-8282-4bff-bc3d-a2923681e429 Germany (DE) | 0218b18b-6c6c-499e-b22f-786f2ec9313c Finland (FI)
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
0.168 kg
Package Level 1 EAN
4013614502910
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)
2712568
E-Number (Norway)
4189435
Feature: Wide operating range and versatile outputs. Benefit: Enables use across a broad set of conductive fluids and control schemes without swapping hardware, reducing spare-part inventory and installation time. Application: Pump protection and overflow prevention in process lines and storage tanks. Feature: High sensing precision with adjustable sensitivity. Business impact: Tailors detection to exact conductivity of fluids, minimizing false trips and optimizing pump cycles for energy efficiency. Application: Level control in mixed tanks and low-conductivity scenarios where precise thresholding matters. Feature: Front-face adjustment for sensitivity and delay (0.1 to 30 seconds). Business impact: Fast commissioning and remote retraining of setpoints without opening enclosures, reducing maintenance windows. Application: Rapid adaptation to seasonal product changes in manufacturing or batching processes. Feature: 3-electrode configuration with 2 SPDT contacts. Business impact: Flexible interlock and control configurations support complex safety interlocks and interlocking schemes, reducing wiring complexity. Application: Multi-point monitoring in tank farms and bulk-fluid systems. Feature: Rugged DIN-rail mounting and screw-terminal connectivity. Business impact: Simplifies installation, improves reliability, and eases field servicing with compatible conductor sizes and secure connections. Application: Panel-ready integration into standard automation cabinets and control panels. Feature: Compliance and durability. Business impact: Meets CE/UL/CSA and UKCA standards while delivering IP50 protection and robust electrical durability, lowering compliance risk and lifecycle costs. Application: Global installations in regulated industries, including food-grade and chemical processing when used with proper accessories.
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FAQs
The CM-ENS.31S is designed for DIN-rail mounting (TH35-15 or TH35-7.5) and uses screw terminals for secure wiring. It supports flexible conductor sizes and features a front-access adjustment interface, which simplifies onboarding in existing control panels. This makes upgrading legacy level sensors straightforward without significant panel rework or rewiring, reducing installation time and risk of wiring errors.
Key ratings include a rated control supply voltage of 24–240 V AC/DC and a 2 c/o SPDT output. The device supports 230 V AC loads with up to 4 A (I_e) in AC-12, and 24 V DC loads with up to 4 A. It uses three electrodes for sensing, with a measuring range of 0–1000 kΩ and sensitivity adjustable from 0.1 to 1000 kΩ. Delays can be set from 0.1 to 30 s for ON or OFF operations.
Yes. The CM-ENS.31S is specifically designed for filling or draining monitoring and dry-run protection of pumps handling conductive liquids. With 2 SPDT contacts and adjustable sensitivity, it reliably triggers pump shutoff or interlocks when liquid levels reach setpoints, helping prevent pump damage and tank overflow in challenging process environments.
The device carries CE and UKCA markings and UL/CSA certifications, along with CCC and other regional declarations. It also meets IEC/EN standards referenced in its technical specs and UL 508 for industrial control equipment. These certifications support compliance in global installations and streamlined procurement for regulated industries.
The CM-ENS.31S reduces maintenance by providing front-face adjustments to avoid enclosure openings, tamper-resistant covers, and durable screw-terminal connections. Its long electrical and mechanical durability (high cycle counts) lowers replacement frequency, while improved pump protection reduces energy waste and downtime, delivering measurable ROI through lower operating costs and safer, more reliable liquid handling.