ABB 1SVR740831R1400 Voltage Monitoring Relay - CE/UL Listed
Part Number: 1SVR740831R1400
Quick Summary
Voltage Monitoring Relay ABB 1SVR740831R1400 protects single-phase power feeds in automation panels by detecting undervoltage and overvoltage. In practice, many users battle nuisance trips from fluctuating supplies, which leads to unplanned downtime and equipment stress. This device carries CE marking and UL/CSA recognition, with IP50 housing suitable for harsh industrial environments. The combination of Easy Connect Technology, DIN-rail mounting, and adjustable thresholds delivers tangible business value by reducing maintenance interventions while safeguarding critical loads. With 220-240 VAC control supply and four RMS measuring ranges, it fits right into modern control panels demanding reliable supervision and fast commissioning.
Product Information
Extended Description
1SVR740831R1400 ABB: The CM-ESS.2P is a single-functional voltage monitoring relay from the CM single-phase monitors range. This monitoring relay operates with a rated control supply voltage of 220 - 240 V AC and has a 2 c/o (SPDT) output with contacts rated at 250 V / 4 A. It provides a RMS measuring principle for DC and AC voltages with 4 measuring ranges: 3-30 V, 6-60 V, 30-300 V and 60-600 V and works according to the open-circuit principle. The CM-ESS.2P is configurable for over- or undervoltage monitoring. The hysteresis is adjustable within a range of 3 to 30 % of the threshold value and the tripping delay is adjustable over a range of instantaneous to 30 s (0, 0.1-30 s). A sealable transparent cover for protection against unauthorized changes is available as accessory. The device offers maintenance free Easy Connect Technology with push-in terminals.
EAN
4016779852456
Minimum Order Quantity
1 piece
Customs Tariff Number
85364900
Data Sheet, Technical Information
Data sheet - CM-ESS.2P; CM-ESS.2S Voltage monitoring relays, single-phase AC/DC
Instructions and Manuals
Instruction Sheet / Manual - CM-ExS Single-phase voltage monitoring relays | Installation instructions - CM-ExS Single-phase voltage 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
0.17 kg
Function
Over- or undervoltage monitoring
Measuring Range
3 ... 30 V | 6 ... 60 V | 30 ... 300 V | 60 ... 600 V
Time Range
0 s or 0.1 ... 30 s tripping delay (ON)
Rated Control Supply Voltage (Us)
220 ... 240 V AC
Output
2 c/o (SPDT) contacts
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
24 V | 10 mA
Rated Impulse Withstand Voltage (Uimp)
Measuring Circuit / Output Circuit 6 kV | Output Circuit 1 / Output Circuit 2 4 kV | Supply Circuit / Measuring Circuit 6 kV | Supply Circuit / Output Circuit 4 kV
Rated Insulation Voltage (Ui)
Measuring Circuit / Output Circuit 600 V | Output Circuit 1 / Output Circuit 2 250 V | Supply Circuit / Measuring Circuit 600 V | Supply Circuit / Output Circuit 250 V
Degree of Protection
Housing IP50 | Terminals IP20
Overvoltage Category
III
Pollution Degree
3
Short-Circuit Protective Devices
Output Circuit NC - F Type Fuses 10 A | Output Circuit NO - F Type Fuses 10 A
Electrical Durability
AC-12 100000 cycle
Mechanical Durability
Nr. Operations 30000000 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
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
Flammability According to UL94
V-0
Ambient Air Temperature
Operation -20 ... +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
CB Certificate
CB_DK-28255-UL
CQC Certificate
CQC Certificate, Relays, CM-SRS.., CM-SFS.., CM-ESS..,CM-EFS.., CM-TCS.., Made in Germany
cULus Certificate
cULus508_20120203-E140448
Declaration of Conformity - CCC
CCC Certificate, Relays, CM-SRS.., CM-SFS.., CM-ESS..,CM-EFS.., CM-TCS.., Made in Germany
Declaration of Conformity - CE
EU Declaration of Conformity - CM-ExS.xxx, CM-SxS.xxx Single-phase current and voltage monitoring relays
Declaration of Conformity - UKCA
UK Declaration of Conformity - CM-ExS.xxx, CM-SxS.xxx Single-phase current and voltage monitoring relays
DNV GL Certificate
DVN Certificate - Voltage monitoring relays CM-EFS.x and CM-ESS.x with screw or push-in terminals
EAC Certificate
EAC Certificate - Measuring and monitoring relays CM-xxS.xxx and CM-xxN.xxx range in the new housing
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
0.193 kg
Package Level 1 EAN
4016779852456
Object Classification Code
B
ETIM 7
EC001438 - Voltage monitoring relay
ETIM 8
EC001438 - Voltage monitoring relay
ETIM 9
EC001438 - Voltage monitoring relay
eClass
V11.0 : 27371801
UNSPSC
39122332
E-Number (Finland)
2712249
E-Number (Norway)
4188089
E-Number (Sweden)
3860647
Feature: RMS voltage measurement across four ranges (3-30 V, 6-60 V, 30-300 V, 60-600 V) with open-circuit principle. Business Impact: Delivers accurate supervision for both AC and DC voltages, minimizing false trips and protecting sensitive loads. Application: Power supply monitoring in automation cabinets and motor control centers. Feature: 2 c/o SPDT outputs. Business Impact: Enables straightforward control logic with PLCs or relays, reducing external components and simplifying wiring. Application: Interlocks, alarms, and remote signaling in machine automation. Feature: Over- or undervoltage monitoring with adjustable hysteresis (3–30%) and tripping delay (0 s or 0.1–30 s). Business Impact: Tunable protection that lowers nuisance trips while ensuring timely shutoff in fault conditions. Application: Critical machine protection and process safety in demanding environments. Feature: 220-240 V AC rated control supply. Business Impact: Compatible with standard industrial mains, reducing power conversion needs and stock variety. Application: Panel-mounted supervision for electronics racks and drives. Feature: Easy Connect Technology with push-in/screwless terminals. Business Impact: Fast, maintenance-free wiring and reliable terminations, accelerating installation and service. Application: New builds and retrofits in control panels. Feature: DIN-rail mounting (TH35-15 or TH35-7.5) and compact footprint (22.5 mm width, 85.6 mm height, 103.7 mm depth). Business Impact: Space-efficient integration with existing DIN rail infrastructure, lower installation costs, and easier compliance checks. Application: Industrial control panels and cabinet assemblies. Feature: IP rating IP50 housing (terminals IP20). Business Impact: Enhanced protection against dust ingress and incidental contact, improving field reliability. Application: Harsh factory floors and enclosure-mounted installations. Feature: Wide operating range (-20 to +60 °C) and up to 2000 m altitude (without derating). Business Impact: Credible performance across diverse environments and geographies, reducing site-specific engineering. Application: Global deployments in manufacturing, packaging, and process industries. Feature: Certifications and standards alignment (CE, UL/CSA, UL 508, CAN/CSA, RoHS). Business Impact: Compliance-ready design reduces validation time and supports customer qualification workflows. Application: Regulatory compliance for electrical relays and controls in industrial automation.
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FAQs
Install on a standard TH35 rail (TH35-15 or TH35-7.5) using the optional DIN-rail mounting option. The device uses push-in/screwless terminals for fast, tool-free wiring. Ensure voltage supply is within 220-240 VAC and use 2x 0.5–1.5 mm² conductors as specified for a secure connection. Verify the protective cover is installed to prevent unwanted adjustments.
The CM-ESS.2P monitors RMS voltages in four ranges: 3-30 V, 6-60 V, 30-300 V, and 60-600 V. It is powered from 220-240 V AC and provides two SPDT (2 c/o) contacts rated up to 4 A at 230 V. This enables straightforward interfacing to PLCs or control circuits for supervision and interlocking applications.
Yes. The device features CE marking and UL/CSA recognition (cULus). It also aligns with key standards such as UL 508 and CAN/CSA C22.2 No. 14, supporting regulatory compliance in many regions. Additional certifications like CCC and UKCA are available on related models, enhancing global deployment options for industrial automation projects.
Trip delay is adjustable from 0 seconds to 0.1–30 seconds, and hysteresis ranges from 3% to 30% of the threshold. These settings reduce nuisance trips caused by transient voltage sags while ensuring prompt response to genuine faults. Proper configuration improves process reliability and protects critical loads without over-oscillating the control loop.
The CM-ESS.2P supports ambient temperatures from -20 to +60 °C and can operate up to 2000 m without derating. It mounts on DIN rails TH35-15 or TH35-7.5 and uses IP50 housing with IP20 terminals. For installation, plan for a clean enclosure, adequate ventilation, and secure mounting to minimize vibration effects in production environments.