ABB 1SVR730831R0400 Voltage monitoring relay - 2 c/o SPDT contacts
Part Number: 1SVR730831R0400
Quick Summary
Voltage monitoring relay protects single-phase control circuits in industrial panels by detecting undervoltage and overvoltage conditions, enabling fast protective actions. In real-world deployments, setpoint drift and unauthorized reconfiguration can lead to unexpected trips and downtime. This ABB device carries CE, UL/CSA, and UKCA markings, plus robust IP50 housing, supporting safe operation in tough industrial environments. With screw terminals and DIN-rail mounting, it integrates seamlessly into existing automation architectures, delivering reliable protection while helping to meet regulatory requirements and uptime targets. Optimized for modern control cabinets, it pairs well with energy-management initiatives and remote diagnostics to maximize equipment availability and efficiency.
Product Information
Extended Description
1SVR730831R0400 ABB: The CM-ESS.2S 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 110 - 130 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.2S 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 screw connection technology with double-chamber cage connection terminals.
Country of Origin
Switzerland (CH)
Lead Time
0 day
Made To Order
No
Product Sales Status
Active
Quote Only
No
Stocked At Warehouses
CHABB001EXPU
Warranty Return
Product under warranty must be returned
Lead Time
21 day
Made To Order
No
Product Sales Status
Active
Quote Only
No
Stocked At Warehouses
USSVCEXPU
Warranty Return
Product under warranty must be returned
EAN
4016779852197
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
0.181 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)
110 ... 130 V AC
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
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 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
Wire Stripping Length
8 mm
Recommended Screw Driver
0.8 x 4 | 4.5 | Pozidriv 1
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 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
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
0.204 kg
Package Level 1 EAN
4016779852197
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)
2712251
E-Number (Norway)
4188086
E-Number (Sweden)
3860622
The CM-ESS.2S voltage monitoring relay uses four RMS measuring ranges (3-30 V, 6-60 V, 30-300 V, 60-600 V) to cover diverse single-phase supplies, reducing the risk of nuisance trips and enabling precise configuration for different machines. Feature → Business Impact → Application: four-range measurement enables a single device to protect a wide variety of equipment without aftermarket changes, lowering spare-part inventories and simplifying panel design for machine builders. The 2 c/o SPDT outputs provide flexible control logic to drive contactors or relays, supporting safe shutdown strategies and independent fault signaling in complex automation lines. The adjustable hysteresis (3–30%) and tripping delay (0 s or 0.1–30 s) minimize unwanted switching while ensuring prompt response to genuine faults in conveyors, pumps, and processing lines. Durable screw-terminal connections and DIN-rail mounting (TH35 series) offer quick installation, secure wiring, and easy replacement during maintenance windows. The unit’s environmental and electrical ratings — IP50 housing, 600 V insulation, and UL/CSA/CE compliance — provide confidence for panel builders designing for safety and regulatory adherence. Industry-grade certifications, RoHS/REACH compliance, and broad mounting compatibility translate into lower risk during audits and faster project approvals. The compact form factor and standardized dimensions streamline enclosure planning and cabling strategies, enabling scalable deployment across multiple stations and machines in a plant.
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FAQs
This device is designed for DIN rail mounting on TH35 profiles (TH35-15 or TH35-7.5). Use standard DIN-rail clips and secure the unit vertically to ensure proper venting and easy access to screw terminals during wiring.
It covers four RMS measuring ranges: 3-30 V, 6-60 V, 30-300 V, and 60-600 V. This wide range allows a single relay to protect multiple machines and supply configurations, reducing part diversity and simplifying commissioning across panels.
The unit provides 2 c/o SPDT contacts rated at 250 V / 4 A. It supports a tripping delay from 0 s to 0.1-30 s and adjustable hysteresis from 3% to 30%, enabling stable operation with minimum nuisance trips in variable-load environments.
The device carries CE, UL/CSA (including cULus), and UKCA markings, along with RoHS/REACH declarations and other regional certifications, supporting compliance across European and North American panels and reducing audit friction.
Key factors include IP50 housing with IP20 terminal protection, screw-terminal wiring for secure connections, and rugged DIN-rail mounting. Combined with adjustable thresholds and delays, these features minimize downtime, lower maintenance costs, and improve equipment availability in high-demand facilities.