Part number
1SVR730830R0500
Model no
CM-ESS.MS
$144.46 Low stock Dispatch Planned dispatch date. We aim to ship within 1 business day. Depending on warehouse workload it can take 2–3 business days. · From Türkiye
ABB 1SVR730830R0500 CM-ESS.MS Voltage Monitoring Relay 2 C/O 3-600V RMS 24-240VAC/DC 4A
  • CE
  • RoHS
  • UKCA
  • CCC
Documents 12 DatasheetEN · PDFData Sheet, Technical Information 2CDC112173D0201 ManualEN · PDFInstructions and Manuals 1SVC730710M1000All 12 documents ↓
CM single-phase monitors

ABB 1SVR730830R0500 CM-ESS.MS Voltage Monitoring Relay 2 C/O 3-600V RMS 24-240VAC/DC 4A

Ratings Full specification ↓
Rated current
4 A
Rated operational voltage
3–600 V AC
EAN
4016779852173
Description

About the CM-ESS.MS

The ABB CM-ESS.MS (SKU: 1SVR730830R0500) is a single-phase voltage monitoring relay designed for continuous supervision of AC and DC supply voltages across an exceptionally wide measurement range of 3–600 V RMS. Part of ABB's CM single-phase monitors series, this 2 C/O (2 changeover contact) relay provides reliable over- and under-voltage protection in control panels and industrial automation systems, with a coil supply voltage of 24–240 V AC/DC and a compact 22.5 mm DIN-rail footprint.

Certifications & Standards

  • CAN/CSA C22.2 No. 14: Canadian standard for industrial control equipment
  • IEC/EN 63000: Technical documentation for RoHS compliance assessment
  • IEC/EN 60255-27: Mechanical requirements for measuring relays and protection equipment
  • IEC/EN 61000-6-2: EMC immunity for industrial environments
  • IEC/EN 61000-6-3: EMC emission standard for residential and light industrial environments
  • UL 508: Standard for industrial control equipment (USA)
  • IEC 60715: DIN rail mounting dimensions for low-voltage switchgear
  • EN 60255: Measuring relays and protection equipment
  • EN 61000-6: Electromagnetic compatibility general standard
  • CSA: Canadian Standards Association certification
  • REACH: EU chemical safety regulation compliance
  • RoHS: Restriction of Hazardous Substances directive compliant
  • cULus: Dual USA and Canadian UL listing
  • CCC: China Compulsory Certification
  • CE: European conformity marking
  • UKCA: UK Conformity Assessed marking for Great Britain market

Applications & Use Cases

  • Over-voltage and under-voltage protection in control panels and distribution boards
  • Monitoring of single-phase AC supply lines from 3 V to 600 V RMS
  • DC bus voltage supervision in industrial automation and drives
  • Machine tool and process control cabinet protection
  • Building automation and HVAC power quality monitoring
  • Protection of sensitive industrial loads against supply voltage deviations

Frequently Asked Questions

What is the measurement voltage range of the CM-ESS.MS?
The CM-ESS.MS monitors voltages from 3 V to 600 V RMS, covering a very wide range suitable for both low-voltage signal circuits and standard 230/400 V mains supplies.

What supply voltage does the CM-ESS.MS require?
The relay operates on an auxiliary/coil supply of 24–240 V AC or DC, making it highly flexible for international applications without the need for separate power supplies.

How wide is the CM-ESS.MS for panel design purposes?
The relay has a standard 22.5 mm width and mounts on a DIN rail per IEC 60715, compatible with industry-standard enclosures and busbar systems.

Is the CM-ESS.MS approved for North American markets?
Yes. The CM-ESS.MS carries cULus listing (UL 508) and CAN/CSA C22.2 No. 14 certification, making it suitable for use in both the United States and Canada.

Specification

Full specification

66 values · Last verified 30 Oct 2026

Dimensions 4

Product Net Width 22.5 mm
Product Net Height 85.6 mm
Product Net Depth / Length 103.7 mm
Product Net Weight 0.154 kg

Technical 26

Function Over- or undervoltage monitoring
Measuring Range 3 ... 30 V, 6 ... 60 V, 30 ... 300 V, 60 ... 600 V
Time Range Tripping Delay (ON) 0 s
Rated Control Supply Voltage (Us) 24 ... 240 V AC/DC
Output 2 C/O (SPDT) Contacts, Operating Principle Selectable
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

Technical UL/CSA 6

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
Show all 66 specifications ↓ Show less ↑30 more values in Identification, Environmental, Material Compliance, External Classifications and Standards, Logistics.

Identification 10

Part number 1SVR730830R0500
Type designation CM-ESS.MS
Brand ABB
Condition New, factory sealed
Source ABB and its authorised distributors
Warranty Manufacturer warranty
EAN 4016779852173
eCl@ss 27371801
Minimum Order Quantity 1 piece
Customs Tariff Number 85364900

Environmental 2

Ambient Air Temperature Operation -20 ... +60 °C, Storage -40 ... +85 °C
Maximum Operating Altitude Permissible Without Derating 2000 m

Material Compliance 4

REACH Declaration 1SVD981001-4501
RoHS Declaration 1SVD981001-4401
RoHS Information Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019
Toxic Substances Control Act - TSCA 2CMT2023-006536

External Classifications and Standards 4

ETIM 7 EC001438 - Voltage monitoring relay
eClass V11.0 : 27371801
UNSPSC 39122332
E-Number (Sweden) 3860620

Logistics 10

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 0.176 kg
Package Level 1 EAN 4016779852173
Shipping weight 0.176 kg
Ships from Türkiye
Dispatch 12 Nov
Stock Low stock

Source: manufacturer data · Last verified: 30 Oct 2026

Documents

Documents for 1SVR730830R0500 12
Missing a document? Ask us
Certifications

Certifications and standards
  • CE
  • RoHS
  • UKCA
  • CCC
  • 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
Quick answers

Questions about the CM-ESS.MS

What is the rated current of CM-ESS.MS?

The rated current of CM-ESS.MS is 4 A.

Which supply voltage is CM-ESS.MS rated for?

The rated operational voltage of CM-ESS.MS is 3–600 V AC.

What is the HS code of CM-ESS.MS for customs?

The tariff (HS) code on file for CM-ESS.MS is 85364900.

What is the EAN of CM-ESS.MS?

The EAN (GTIN) of CM-ESS.MS is 4016779852173.

Where does CM-ESS.MS ship from, and how fast?

CM-ESS.MS ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.

Guides

Guides for monitoring relays
Technical

Schneider Zelio vs ABB CM: Monitoring Relay Comparison

A function-by-function comparison of Schneider Zelio Control and ABB CM monitoring relays covering three-phase supply, voltage, current, level, temperature, module width, and measurement method.

All guides for monitoring relays
Reviews

Customer reviews
Series

ABB CM single-phase monitors
Brand
ABB
Series
CM single-phase monitors
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