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- ABB 1SVR730830R0500 CM-ESS.MS Voltage Monitoring Relay 2 C/O 3-600V RMS 24-240VAC/DC 4A ABB 1SVR730830R0500 CM-ESS.MS Voltage Monitoring Relay 2 C/O 3-600V RMS 24-240VAC/DC 4A
ABB 1SVR730830R0500 CM-ESS.MS Voltage Monitoring Relay 2 C/O 3-600V RMS 24-240VAC/DC 4A
$145.86
- Description
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.
Technical Specifications
| Catalog Number | CM-ESS.MS |
| SKU | 1SVR730830R0500 |
| Brand | ABB |
| Series | CM Single-Phase Monitors |
| EAN / Barcode | 4016779852173 |
| Product Type | Voltage Monitoring Relay |
| Output Contacts | 2 C/O (2 changeover) |
| Measurement Voltage Range | 3–600 V RMS |
| Auxiliary / Coil Supply | 24–240 V AC/DC |
| Rated Current | 4 A |
| Mounting | DIN Rail (IEC 60715) |
| Width | 22.5 mm |
| Dimensions (W × H × D) | 22.5 × 85.6 × 103.7 mm |
| Weight | 0.176 kg |
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.