ABB 1SVR730830R0400 CM-ESS.2S Voltage Monitoring Relay 2 C/O 3-600V RMS 24-240VAC/DC

The ABB CM-ESS.2S (SKU: 1SVR730830R0400) is a single-phase voltage monitoring relay from the CM series, designed to continuously monitor AC or DC supply voltages across a wide measurement range of 3–600 V RMS. With dual changeover (2 C/O) output contacts and a supply voltage range of 24–240 VAC/DC, the CM-ESS.2S is engineered for reliable over- and under-voltage protection in demanding industrial control panel environments. Its compact 22.5 mm DIN rail profile makes it ideal for space-sensitive installations.

Technical Specifications

Certifications & Standards

• IEC/EN 63000: Technical documentation for electrical and electronic products with respect to restriction of hazardous substances
• IEC/EN 60255-27: Measuring relays and protection equipment — product safety requirements
• IEC/EN 61000-6: Electromagnetic compatibility (EMC) — generic standards for industrial environments
• IEC 60715: Dimensions of low-voltage switchgear and controlgear — DIN rail standardised mounting
• EN 63000: European harmonised standard for RoHS technical documentation
• EN 60255-27: European standard for measuring relays and protection equipment safety
• EN 61000-6: European EMC generic standard for industrial environments
• UL 508: Standard for industrial control equipment (USA)
• CSA C22.2 No.14: Canadian standard for industrial control equipment
• CSA: Canadian Standards Association certification
• REACH: Compliant with EU regulation on registration, evaluation, authorisation and restriction of chemicals
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• cULus: Combined UL (USA) and CSA (Canada) safety listing
• CCC: China Compulsory Certification for the Chinese market
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — meets Great Britain market requirements post-Brexit

Applications & Use Cases

• Over-voltage and under-voltage protection in industrial control panels
• Power supply monitoring in automation and process control systems
• Equipment protection in HVAC, pumping, and compressor installations
• DIN rail integration in MCC (Motor Control Centres) and distribution boards
• Wide-range voltage monitoring across AC and DC networks from 3 to 600 V RMS