ABB 1SVR730794R1300 CM-PVS.31S 3-Phase Monitoring Relay 2 C/O 160-300V AC 4A 0.1-30s Three-phase Monitoring Relay

The ABB CM-PVS.31S three-phase monitoring relay (SKU: 1SVR730794R1300) is a compact, DIN-rail mounted relay designed to monitor three-phase supply voltages across all three lines (L1–L2–L3) in the range of 160–300V AC. Offering 2 changeover output contacts, an adjustable time delay of 0.1–30 seconds, and a rated current of 4A, the CM-PVS.31S provides reliable protection against phase loss, phase sequence errors, and voltage deviations in industrial control panels and automation systems.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — compliant for Great Britain market
• cULus: Certified by UL for both US (UL) and Canadian (CSA) markets
• UL 508: Industrial Control Equipment standard (UL)
• CCC: China Compulsory Certification
• CSA / CAN/CSA C22.2 No.14: Canadian Standards Association — Industrial Control Equipment
• IEC/EN 60255-27: Measuring relays and protection equipment — product safety requirements
• IEC/EN 63000: Technical documentation for assessment of electrical and electronic products with respect to restriction of hazardous substances
• IEC/EN 61000-6-2: Electromagnetic compatibility — immunity for industrial environments
• IEC/EN 61000-6-3: Electromagnetic compatibility — emission standard for residential, commercial, and light-industrial environments
• IEC 60715: Dimensions of low-voltage switchgear and controlgear — standardised mounting on rails
• REACH: Compliant with EU regulation on Registration, Evaluation, Authorisation and Restriction of Chemicals
• RoHS: Restriction of Hazardous Substances — free from restricted hazardous materials

Applications & Use Cases

• Protection of three-phase motors and equipment against phase loss and phase sequence faults
• Monitoring of three-phase supply voltage levels in industrial control panels
• Automation systems requiring reliable phase monitoring and fault signalling
• Building automation and HVAC systems with three-phase power supplies
• Pump and compressor protection in process industries