ABB 1SVR730794R3300 CM-PVS.41S Three-Phase Monitoring Relay 2 C/O 300-500V AC 4A 0.1-30s Phase Sequence Voltage

The ABB CM-PVS.41S (SKU: 1SVR730794R3300) is a three-phase monitoring relay designed to protect industrial equipment from phase faults including phase loss, phase sequence errors, and voltage asymmetry across a wide input range of 300–500 V AC. Part of ABB's CM series, the CM-PVS.41S features a dual changeover (2 C/O) output contact, an adjustable time delay of 0.1 to 30 seconds, and a compact 30 mm wide housing suited for DIN rail installation in control panels and motor protection circuits.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed — meets Great Britain market requirements
• cULus: UL/CSA dual certification for US and Canadian markets
• UL 508: UL standard for industrial control equipment
• CAN/CSA C22.2 No.14: Canadian Standards Association industrial control equipment standard
• CCC: China Compulsory Certification for the Chinese market
• IEC/EN 60255-27: Measuring relays and protection equipment — product safety
• 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 — generic immunity standard for industrial environments
• IEC/EN 61000-6-3: Electromagnetic compatibility — generic emission standard for residential environments
• IEC 60715: Dimensions of low-voltage switchgear and controlgear — standardised mounting on rails
• REACH: EU regulation on Registration, Evaluation, Authorisation and Restriction of Chemicals
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU

Applications & Use Cases

• Motor protection against phase loss, phase sequence reversal, and voltage unbalance in three-phase systems
• Protection of pumps, compressors, and HVAC systems operating on 300–500 V AC three-phase networks
• Industrial automation control panels requiring phase integrity monitoring
• Building management systems and critical infrastructure where phase faults must be detected and isolated rapidly
• OEM machine builders integrating compact DIN-rail-mountable protection relays into motor starter assemblies

Frequently Asked Questions

What faults does the CM-PVS.41S detect?

The CM-PVS.41S monitors three-phase supplies for phase loss, incorrect phase sequence, and voltage outside the rated 300–500 V AC window, triggering its 2 C/O output contacts after the set time delay.

What is the adjustable time delay range?

The time delay is adjustable from 0.1 to 30 seconds, allowing coordination with downstream protective devices and preventing nuisance tripping during brief supply disturbances.

Is the CM-PVS.41S suitable for DIN rail mounting?

Yes. At 30 mm wide and compliant with IEC 60715, the CM-PVS.41S mounts directly onto standard 35 mm DIN rails.

Which markets is this relay approved for?

The CM-PVS.41S carries CE, UKCA, cULus (UL 508 / CSA C22.2 No.14), and CCC certifications, making it suitable for European, UK, North American, and Chinese markets.