ABB 1SVR550824R9100 CM-PFE Phase Sequence Monitoring Relay 1C/O 208-440V AC

The ABB CM-PFE (SKU: 1SVR550824R9100) is a phase sequence monitoring relay designed to protect three-phase electrical systems from phase sequence faults and asymmetry. Operating across a rated voltage range of 208–440V AC on lines L1, L2, and L3, the CM-PFE provides a single changeover (1C/O) output contact for reliable integration into control panels and industrial automation systems. Compact at just 22.5 × 78 × 78.5 mm and weighing 68 g, it suits DIN-rail mounting in space-constrained enclosures.

Technical Specifications

Certifications & Standards

• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed marking for Great Britain market compliance
• CCC: China Compulsory Certification for the Chinese market
• UL 508: UL standard for industrial control equipment (listed as UL508)
• CSA: Canadian Standards Association certification
• 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 the restriction of hazardous substances
• IEC/EN 61000-6: Electromagnetic compatibility (EMC) — generic standards for emission and immunity
• IEC 60715: Dimensions of low-voltage switchgear and controlgear — standardized DIN rail mounting
• EN 60255-27: European harmonised measuring relays and protection equipment safety standard
• EN 63000: European harmonised standard for RoHS technical documentation
• EN 61000-6: European EMC generic emission and immunity standard
• 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

• Protection of three-phase motors and pumps against incorrect phase sequence at start-up
• Prevention of equipment damage caused by reversed phase rotation in industrial drives
• Integration into control panels, motor control centres (MCCs), and automation cabinets
• Building automation and HVAC systems requiring phase sequence supervision
• Food & beverage, water treatment, and manufacturing plant electrical protection