ABB 1SAX821001R1101 EF750-800 Electronic Overload Relay 250-800A 3P 144x270x250mm

The ABB EF750-800 electronic overload relay (SKU: 1SAX821001R1101) delivers advanced motor protection across a wide current range of 250 to 800A, making it an ideal solution for heavy-duty industrial automation and control panel applications. Part of the ABB EF750 series, this 3-pole electronic overload relay combines precise trip characteristics with robust construction — engineered for demanding environments where reliable motor protection is non-negotiable.

Technical Specifications

Certifications & Standards

• ATEX: Certified for use in explosive atmospheres (European Directive 2014/34/EU)
• IECEx: International certification for equipment used in explosive atmospheres
• RINA: Italian Naval Register type approval for marine and offshore applications
• RMRS: Russian Maritime Register of Shipping approval
• UL: Underwriters Laboratories listed — North American safety standard compliance
• IEC 60947-1: Low-voltage switchgear and controlgear — general rules
• EN 60947-1: European harmonised standard for low-voltage switchgear — general rules
• IEC/EN 60947: Comprehensive low-voltage switchgear and controlgear standard family
• IEC 60068-2: Environmental testing standard for robustness and climatic endurance
• EN 60947-4: Contactors and motor starters — electromechanical contactors and motor starters
• EN 60947-5: Control circuit devices and switching elements
• CSA: Canadian Standards Association approval for North American markets
• RoHS: Restriction of Hazardous Substances — EU Directive 2011/65/EU compliant
• REACH: EU chemical safety regulation compliance (ECHA SVHC)
• WEEE: Waste Electrical and Electronic Equipment Directive compliance
• CCC: China Compulsory Certification for the Chinese market
• CE: European Conformity marking — meets all applicable EU directives
• UKCA: UK Conformity Assessed marking for Great Britain market access
• EAC: Eurasian Conformity mark for the Eurasian Economic Union

Applications & Use Cases

The ABB EF750-800 electronic overload relay is designed for protecting large industrial motors in applications including compressors, pumps, fans, conveyors, and heavy processing machinery. Its wide 250–800A adjustment range makes it highly versatile across variable load profiles in industrial automation, marine installations, oil and gas facilities, and utility substations. Procurement engineers specifying motor protection for MCC panels or standalone motor starters will find the EF750-800 compliant with international standards and suitable for global deployment.