ABB 1SAX611001R1101 EF370-380 Electronic Overload Relay 115...380A 3P

The ABB EF370-380 electronic overload relay (SKU: 1SAX611001R1101) delivers precise, reliable motor protection across a wide current range of 115 to 380 A in a compact 3-pole configuration. Designed for demanding industrial automation and control panel applications, the EF370-380 combines advanced electronic tripping technology with a robust mechanical design — making it an industry-standard choice for engineers specifying motor protection in heavy-duty installations.

Technical Specifications

Certifications & Standards

• ATEX: Certified for use in potentially explosive atmospheres (EU Directive 2014/34/EU)
• IECEx: International standard for equipment used in explosive atmospheres
• UL: Underwriters Laboratories certification for North American markets
• LR: Lloyd's Register type approval for marine and offshore applications
• RINA: Registro Italiano Navale certification for marine use
• RMRS: Russian Maritime Register of Shipping approval
• 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: Low-voltage switchgear and controlgear — comprehensive series
• IEC/EN 60947-5: Control circuit devices and switching elements
• IEC 60068-2: Environmental testing procedures for electronic and electrical components
• EN 60947-4: Contactors and motor starters — electromechanical contactors and motor starters
• EN 60947-5: Control circuit devices and switching elements — European standard
• EN 45555: General methods for the assessment of the ability to recover materials and energy from electrical and electronic equipment
• UL 2799: Standard for electrical systems of electric drive vehicles (UL listing)
• CSA: Canadian Standards Association certification for Canadian and North American markets
• RoHS: Restriction of Hazardous Substances — compliant with EU Directive 2011/65/EU
• REACH: Registration, Evaluation, Authorisation and Restriction of Chemicals (EU regulation)
• WEEE: Waste Electrical and Electronic Equipment Directive compliance
• CCC: China Compulsory Certification for the Chinese market
• CE: Conformité Européenne — meets EU safety, health, and environmental requirements
• UKCA: UK Conformity Assessed marking for Great Britain market access
• EAC: Eurasian Conformity mark for the Eurasian Economic Union

Applications & Use Cases

The ABB EF370-380 electronic overload relay is engineered for motor protection in high-current industrial environments. Typical applications include heavy-duty motor starters in manufacturing plants, process automation systems, pump and compressor control panels, marine and offshore electrical installations, and any control panel requiring reliable overload protection up to 380 A. Its broad certification portfolio — spanning ATEX, IECEx, UL, LR, RINA, CE, UKCA, and EAC — ensures global deployment flexibility across European, North American, Asian, and maritime markets.