ABB 1SAX351001R1101 EF146-150 Electronic Overload Relay 54-150A 3P 160x107x97mm

The ABB EF146-150 electronic overload relay (SKU: 1SAX351001R1101) delivers precise motor protection across a wide current range of 54 to 150A in a compact 3-pole design. Part of the proven EF146 series, the EF146-150 is engineered for demanding industrial automation and control panel applications where reliable overload detection is critical. Weighing just 0.984 kg and measuring 160 x 107 x 97 mm, it integrates seamlessly into motor protection assemblies.

Technical Specifications

Certifications & Standards

• ATEX: Certified for use in explosive atmospheres (EU Directive 2014/34/EU)
• IECEx: International certification for equipment used in explosive atmospheres
• UL: Underwriters Laboratories listing for North American market compliance
• LR: Lloyd's Register type approval for marine and offshore applications
• RINA: Registro Italiano Navale certification for marine installations
• RMRS: Russian Maritime Register of Shipping certification
• IEC/EN 60947-1: General rules for low-voltage switchgear and controlgear
• IEC/EN 60947-4: Contactors and motor-starters standard compliance
• IEC/EN 60947-5: Control circuit devices and switching elements standard
• IEC 60068-2: Environmental testing standard for climatic and mechanical durability
• EN 60947-1: European harmonised standard for low-voltage switchgear (general rules)
• EN 60947-4: European harmonised standard for contactors and motor-starters
• EN 60947-5: European harmonised standard for control circuit devices
• EN 45555: General methods for the assessment of the ability to recover materials and energy from electrical and electronic products
• UL 2799: Standard for Electrical Systems for Stationary Fuel Cell Power Systems
• CSA: Canadian Standards Association certification for North American compliance
• RoHS: Restriction of Hazardous Substances Directive compliance (EU 2011/65/EU)
• REACH: Registration, Evaluation, Authorisation and Restriction of Chemicals compliance
• 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 marking for the Eurasian Economic Union

Applications & Use Cases

The EF146-150 is the preferred electronic overload relay for high-current motor protection in industrial automation, manufacturing plants, pump stations, compressor systems, and HVAC equipment. Its broad adjustment range (54–150A) makes it suitable for a wide variety of motor sizes without requiring a relay change, reducing spare-parts inventory. The relay's electronic sensing technology provides class-leading trip accuracy, phase-loss sensitivity, and thermal memory — essential for protecting high-value motors in continuous-duty industrial environments. Its international certification portfolio (ATEX, IECEx, UL, CCC, EAC, UKCA, CE) makes the EF146-150 the go-to choice for global projects and export-controlled installations.