ABB 1SAX721001R1101 EF460-500 150-500A 3P Electronic Overload Relay

The ABB EF460-500 (SKU: 1SAX721001R1101) is a 3-pole electronic overload relay rated for 150 to 500 A, designed for reliable motor protection in demanding industrial automation environments. Part of the ABB EF460 series, the EF460-500 delivers precise overload detection and tripping to safeguard motors and downstream equipment in control panels and distribution systems. Weighing 1.554 kg, it is built for robust, long-term service in heavy-duty applications.

Technical Specifications

Certifications & Standards

• ATEX: Certified for use in potentially explosive atmospheres (EU Directive 2014/34/EU)
• IECEx: International certification for equipment used in explosive atmospheres per IEC standards
• UL: Underwriters Laboratories listed, confirming compliance with North American safety standards
• RINA: Certified by the Italian Naval Register for marine and offshore applications

Applications & Use Cases

• Motor protection in industrial automation and control panel installations
• Heavy-duty motor drives in oil & gas, petrochemical, and mining environments (ATEX/IECEx rated)
• Marine and offshore motor protection systems (RINA certified)
• Large pump, compressor, and fan drive protection up to 500 A
• North American installations requiring UL-listed overload protection