ABB EF65-56 Electronic Overload Relay

ABB EF65-56 Electronic Overload Relay is a self-powered protective module that plugs into ABB AF40–AF65 contactors to guard three-phase motors up to 56 A. The relay covers a current range of 20 to 56 A with an adjustable trip class (10, 20, or 30) to tailor protection for different motor sizes and duty cycles, and it is associated with part number 1SAX331001R1102. It is certified for hazardous locations with ATEX and IECEx approvals, reflecting ABB’s global safety compliance, and is designed for use with ABB’s AF40–AF65 series contactors to provide integrated overload protection in compact motor control panels. Typical applications include conveyors, pumps, fans, and other general industrial machinery where reliable, field-adjustable motor protection is required. The EF65 family is known for self-supplied electronic overload protection—no external power supply is needed—and the EF65-56 specifically targets motors in the 20–56 A range, delivering precise current sensing and protection within a compact footprint suitable for panel mounting.