ABB EF19-2.7 Electronic Overload Relay

ABB EF19-2.7 Electronic Overload Relay is a three‑pole motor protection device in the EF19 family, designed for use with ABB AF09‑series contactors to guard three‑phase motors against overload. It provides a per‑pole current‑setting range of 0.80–2.70 A, enabling precise protection for motors drawing within that window, and it supports 50/60 Hz operation with line voltages up to 690 V AC. Housed in a compact three‑pole enclosure with threaded terminals, the unit carries an IP20 rating and operates reliably in ambient temperatures from −25 to 70 °C. The EF19‑2.7 includes a signaling output in the form of one normally open (Form A) and one normally closed (Form B) contact, allowing status indication or control logic integration without a separate relay. Its physical footprint is about 85.1 mm high, 44.5 mm wide, and 59.1 mm deep (3.35 in x 1.75 in x 2.33 in). The official ABB part number commonly used for this model is 1SAX121001R1103, and the EF19 family encompasses other setting ranges (for example EF19‑0.32) that share the same mounting and connection style but different current ranges.