The ABB EF19-18.9 is an electronic overload relay designed to handle motor protection with a current range of 5.7 to 18.9 amps. Built to fit the EF19 frame, it offers selectable trip classes of 10, 20, or 30, allowing for adjustable response times based on your application needs. This device works seamlessly with AF Series contactors, specifically within the AF9 to AF38 frame sizes, and is intended strictly for 3-phase systems. Distributed by BSP Automation, the EF19-18.9 is a solid choice for anyone needing reliable overload protection that’s easy to configure and integrate. In the field, this relay is often called the “EF19 trip boss” for its straightforward and effective performance.