ABB 1SAX221001R1102 Overload Relay

ABB EF45-45 electronic overload relay, model 1SAX221001R1102, is a three-pole overload protection device designed for use with ABB AF-series contactors to safeguard 3-phase motors in industrial control panels. It provides adjustable overload protection with a current setting range of 15 to 45 A, allowing precise tailoring to motor size and duty cycle, and it coordinates with AF contactors to interrupt motor current when overheating or overload conditions are detected. The relay uses screw-terminal connections for straightforward field wiring, supports AC operation up to 690 V, and is compatible with standard ABB control circuits, enabling reliable integration into existing motor control schemes. As part of ABB's EF45 family, the EF45-45 provides robust, trip-sensitive protection with selectable parameters to reduce nuisance trips, and its compact 3-pole design makes it suitable for use in compact motor control centers and panel-mounted installations.