ABB TA42DU-32 Overload Relay

ABB TA42DU-32 is a three-pole thermal overload relay (class 10) that protects three-phase motors by tripping when the current exceeds the set range. It provides a 22–32 A adjustable setting and includes 1 Form A (normally open) and 1 Form B (normally closed) auxiliary contacts for signaling and interlock tasks. The main circuit is rated up to 690 V AC, with auxiliary circuits rated for 440/500 V (DC/AC). It is UL-listed and designed for use with ABB A-Line contactors; when installed in a contactor, the TA42DU-32 designation is complemented by suffix 'B'. The part number associated with this model is 1SAZ311201R1002. This relay is intended for integration in industrial motor control schemes to deliver reliable thermal protection and allow monitoring through its auxiliary contacts.