ABB TA25DU-4.0 thermal overload relay, catalog number 1SAZ211201R1033, provides thermal overload protection for a three‑phase motor circuit with a current setting range of 2.8 to 4.0 A. It is part of ABB's TA25DU family and is designed for use with ABB motor starters in 3‑pole main circuits, delivering a compact electromechanical protection element that interrupts current when the motor draws excess current to prevent overheating. The 1SAZ211201R1033 designation appears across ABB distributor catalogs and manufacturer literature for the TA25DU-4.0, confirming its intended applications in motor protection up to about 4 A per phase.
