The ABB TA25DU4.0 Thermal Overload Relay provides motor overload protection for ABB contactors A9 through A40 and (T) AL9 through (T) AL40, configured for a 2.8–4.0 A setting range and a 10 A trip class. It includes phase-loss sensitivity per IEC/EN 60947-4-1 to detect single‑phasing conditions and safeguard energized motors. The TA25DU4.0 is available with order code 1SAZ211201R1033, and a TA25DU-4.0M variant is also sold for this current range, delivering compact, plug‑in protection integrated with ABB control gear.
