ABB TF42-2.3 Thermal Overload Relay

ABB TF42-2.3 Thermal Overload Relay is a three‑pole motor protection device that fits into ABB’s TF42 family to interrupt current should a 3‑phase motor run too hot, safeguarding windings in low‑voltage starting circuits. The variant 1SAZ721201R1031 covers a setting range up to 2.30 A with a full‑load current rating of 2.3 A, making it suitable for small to medium motors paired with ABB contactors. It provides adjustable thermal overload protection (0–2.30 A) so you can tailor trip thresholds to the motor’s operating current, and it is designed for integration into standard ABB 3‑pole motor control assemblies. Commonly used in three‑wire motor starter configurations, this relay helps protect pumps, fans, conveyors, and other equipment by isolating the motor if overload occurs, while maintaining compatibility with ABB low‑voltage control gear and expanding protection reliability in motor circuits.