ABB TF42-0.74 Thermal Overload Relay

ABB TF42-0.74 Thermal Overload Relay is a compact, three‑pole protection device used to guard low‑voltage motor circuits in ABB motor‑start assemblies. It provides thermal protection with a nominal full‑load current of 0.74 A per pole and an adjustable setting range from 0.5 A to 5 A per pole, enabling precise protection across a range of small to medium three‑phase motors. As part of ABB’s TF42 family, the TF42‑0.74 is described as an economical electromechanical protection device for the main circuit, designed to be paired with ABB contactors and other motor‑control components. The variant’s data sheet identifies its TF42‑0.74 designation and confirms three‑pole operation with the standard thermal‑trip characteristic used for motor protection in low‑voltage systems. Typical applications include guarding motors in standard drive panels and control cabinets, such as conveyors, pumps, and fans, when integrated with ABB protection and control gear. For exact installation requirements, electrical ratings, and coordination with other protective devices in your panel, consult the official ABB TF42 data sheet and your local ABB catalog to ensure proper mounting, wiring, and regional compliance.