ABB TF65-40 Thermal Overload Relay

ABB TF65-40 thermal overload relay provides motor protection for three-pole circuits in AF40–AF65 contactor assemblies, with a current-setting range of 30 to 40 A and a Class 10 thermal trip. This TF65-series device is designed for 50/60 Hz operation and can be mounted on a 35 mm DIN rail or directly onto the associated contactor using ABB mounting options. The unit offers 1NO-1NC (Form A/Form B) contacts for control wiring, and it carries IP20 protection for the enclosure with IP10 on the main terminals. It is compatible with AF40-65 style contactors and is suitable for use in industrial motor control panels across a temperature range of -25 to 60°C. Dimensions are approximately 101.4 mm high, 54.9 mm wide, and 106.9 mm deep. Duty data indicates 100% continuous operation; under starting conditions of 6x In for up to 1 second, the relay can perform up to 60 operations per hour, otherwise up to 15 operations per hour for lighter duty. The TF65-40 is part of ABB's TF65 family, providing economical electromechanical protection for motor circuits with robust trip contacts that help prevent motor damage from overloads.