The ABB TF42-13 is an economical and reliable electromechanical thermal overload relay designed for main circuit protection. It provides fast and dependable protection for motors against overloads and phase failures. This relay features temperature compensation, a trip contact (NC), a signal contact (NO), selectable automatic or manual reset, a trip-free mechanism, a STOP function, and trip indication. It connects directly to block contactors, with single mounting kits available as an accessory..The ABB TF42-13 is a 3-pole thermal overload relay with a rated current (In) and rated operational current (Ie) of 13A. It has a setting range (OLR) of 10-13A and a trip class of 10. The relay is compatible with TA/TF contactors and has a rated insulation voltage (Ui) of 690 volts. It operates within an ambient temperature range of -25 to +60 degrees Celsius for operation and compensated operation, and -50 to +80 degrees Celsius for storage. The relay features screw terminals and can be mounted directly on a contactor. It includes one NC auxiliary contact and one NO auxiliary contact.