The ABB TF42-16 is an economic and reliable electromechanical thermal overload relay designed for the main circuit. It provides fast and dependable protection for motors against overload and phase failure. 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 a trip indication. It connects directly to block contactors, with single mounting kits available as accessories..The ABB TF42-16 is a thermal overload relay with trip class 10. It offers protection against overload and phase failure for motors. The relay features temperature compensation, a normally closed (NC) trip contact, and a normally open (NO) signal contact. Resetting can be manual or automatic, and it includes a trip-free mechanism and trip indication. It is designed for direct connection to block contactors.