Ensure reliable and fast protection for your motors with the ABB TF42-20 Thermal Overload Relay. This economic electromechanical device offers robust protection against overloads and phase failures. Featuring continuous temperature compensation, selectable manual or automatic reset, and a trip indication, it's designed for direct connection to block contactors. The TF42-20 provides essential safety features for your industrial applications..The ABB TF42-20 is a 3-pole thermal overload relay designed for motor protection. It offers a current setting range of 16-20 A and operates with a Trip Class 10. The relay includes temperature compensation, a normally closed (NC) trip contact, and a normally open (NO) signal contact. Resetting can be performed manually or automatically, and it features a trip-free mechanism and trip indication. It has a rated insulation voltage of 690V and is suitable for 50/60 Hz operation. The ambient temperature range is -4 to 140 °F. Approvals include ABS, CB, CCC, cUL, DNV, GOST, LLOYD, and RINA. The device has a net weight of 0.3 lbs and a gross weight of 0.38 lbs.