The TF42-1.7 thermal overload relay is an economical electromechanical protection device for the main circuit. It offers reliable and fast protection for motors in the event of overload or phase failure. The device has a trip class of 10. Other features include temperature compensation, trip contact (NC), signal contact (NO), selectable automatic or manual reset, no-trip mechanism, STOP function and trip indication. The overload relays are connected directly to the block contacts. Single-mount kits are available as accessories.

Technical specifications