The ABB 2TLA050210R4020 is a wire tensioner and gripper from the Smile family, built for emergency pull-wire switch systems. The stainless steel construction handles the mechanical load of tensioning a wire rope along a conveyor or machine perimeter — the material choice resists corrosion in washdown or outdoor environments where a plated carbon-steel part would pit.
This tensioner mounts at the end of a pull-wire run, keeping the wire taut so the switch actuates reliably when pulled. The stainless steel body and gripper are sized for the wire diameters typical of ABB's Smile emergency stop systems. In a panel or on a machine frame, it lives at the wire termination point — not inside the enclosure.