During the final assembly of power‑train sub‑systems, the engine cut‑off module is fitted to the handheld torque‑wrench that fastens engine mounting brackets. When the operator releases the trigger, the module instantly interrupts power to the electric motor, preventing any residual rotation that could loosen a newly tightened bolt. This safety function allows technicians to work close to moving parts without the risk of sudden motor restart, which is especially important on cramped engine bays where hand clearance is limited. The module also integrates with the line’s control system, sending a signal that records each torque event for quality‑trackability. In addition to assembly, the same module is used on portable pneumatic tools in the component‑manufacturing area, where it disables the motor as soon as the tool is set down, reducing wear and eliminating idle‑run energy consumption. By providing reliable, on‑demand motor suppression, the module supports a smoother workflow, lowers the chance of accidental damage, and helps maintain the tight schedule of a high‑volume vehicle production line.