1、Efficient Working: Winch relay contactor comes with a thumb switch wiring harness for easy and quick using, allowing you to start or stop the winch with just one click, thus improving work efficiency. 2、Safe and Reliable: With insulation performance and guard level, this 12V 250A winch relay contactor can effectively prevent electrical equipment from short circuits, overloads, etc., providing you with a safe work environment. 3、Powerful Performance: This 12V 250A winch relay contactor set has outstanding current carrying capacity, capable of handling high load working environments, making it ideal for Truck UTV 5000 to 7000lbs Winch. 4、Intelligent Design: Featuring a thumb switch wiring harness, this relay contactor allows for convenient and quick working without the need for complex steps, making it easy to control the winch with just one click. 5、Reliable Replacement: With a maximum switch voltage of 12V, maximum switch current of 250A, 4.5Ω coil resistance, and 50Ω touch spot resistance, this winch relay contactor ensures reliable performance for Winch.