Designed for quickly disconnecting the battery from a vehicle's electrical system, this Heavy-Duty Single-Pole Series 36 V 175 A Master Battery Disconnect Switch with Die-Cast Lever and Copper Contacts (2484-09) helps prevent potential thermal events and ensures system shutdown during maintenance for the safety of service personnel. Featuring heavy-duty plated-steel housing, this manual master disconnect switch is ideal for heavy-duty truck, construction, emergency vehicle, bus and transit, and agricultural applications.