Universal Battery Disconnect Switch: This high-current switch is built to cut off electrical power, safeguarding against electrical fires and theft during equipment downtime. It offers a dependable means to shut down power during maintenance, preventing excessive battery drain and ensuring battery longevity. Disconnect your battery when your vehicle (car, boat, RV, ATV, trailer, or off-road equipment) is not in use for added safety at all times Applications: Rated for continuous duty up to 500 Amps, this switch is suitable for 12-36V DC systems to isolate and secure electrical systems. The master battery disconnect switch finds wide usage across various vehicles and equipment, including ATVs, trailers, UTVs, cars, marine outboards, off-road vehicles, RVs, trucks, heavy vehicles, and electrical equipment. Top-Level Quality: Our master battery disconnect switch, featuring a durable aluminum alloy heavy-duty housing, offers strong weather resistance and a long service lifespan. It's designed to protect internal components, ensuring reliable operation even in harsh conditions. Easy Installation: Our 12V battery isolator switch features an on/off indicator with a clear, audible click when activating. No modifications needed! Here's how to install it: Step 1: Disconnect the battery, focusing on the negative cable. Step 2: Select the suitable mounting position for the switch. Step 3: Connect the positive and negative cables (DO NOT ATTACH SIMULTANEOUSLY to turn off the switch), then mount the switch. Step 4: Reconnect the battery and verify proper operation. BUY WITH CONFIDENCE: We are so confident you'll think we have the satisfied battery disconnect switch on the market. If you have any problem about our product, please feel free to give us a message and we will do anything for you to make the thing right. We go out of our way to make sure every customer is happy and satisfied with our product and service. 500A 12-36V Master Battery Disconnect Switch