CZC AUTO Top Post Knife Blade Battery Disconnect Master Switch Before purchase, please check your battery has 15-17mm cone battery NEGATIVE post Instruction: Disconnect the cable connection on the battery with the negative side first. Make sure the negative cable is always disconnected, then the positive cable.Install the battery knife disconnect switch on the negative battery terminal. (For safety, with the lever raised or disconnected.)Reconnect the battery cable on the positive side, then connect the negative battery cable to the opposite end. (For safety, with the lever raised or disconnected.) Checking if there is power when the lever is closed. Specification: Type: top post, negative, vertical Rated Current: 250A (12V) Instantaneous Current: 750A (12V) Main Material: brass plated with copper Features: Easy to Install The battery knife quick disconnect switch is equipped with nut and bolt for a hassle free installation to your battery. Heavy Duty Rust and corrosion resistant. The working parts of the assembly are all brass & copper capable of 250 Amps on a 12 Volt DC System. Easy Lever Operation The operation is very simple, just lift the lever to safely disconnect the electrical system and prevent drawing power from the battery. Put it down to reopen the connection. Note: 1. Never connect the battery disconnect switches to the positive terminal of your battery. 2. Ensure the key is removed from the ignition and all lights and accessories are turned off. 3. Wear safety equipment and remove any items or accessories that may contact the battery or switch. Side Post Battery Disconnect Switch Battery Terminal End with Wing Nut Battery Disconnect Switch Top Post Battery Disconnect Switch Side Post Solid Brass Battery Terminal Dual Battery Disconnect Switch Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Buying Options Customer Reviews 4.4 out of 5 stars 301 4.6 out of 5 stars 325 4.4 out of 5 stars 809 4.2 out of 5 stars 538 4.5 out of 5 stars 220 4.6 out of 5 stars 264 Price $11.99$11.99 $6.99$6.99 $5.99$5.99 $7.59$7.59 $7.51$7.51 — no data Material: Brass Electroplated with Copper Zinc Alloy Zinc Alloy with Brass Plating Zinc Alloy with Brass Plating Brass PBT Plastic Housing&Copper Tin Plating Inner Stud