KACOLA 500A Battery Disconnect Switch 12–36V — Lockable Panel Mount, Waterproof, 5000A Surge

This compact, serviceable switch replaces part number 20247 and is engineered for demanding electrical environments where quick, reliable isolation of a battery is required. Built from corrosion-resistant metals with copper conductors and two 10mm threaded studs, the switch handles continuous 500A loads and instantaneous spikes up to 5000A. It is waterproof, easy to mount, and includes a fixed-cast handle that locks into a panel plate to prevent accidental operation.

How does this switch protect my vehicle's electrical system?

By physically disconnecting the battery negative, the switch prevents parasitic drains, accidental shorts, and reduces risk during maintenance or storage. Locking capability also keeps the circuit open or closed as required, limiting unintended engagement.

• Instant cut-off of battery feed to prevent parasitic discharge
• Lock-out plate secures handle to avoid accidental toggles
• Rated for 500A continuous and up to 5000A surge for high-start-current loads

Will this fit in my RV, truck, boat, or other equipment?

The KACOLA switch is designed for wide vehicle compatibility, fitting most 12–36V systems that use stud-style battery connections. Installation is conventional and usually requires only basic tools and battery cable work.

• Two 10mm threaded studs accept common battery cable lugs and nuts
• Mounts through panels with a lock-out plate for a secure fit
• Works with RVs, yachts, trucks, golf carts, tractors, and construction equipment

How difficult is installation and what wiring is needed?

Installation is straightforward: disconnect the battery, mount the switch, and connect the negative battery cable to the studs using lugs and nuts. No special tools or professional wiring knowledge are typically required, though follow proper safety procedures and the included wiring diagram.

• Disconnect battery before installation to avoid sparks
• Use battery cable lugs on the two 10mm studs and torque nuts securely
• Refer to product images for suggested wiring layout and mounting steps

How durable and weather-resistant is the switch?

The switch housing uses waterproof metal and copper components engineered to resist corrosion and seal against moisture. That makes it suitable for marine and outdoor applications where exposure to humidity, salt air, or splashing is expected.

• Water-resistant construction for marine and outdoor use
• Copper conductors for low-resistance, consistent connections
• Heavy-duty fixed-cast handle engineered for long life

Who this product is for: technicians, fleet managers, boat owners, RV enthusiasts, and DIY mechanics who need a dependable way to isolate a battery during storage, service, or emergency shutdowns. If you require a high-current, lockable, corrosion-resistant cut-off that replaces part 20247 and fits 12–36V systems, the KACOLA 500A switch offers a durable, easy-to-install solution.