KACOLA 500A Battery Disconnect Switch 12–36V — Lockable Cut-Off, 5000A Surge, Corrosion-Resistant

This compact, marine-grade switch provides a reliable way to interrupt battery power for trucks, RVs, boats and other vehicles where safety, theft prevention and battery maintenance matter. Built to handle continuous loads up to 500 amps and short surges to 5000 amps, it uses two 10mm threaded studs for straightforward wiring and replaces part number 20247.

How does this switch improve safety and protect my electrical system?

By creating a positive mechanical break in the battery circuit, the KACOLA disconnect stops current flow when you need it off. The fixed-cast handle locks through a panel hole to avoid accidental toggles, and corrosion-resistant metals maintain a secure connection even in damp or salty environments.

• Prevents parasitic drain when vehicle is stored
• Stops accidental shorts and isolates electronics during maintenance
• Lockable handle prevents unauthorized use or tampering
• Waterproof metal and copper parts resist corrosion

Will it work with my vehicle or boat and how hard is installation?

The switch is compatible with 12–36V systems and fits many use cases from cars and trucks to RVs, yachts, golf carts and agricultural machinery. Installation is simple: attach battery negative cables to the two 10mm studs and secure with the supplied nuts; most DIYers can complete the job using basic tools.

• Works on 12V, 24V and 36V systems
• Two threaded studs accept standard battery cable terminations
• Replace part number 20247 without rewiring major harnesses
• Includes wiring diagram in images for reference

What are the electrical ratings and durability features?

The KACOLA unit is rated for continuous currents up to 500A and can withstand instantaneous inrushes up to 5000A, making it suitable for heavy-starting loads. Constructed from waterproof metal and copper components, it’s designed to resist corrosion and maintain performance in harsh or humid conditions.

• Continuous rating: 500 amps
• Instantaneous rating: 5000 amps
• Rugged fixed-cast handle for long-term durability
• Sealed materials to reduce moisture-related failures

How does the lock-out feature work and why is it useful?

The handle is designed to pass through a lock hole in your panel, allowing you to secure the switch in the off position with a padlock or similar device. This prevents accidental reactivation and gives a visible deterrent to unauthorized use, ideal for stored vehicles or shared fleets.

• Handle locks to panel via lock hole
• Simple padlock compatibility for secure isolation
• Visible physical indicator that battery is disconnected
• Useful for theft prevention and maintenance lock-out

Who is this for? The KACOLA 500A Battery Disconnect Switch is aimed at boat owners, RV and truck operators, fleet managers, contractors and anyone who needs a robust, easy-to-install way to isolate battery power. If you require high current handling, corrosion resistance and a lockable safety feature for storage or servicing, this switch is a practical upgrade over standard battery terminals.