Master Disconnect Switch w/Panel

The Master Disconnect Switch with Panel from Painless Wiring is a vital safety and convenience component designed for custom vehicle builds, restorations, and performance modifications. This switch is essential for anyone working on hot rods, classic cars, street machines, or modern swap projects, as it isolates battery power instantly for safety during diagnostics, long-term storage, theft prevention, and emergency shutdowns.

This Painless Wiring unit features a heavy-duty relay-style disconnect switch combined with an integrated control panel, allowing users to cut all battery feed from a single, accessible location. The switch is designed to handle the full battery load without voltage drop or relay chatter, ensuring the protection of sensitive electronics and preventing parasitic drain on dormant vehicles. The panel design includes clear labeling for a professional appearance, making it ideal for integration into custom dash layouts or engine bay installations.

Builders who require reliable battery isolation will find this disconnect switch particularly beneficial. Its compact dimensions make it easy to mount in various locations without consuming excessive space or requiring complicated bracket fabrication. This product is perfect for those looking to enhance the safety and functionality of their custom electrical systems.