GMURA 12V Battery Disconnect Master Switch — 250A In-Cabin Rocker Panel with 3m Cable, IP65

GMURA's 12V DC 250A Battery Disconnect Master Switch is an in-cabin battery kill switch with a rocker panel and long cable that safely cuts power to prevent drain and deter theft.

This compact battery disconnect combines a heavy-duty 250A switch body with a user-friendly rocker panel so you can isolate the vehicle battery from inside the cabin. Built from copper and ABS and rated for a 12V system, it handles high starting currents while offering a low standby draw. The included 9.84 ft (3 m) cable lets you place the control within easy reach, eliminating the need to access the engine bay each time you want to disable or re-enable the electrical system.

How does this switch stop battery drain?

When the switch is turned off, it physically opens the battery circuit, preventing parasitic loads from accessories and aging circuits. Because the device uses high-conductivity copper contacts and flame-retardant housing, it reliably interrupts large currents without significant heat buildup.

• Rated Voltage: 12V DC suitable for most automotive systems
• Rated Current: 250A continuous; Instantaneous Current: 5000A for cranking surges
• Standby Current: 0.003A for minimal self-drain when engaged
• Materials: ABS plastic body and copper contacts for stable conductivity

Can I install and operate the control from inside my cabin?

Yes — the rocker switch panel is designed for in-cabin mounting and connects with a nearly 10-foot cable so you can place it on the dash or console. This removes the inconvenience of reaching under the hood and makes disabling the battery quick and repeatable.

• Includes a 9.84 ft (3 m) cable for flexible panel placement
• Rocker-style actuator for intuitive on/off operation
• Panel mounting allows clean, accessible installation in the cabin

Will this switch improve security and electrical safety?

Turning the switch to off interrupts the starter and most vehicle electronics, which can deter theft and protect the battery during long storage. The housing is flame retardant and the product carries IP65-level protection for resistance to dust and low-pressure water jets, adding robustness for automotive and marine environments.

• IP65-rated protection against dust and water spray
• Flame-retardant construction for improved safety near wiring and terminals
• When open, vehicle cannot be started, providing a simple theft-deterent measure

Which vehicles and situations is this switch suitable for?

This disconnect is engineered for 12V systems across a wide range of vehicles where battery preservation or added security is needed. It's a practical option for older vehicles without built-in immobilizers, seasonal vehicles, marine craft, and off-road machines.

• Recommended for cars, trucks, RVs, campers, ATVs, UTVs, and boats with 12V systems
• Useful for vehicles stored long-term or with parasitic drain issues
• Installers should disconnect the battery before fitting and perform an ignition test after installation

Who is this for? The GMURA 12V DC 250A Battery Disconnect Master Switch is aimed at drivers, fleet owners, hobbyists, and boaters who want an easy-to-reach way to protect battery life, add a simple layer of anti-theft protection, and safely cut power during storage or maintenance. Professional installers and DIYers who need a compact, high-current switch with an in-cabin control panel will find this product especially useful.