12V/24V Rotary Battery Disconnect Switch – 300A Cut-Off

Protect Your Vehicle's Electrical System with a Heavy-Duty Rotary Disconnect Switch

The ZOHMYIY 12V/24V Rotary Battery Disconnect Switch gives you instant, reliable control over your vehicle's electrical system. Whether you're storing a car, maintaining a truck, or securing a boat or RV, simply rotate the knob to completely isolate the battery — preventing power drain, short circuits, and terminal wear. Built from corrosion-resistant brass and ABS, this switch is engineered for long-lasting performance in demanding automotive and marine environments.

Made in Mainland China.

Key Features

• Heavy-Duty Rotary Design: Intuitive on/off rotary knob for fast, effortless battery isolation — no tools required.
• 300A High Current Capacity: Handles up to 300 amps and supports both 12V and 24V DC systems for stable, dependable performance.
• Durable Brass + ABS Construction: Corrosion-resistant materials ensure a long service life in automotive, agricultural, and marine environments.
• Enhanced Battery Protection: Stops power drain, prevents short circuits, and reduces terminal wear during storage or maintenance.
• Easy Installation & Operation: Simple to mount with a quick-lock mechanism — just rotate to disconnect or reconnect power.
• Wide Application: Compatible with cars, trucks, RVs, boats, agricultural vehicles, and other commercial vehicles.

Specifications

Package Includes

• 1 × Rotary Battery Disconnect Switch (Isolator)

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Authoritative Resource

For safe vehicle electrical system maintenance and battery handling guidelines, refer to the U.S. Consumer Product Safety Commission (CPSC).

Learn more: MagSafe (wireless charger)

Frequently Asked Questions

Q: What vehicles is this battery disconnect switch compatible with?

A: This rotary battery disconnect switch is compatible with a wide range of 12V and 24V DC vehicles, including cars, trucks, RVs, boats, agricultural vehicles, and commercial equipment. It fits standard 20mm battery posts, making it versatile for most automotive and marine applications.

Q: How does the rotary battery disconnect switch prevent power drain?

A: By rotating the knob to the OFF position, the switch fully isolates the battery from the vehicle's electrical system. This stops any parasitic draw or power leakage that can occur when a vehicle is parked or stored for extended periods, helping to preserve battery life.

Q: Is this battery cut-off switch difficult to install?

A: No — the switch is designed for easy installation. It features a quick-lock, tool-free mounting mechanism. Simply connect it inline with your battery cable and rotate the knob to control power. No special tools or electrical expertise are required for basic installation.

Q: What is the maximum current this disconnect switch can handle?

A: This switch is rated for up to 300 amps, making it suitable for high-power automotive, marine, and agricultural electrical systems running on 12V or 24V DC.