COZYEHOO Battery Disconnect Switch 12V Master – 12-48V DC, 275A Continuous, High-Current Off/On

Overview

Meet the COZYEHOO Battery Disconnect Switch, a compact yet rugged power controller designed for 12 to 48-volt systems. A simple flip gives you instant power control, while turning it off safely isolates your electrical setup. Built to endure daily use in engine bays or on decks, its tactile action and solid construction make it a practical addition to a wide range of vehicles and equipment.

Key specifications at a glance

This switch supports 12-48V DC systems and combines high-current capability with straightforward operation. It handles 275 amps of continuous DC power for up to 1 hour, 455 amps intermittently for 5 minutes, and 1250 amps for cranking power lasting 10 seconds. The connections use 2x3/8" (10 mm) studs for dependable, low-resistance wiring.

Durable construction for demanding environments

• Sturdy ABS plastic housing resists impact and heat in busy engine bays and marine spaces
• Tinned copper studs and nuts provide reliable contact and corrosion resistance
• 4 stainless steel mounting screws and caps included for secure installation
• 4 removable side plates offer easy access to battery cables when wiring or maintenance is needed

Safe, versatile power control

Safely disconnecting the battery helps prevent unnecessary drain when a vehicle or boat is parked or stored. The switch can operate independently or be locked together with other switches, delivering a flexible and cost-effective way to isolate batteries across a system. Its broad applicability extends to various electrical fixtures beyond vehicles, including lighting and auxiliary devices.

Practical uses and benefits

• 12-48V DC compatibility suits cars, RVs, trucks, and marine vessels
• Isolate and protect circuits such as lighting, dash cameras, or auxiliary accessories
• Versatile mounting with side-access panels to simplify wiring and maintenance

Simple to use and install

With clear on/off action and a compact footprint, installation is straightforward. The side plates and mounting hardware streamline wiring routes, while the modular design allows pairing with other switches if you need more complex battery management in larger systems.

Note: The described capabilities reflect rated performance and typical use cases. Actual results depend on installation, battery health, and operating conditions.