300A 12-48V Battery Disconnect Switch with Mount Bracket for Boat RV Solar

Description

This battery disconnect switch is specifically designed for high-load applications. Featuring red copper terminals and a nylon housing, it offers excellent electrical conductivity while enabling robustness and safety. It supports a wide voltage range of 12–48 V, with a continuous current rating of 300 A and a starting current rating of 900 A, making it suitable for circuit protection in vessels, motorhomes, lorries and solar mechanisms. The upgraded design, complete with a mounting bracket, eliminates the need for large cut-outs, allowing for quick installation even in confined spaces, offering greater flexibility and convenience compared to traditional switches.

Key Features

Flexible Installation: It is equipped with heavy-duty mounting brackets, supporting both surface-mounted and flush-mounted installation. Unlike traditional switches, it does not require large cut-outs in the panel, allowing for easy installation even in confined spaces, making it an ideal item for battery disconnection modifications in boats, motorhomes and cars.

High-Efficiency and Stable Conductivity: The switch features tin-plated copper terminals, delivering excellent conductivity and significantly reducing circuit losses. With a rated continuous current of 300A, a 5-minute current of 500A, and a peak starting current of 900A, it reliably supports high-load circuits in marine vessels, motorhomes and solar systems without overheating.

 

High Safety: Featuring a simple ON/OFF rotary knob design, it allows for rapid disconnection of the circuit, effectively preventing issues such as battery drain and leakage. A single press cuts off power during periods of inactivity or maintenance, avoiding the risk of accidental short circuits and electrical fires, and providing reliable safety protection for your vehicle’s electrical system.

Wide Voltage Compatibility: It supports 12–48V DC systems, making it widely compatible with a variety of vehicles including boats, motorhomes, lorries, cars, campervans, trailers, and ATVs/UTVs. It serves as a universal circuit protection accessory for modifications, camping and boating scenarios, effectively enhancing electrical safety, reducing standby power consumption and extending battery life.

Engineered for Robustness: Constructed from premium red copper, PC, alloy and nylon, this product offers exceptional robustness, tolerance to cracking, and a long-lasting lifespan.

 

Details

Application

It supports 12–48V DC systems and is widely compatible with a variety of vehicles, including boats, motorhomes, lorries, cars, campervans, trailers, and ATVs/UTVs, making it a universal circuit protection accessory for modifications, camping and boating scenarios.

Specifications

Color: Black and Red
Material: Red Copper, PC, Alloy and Nylon
Gross Weight: 0.46kg/1.01lbs
Net Weight: 0.41kg/0.9lbs
Package Size: 10.2* 9.8* 7.8cm/4.02*3.86*3.07in
Switch Size: 7.1*6.51*8.55cm/2.8*2.56*3.37in
Mounting Bracket Size: 7.5*9.25cm/2.95*3.64in

Package Included

1 x Battery Disconnect Switch Body with Mounting Bracket
1 x Short Self-tapping Screw
8 x Long Mounting Screws
4 x Matching Nuts

Notes

Please allow the slight color difference caused by the shooting light and the 1-3 cm error due to manual measurement, and make sure you do not mind before ordering.
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On Nov 4, 2026 at 18:33:34 PST, seller added the following information:

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