SKU: LON52-45780
MPN: 52-45780
The Longacre Battery Disconnect Switch with Alternative is a heavy-duty rotary panel-mount electrical control device engineered for vehicles and equipment requiring reliable power isolation. Rated for 175-amp continuous current and designed to operate across a broad 6–36V DC voltage range, this switch provides critical on-demand battery disconnection capability for race cars, marine vessels, off-road vehicles, and emergency power management applications.
The 175-amp rating ensures this disconnect switch handles high-load electrical systems without degradation. The wide voltage tolerance—6V through 36V DC—accommodates everything from small-displacement single-battery setups to multi-battery or auxiliary power configurations common in race vehicles and marine environments. Panel-mount design allows for clean, integrated installation in engine bays, cabins, or control panels. The rotary mechanism is proven for hundreds of cycles, making it suitable for frequent activation in pit stops, pre-event safety checks, or emergency shutdown scenarios.
Typical applications include NHRA/IMSA race vehicles where battery isolation is a technical inspection requirement, auxiliary marine power systems, off-road recovery winches, and stationary generator backup systems. This switch is favored in environments where electrical system integrity and rapid power cutoff are non-negotiable safety features. The compact footprint (4.4 × 4.3 × 4.7 inches) and 1.05 lb weight make it easy to fit into space-constrained installations without adding significant mass.
When selecting a battery disconnect switch, amperage rating and voltage compatibility are the primary performance factors. This model's 175-amp capacity covers most dual-battery and high-output alternator setups, while the 6–36V range eliminates the need for multiple SKUs across different vehicle platforms. The rotary switch mechanism is mechanically robust and requires no external power source to operate, ensuring reliable function even in total electrical system failure.
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