SKU: CW10842
UPC: 046904230013
MPN: 2300A
The Guest 2300A Diesel Power Battery Selector Switch is a heavy-duty, multi-voltage battery management system engineered for marine diesel applications. This polycarbonate-housed selector switch provides independent alternator field disconnect (AFD) technology, allowing you to isolate batteries or select any position—including "off"—without risk of alternator or electrical system damage. Built for 6, 12, 24, or 36-volt systems, the 2300A handles continuous amperage loads of 360 amps and momentary peaks of 600 amps, making it suitable for serious recreational and commercial marine vessels.
The 5/8-inch cable lug termination accommodates standard marine battery cable sizes, and the gray polycarbonate enclosure resists UV degradation and corrosion common in saltwater and fresh-water environments. The AFD feature is critical for diesel engine protection: sudden battery disconnection without proper field discharge can generate dangerous voltage spikes that destroy alternator windings and sensitive electronics. Guest's integrated solution eliminates this risk while simplifying battery bank management on multi-battery installations.
This switch serves offshore fishing boats, work vessels, and cruising sailboats that run diesel auxiliary engines and require reliable battery isolation during engine-off periods or emergency shutdown. Weekend boaters benefit equally—the ability to select between engine-start and house-battery banks prevents accidental starter discharge and extends battery life across the season. The one-year manufacturer warranty reflects Guest's confidence in component durability on extended marine deployments.
Battery selector switches are foundational to any multi-battery marine electrical system. The 2300A's voltage flexibility and high-amperage capacity distinguish it from single-voltage switches; its AFD technology is the feature that protects your diesel alternator from the voltage transients that cause premature failure. Serious boaters and marine technicians specify this class of switch for its proven reliability in harsh marine duty.
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