• Blue Sea Systems 3003 HD-Series Battery Switch Selector with Alternator Field Disconnect
  • Blue Sea Systems 3003 HD-Series Battery Switch Selector with Alternator Field Disconnect
  • Blue Sea Systems 3003 HD-Series Battery Switch Selector with Alternator Field Disconnect
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Blue Sea Systems

Blue Sea Systems 3003 HD-Series Battery Switch Selector with Alternator Field Disconnect

Blue Sea Systems 3003 HD-Series Battery Switch Selector with Alternator Field Disconnect

20234

$142.97 USD
$142.97 USD
Sale Sold out
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7 in stock
  • 30-Day Returns
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  • Free Shipping — Contiguous U.S.

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Free standard shipping is available on all orders shipping within the Contiguous United States, with no minimum order. Alaska and Hawaii are excluded from free shipping. Orders are typically processed within 1–2 business days. See our Shipping Policy for complete terms.

Returns & Refunds

Eligible items may be returned within 30 days of delivery. Items must be new, unused, uninstalled, and in original packaging. An RMA is required.

Installment options at checkout are provided by Shop Pay and its partners and are subject to eligibility. Options depend on your purchase amount and may require a credit check by the financing partner. Terms, rates, and eligibility are determined by the financing partner. For details, see the Shop Pay Installments terms during checkout.

3003 HD-Series Battery Switch Selector with Alternator Field Disconnect

Features:

  • 500 Ampere Continuous Rating
  • Accepts 4/0 battery cables
  • Ignition protected - safe for installation aboard gasoline powered boats
  • .870" (22.01mm) stud length to accept 4 or more cable terminals
  • 1/2" (M12) Tin-plated copper studs for maximum conductivity and corrosion resistance
  • Meets American Boat and Yacht Council (ABYC) requirements for battery switches
  • Tactile textures indicate knob position by feel only
  • Case design allows surface or rear panel mounting
  • Fits all Perko and Guest low amperage battery switch hole patterns

WarningWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

Control high-current marine electrical systems with the Blue Sea Systems 3003 HD-Series Battery Switch Selector with Alternator Field Disconnect. Designed for boat owners, marine technicians, and installers, this ignition-protected battery switch provides a dependable way to select and manage battery power aboard gasoline-powered boats while supporting demanding electrical installations.


Built with a 500 Ampere continuous rating, the 3003 battery switch accepts 4/0 battery cables and uses 1/2-inch (M12) tin-plated copper studs for conductivity and corrosion resistance. The extended stud length accommodates four or more cable terminals, helping simplify connections in installations with multiple battery cables. Its alternator field disconnect function supports appropriate electrical system installation and operation when required by the vessel’s configuration.


The HD-Series case design supports surface or rear panel mounting, providing installation flexibility for a range of marine electrical layouts. It

Truck Freight: No
Oversized: No
Owners Manual Url: https://productimageserver.com/literature/ownersManual/20234OM.pdf

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