Blue Sea 3003 HD-Series Battery Switch Selector w/Alternator Field Disconnect
-
Estimated Delivery:Oct 17 - Oct 21
-
Free Shipping: On all orders over $150
Guarantee safe & secure checkout

Blue Sea 3003 HD-Series Battery Switch Selector w/Alternator Field Disconnect
Stories
Stories
Stories
Blue Sea 3003 HD-Series Battery Switch Selector w/Alternator Field Disconnect
Blue Sea 3003 HD-Series Battery Switch Selector offers a robust 500 Ampere Continuous Rating, tailored for gasoline powered boats. This essential device ensures safe and efficient power management, allowing for the seamless operation of your boat's electrical systems.
Key Features:
- High Capacity: Accepts 4/0 battery cables, providing exceptional conductivity.
- Ignition Protected: Safely installed aboard gasoline powered boats, safeguarding against electrical hazards.
- Durable Construction: Features 1/2" (M12) tin-plated copper studs for maximum conductivity and corrosion resistance.
Ideal for boating enthusiasts and professionals, this product is supported by compliance with American Boat and Yacht Council (ABYC) requirements, ensuring quality and satisfaction. With a design that fits all Perko and Guest low amperage battery switch hole patterns, installation is a breeze. Upgrade your boat’s power management today!

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
WARNING: 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.
Shipping Policy
Thank you for choosing Outdoors.Supply. We aim to deliver your gear efficiently and reliably.
Carriers
We ship all orders via UPS Ground or FedEx Ground, depending on availability and destination.
Shipping Rates
- Orders under $150: Flat shipping rate of $15
- Orders $150 and above: Free shipping
Note: A handling fee of $7.50 may apply to certain items. If applicable, it will be clearly stated during checkout.
Order Processing
- Orders placed before 12:00 PM ET (Monday–Friday): Processed the same business day
- Orders placed after 12:00 PM ET or on weekends/holidays: Processed the next business day
Delivery Time
All orders are delivered within 3–7 business days from the date of shipment, depending on your location.
For any questions or concerns about your order, please contact us at [hello@outdoors.supply]. We’re here to help!
Discover more in our FAQ
How long does it take to process an order?
All orders are processed the same business day if placed before 12 PM EST. Orders placed after 12 PM EST are processed the following business day.
Do you ship internationally?
No! Currently we are only supporting shipments to contiguous United States. We do not ship to PO Boxes or Internationally.
What is your return policy?
No Returns
Due to the nature of our products and our commitment to ensuring the highest quality standards, we do not accept any returns under any circumstances.
No Refunds
We do not offer refunds for any reason, including but not limited to:
- Change of mind
- Incorrect size or style ordered
- Delayed shipping
- Product dissatisfaction
Please refer to our Refund Policy
What are your sizing options?
We have a size chart displayed on most products to reflect the sizing as accurate as possible. Please review the size chart and ensure you are leveraging the closest size possible.
Let customers speak for us
Recently Viewed Products
Why You'll Love Blue Sea 3003 HD-Series Battery Switch Selector w/Alternator Field Disconnect
Premium Quality
Blue Sea Systems is known for exceptional quality and attention to detail in every product.
Fast Shipping
Fast and reliable shipping to get your Blue Sea 3003 HD-Series Battery Switch Selector w/Alternator Field Disconnect to you quickly.
Satisfaction Guarantee
Backed by our comprehensive warranty for complete peace of mind.
Expert Support
Our dedicated support team is here to help with any questions about Blue Sea 3003 HD-Series Battery Switch Selector w/Alternator Field Disconnect.