Skip to product information
1 of 3

Brand: Blue Sea Systems

Blue Sea Systems 11003 HD-Series 3-Position Battery Switch with Alternator Field Disconnect

Blue Sea Systems 11003 HD-Series 3-Position Battery Switch with Alternator Field Disconnect

Regular price $101.72
Regular price Sale price $101.72
Sale Sold out
Shipping calculated at checkout.

8 available

About this product

The Blue Sea Systems 11003 HD-Series Battery Switch is a 3-position switch designed for reliable battery management in marine applications. It features an alternator field disconnect and is ignition protected for safe installation on gasoline-powered boats.

  • Ratings: 500A continuous, 700A (5 min), 1150A (60 sec), 2750A (10 sec)
  • Maximum Voltage: 32V DC
  • Terminals: M12 tin-plated copper studs with 7/8 in. length; accepts 1/2 in. and M12 ring terminals
  • Compatibility: Accepts two 4/0 AWG (95mm) battery cables
  • Design: Surface or rear panel mounting options with tactile knob textures for easy positioning
  • Compliance: Meets American Boat and Yacht Council (ABYC) requirements
  • Regulatory note: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Manuals & videos

Quantity
  • Secure checkout
  • 21-day return requests
  • Free standard shipping $100+

Product facts

CT SKU
CT-101419
Model / MPN
11003
UPC / GTIN
632085110031
Package dimensions (H × W × L)
3" X 7" X 9"
Package weight
1.3 lb
Country of origin
UNITED STATES

Specifications

AFD
Yes
Positions
3
California Proposition 65 warning
<p><img src="https://productimageserver.com/prop65/6pt.png" alt="Warning" /><strong>WARNING:</strong> 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 <a href="http://P65Warnings.ca.gov">P65Warnings.ca.gov</a>.</p>

Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.

Complete the setup

Recommended accessories

Useful add-ons matched to this product.

Shipping & returns

Request an eligible return within 21 calendar days after delivery. Every physical return requires written approval and an RMA number and must be shipped within five business days after the RMA is issued. The customer pays return shipping for an ordinary return. Tug & Tow provides prepaid return shipping for a verified damaged, defective, short, or incorrect shipment. We do not charge a restocking fee. See Shipping & Returns for eligibility, exclusions, and details.

Fit & compatibility

Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.

Need help choosing?

Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.