My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Blue Sea Systems 11003-BSS HD-Series Heavy Duty 3-Position Battery Selector Switch with Alternator Field Disconnect

Manufacturer

Picture for manufacturer Blue Sea Systems

Part Number

11003-BSS
8 reviews
Sale Price

$102.99

4 left at this price

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Blue Sea Systems 11003-BSS HD-Series Battery Switch is a heavy-duty 3-position selector switch designed to switch isolated battery banks to all onboard loads. Built for demanding marine and powersports applications, it includes an integrated Alternator Field Disconnect (AFD) that protects your alternator from voltage spikes when switching between battery banks under load.

Key Features:

  • 3-position selector switch (Battery 1 / Both / Battery 2) routes isolated battery banks to all loads
  • Integrated AFD (Alternator Field Disconnect) protects alternator during bank switching
  • Ignition protected — safe for installation aboard gasoline-powered boats
  • Meets American Boat and Yacht Council (ABYC) requirements for battery switches
  • M12 tin-plated copper studs for maximum conductivity and corrosion resistance
  • Accepts 1/2" and M12 ring terminals; 7/8" (22.22mm) stud length accommodates multiple cable terminals
  • Accepts two 4/0 AWG (95mm²) battery cables
  • Tactile textures on knob indicate switch position by feel
  • Versatile case design supports surface or rear panel mounting

Switch Ratings:

  • 10 Second Rating: 2,750A
  • 60 Second Rating: 1,150A
  • 5 Minute Rating: 700A
  • Continuous Rating: 500A
  • Maximum Voltage: 32V DC

The HD-Series is Blue Sea Systems' heavy-duty battery switch line, engineered for high-current marine electrical systems where reliability and safety are critical. UPC: 632085110031.

California Proposition 65 Warning: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (DEHP), known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit P65Warnings.ca.gov.

Good, quick service at a good price.

It was exactly what I wanted and delivery was quick.

Quick easy and affordable love the website found what I was looking for and what I wanted

Easy process

The way it was described it come with everything you needed and it took over a week to get the product to find out it did not come with the lower unit so now it's going to take another 5 to 10 days to get the rest of the product it should've come with everything it's not a replacement air conditioner

Best price, easy to navigate web page

everything is as expected. Cant wait to get my wires.

The fridge has not been installed yet. That's happening today at 4:30. Hopefully I will not have to contact CS.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy