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Sea-Dog Line 420108-1 SPDT Toggle Switch On/Off/On 15A 12V Marine

Manufacturer

Sea-Dog Line

<p>For over a century, Sea-Dog Line has stood as a cornerstone of the marine hardware industry, delivering innovative solutions that meet the demanding needs of recreational and commercial boaters. Founded in the early 1920s by entrepreneur Hans "Action" Broson Sneve, the company began with a unique sales approach—showcasing marine hardware aboard a 55-foot cruiser that sailed from Alaska to Mexico. This hands-on philosophy continues to shape Sea-Dog's commitment to producing hardware that performs reliably in the harshest saltwater environments.</p><h3>Industry-Leading Marine Hardware Manufacturing</h3><p>Based in Everett, Washington, Sea-Dog Corporation operates a 75,000-square-foot warehouse stocking over 8 million parts and runs an injection molding facility with 16 machines producing more than 17 million components annually. The company's extensive product line spans anchoring systems, deck hardware, electrical components, plumbing fittings, and lighting solutions—all engineered with marine-grade materials like stainless steel, brass, and UV-resistant polymers. Sea-Dog's recognition as a multiple-time NMDA Supplier of the Year underscores the brand's excellence in both product quality and customer service, while their on-staff ABYC-certified marine technician provides invaluable installation and technical support.</p><h3>Premium Marine Components for Every Vessel</h3><p>Sea-Dog's <a href="/7549-sea-dog-line-windshield-washers-wipers-replacement-motors-201195">windshield washers, wipers, and replacement motors</a> deliver crystal-clear visibility during inclement weather, with both manual and electric options featuring corrosion-resistant stainless steel arms and UV-stable blades designed specifically for marine windshield applications. Their <a href="/7549-sea-dog-line-electric-horns-200351">electric horns</a> include the popular MaxBlast line, which passed rigorous 600-hour salt spray testing while meeting US Coast Guard COLREGS and ABYC standards for audible warning devices. For fuel and water system integrity, Sea-Dog's <a href="/7549-sea-dog-line-deck-fills-200307">deck fills</a> provide secure, leak-free access points constructed from durable stainless steel with snap-in designs that resist corrosion in saltwater environments.</p><p>When maneuvering in low-light conditions, Sea-Dog's <a href="/7549-sea-dog-line-docking-lights-200335">docking lights</a> offer bright LED illumination with minimal power draw, featuring injection-molded housings that withstand impacts and temperature extremes. Proper airflow is essential for preventing moisture buildup below deck, and Sea-Dog's <a href="/7549-sea-dog-line-hose-and-cowl-vents-200534">hose and cowl vents</a> deliver reliable ventilation with low-profile designs that include snap-in deck plates for bilge applications or dorade box compatibility for cabin use. Each product reflects Sea-Dog's century-long dedication to manufacturing hardware that recreational and professional mariners can trust, voyage after voyage.</p>

Part Number

420108-1
06/01/2036 6:07 PM
Sale Price

$6.76

In Stock (10+)

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sea-Dog Line 420108-1 is a water-resistant SPDT (Single Pole Double Throw) toggle switch designed for marine and automotive applications. This heavy-duty switch provides On/Off/On functionality, allowing you to control two separate circuits from a single switching position.

Key Features:

  • SPDT (Single Pole Double Throw) configuration with On/Off/On operation
  • Water-resistant construction with locking ring and lever seal
  • Durable stamped brass contacts for reliable conductivity
  • Injection molded nylon and polycarbonate housing for corrosion resistance
  • Protruding cap nut for easy operation
  • Rated 15 amps at 12V DC
  • Easy installation for panel mounting applications

Ideal for marine electrical systems, RVs, off-road vehicles, and other 12-volt DC applications where reliable switching and moisture protection are essential. The robust construction ensures long-lasting performance in demanding environments.

Products specifications

Package

Retail

Positions

On/Off/On

Terminals

3 Blade

Type

SPDT

First of all, I can not believe how fast I recieved my order, 2 DAYS! Best of all, the instructions made it easy for a non mechanic like me to install.

Easy to use

I hope the part fits my car

good

Great pricing ! Items in stock !! Thank you

Great prices and fast shipping!

Quick and easy

AWesome service. questions answered immediately via chat and order was en route via fed ex within 6 hours!!!!!!

Best products at the best prices

I was a bit skeptical about your website since I've never purchased from you before, but your customer service representative was great at answering my questions. Thanks.

Very easy to talk to on the phone and excellent service.

Great Price - Shipped the following day - Very please

thanks, didn't know these are rare

Not pleased when I got an error when paying with credit card.

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