2027 Vancouver Boat Show
After two years away, we’re heading back to the Vancouver International Boat Show, January 27–31, 2027, bigger and better than ever, with lots of prizes to be won. Here’s what...
Seadog Magneto Kill Switch - 420486-1 is in stock and available for pickup within 24hrs.
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✔ Locally owned in Nanaimo, BC
✔ Trusted by boaters and anglers since 1986
✔ Knowledgeable staff with real on-the-water experience
✔ Large in-stock selection of marine & fishing gear
We’re here to help you get the right gear the first time.
We ship across Canada with fast, reliable delivery from our Nanaimo location.
✔ Trusted since 1986
✔ Fast Canada-wide shipping
✔ Expert support available
Need it sooner or have questions? Our team is here to help.
We stand behind the products we sell and want you to shop with confidence.
✔ Easy returns on eligible items
✔ Manufacturer warranties supported
✔ In-store support available if you need help
Some items are non-returnable. Please review our full Return & Refund Policy before completing your purchase.
This Seadog kill switch attaches to your life vest and instantly cuts battery power if you're separated from the helm of your boat or personal watercraft, whether from an accident or being thrown overboard.
This is the Magneto (Red Cap) version, which uses a normally open circuit: with the lanyard clip in place, the circuit stays open, and pulling the lanyard closes the circuit to ground, cutting power. The coiled lanyard measures about 15\" coiled and stretches to roughly 48\", and should be replaced if it becomes worn, cut, or frayed.
The switch mounts into a 5/8\" hole with a maximum panel thickness of 5/8\", and handles up to 5A at 12V. It's built from weatherproof injection-molded nylon and Delrin with brass terminals. Test the switch for proper function before each use.
| Bulk | Display | A | B | Kill Style | Volts | Max Amp | Weight | Std. Pack |
|---|---|---|---|---|---|---|---|---|
| 420486 | 420486-1 | 5/8\" | 5/8\" | Magneto (Red Cap) Open Circuit | 12 | 5 | .08 | 10 ea |
It attaches to your life vest and instantly cuts battery power if you're separated from the helm of your boat or personal watercraft.
This is the Magneto (Red Cap) version, which uses a normally open circuit. Pulling the lanyard closes the circuit to ground and cuts power. The Ignition (Gray Cap) version works the opposite way, using a normally closed circuit that opens when the lanyard is pulled.
The coiled lanyard is approximately 15 inches coiled and stretches to about 48 inches. Replace it if it becomes worn, cut, or frayed.
The mounting hole is 5/8 inch in diameter, with a maximum panel thickness of 5/8 inch.
The switch is rated for 12 volts and a maximum draw of 5 amps.