Sea-Dog Lighted SPDT Toggle Switch | 420123-1
Sea-Dog Lighted SPDT Toggle Switch | 420123-1 — Product description
The Sea-Dog on-off-on lighted toggle switch runs a 12-volt circuit two ways from one lever, with a center-off position and a tip that lights up when it's live. Rated 15 amps, built from brass, nylon, and polycarbonate to hold up to a damp helm.
The Sea-Dog on-off-on toggle switch is a lighted SPDT switch built for the helm, the dash, or anywhere on the boat you need to run a 12-volt circuit two ways from one lever. Center position is off. Flip it up or down and you close one of two circuits. The tip lights up so you can see at a glance whether it's live, which matters at night when the dash is dark and you're reaching by feel.
This is a single pole double throw switch, so one input feeds one of two outputs depending on which way you throw the lever. That's the setup you want for a two-way accessory, a pair of light banks you toggle between, or any circuit where you're choosing one of two loads. It handles 15 amps at 12 volts DC, which covers most cabin lighting, accessory, and small-pump loads on a typical boat.
Wiring is straightforward. Five blade terminals on the back take standard push-on connectors, so you're not soldering anything unless you want to. The extra terminals feed the lighted tip. Sea-Dog builds the contacts from brass and the body and lever from nylon and polycarbonate, so it stands up to the damp better than a bargain switch that corrodes its contacts after a season.
A couple of honest notes. This is a 15-amp switch, so don't put it on a windlass, a big bilge pump, or anything that pulls serious current. Match the switch to the load. And while the housing shrugs off spray and humidity, it isn't a sealed switch, so mount it somewhere it won't sit under a constant stream of water. Behind a console, on a dash panel, inside a cabin. That's its home.
If you're replacing a dead switch, check that you actually need the on-off-on function before you order. A plain on-off switch won't drop into a circuit wired for two throws, and this one won't act like a simple single-throw either. When in doubt, count your terminals and give us a call. We'll sort out what you've got.
Key Features
- On-off-on action with a true center-off position for clean two-way switching
- Single pole double throw routes one input to either of two circuits
- Lighted tip shows circuit status at a glance in a dark cabin or at the helm
- Rated 15 amps at 12 volts DC for lighting, accessory, and small-pump loads
- Five blade terminals accept standard push-on connectors, no soldering required
- Brass contacts with nylon and polycarbonate body resist corrosion in a damp marine setting
- Black lever and body blend into most dash and console panels
Why Buy from NVN Marine
- Authorized Sea-Dog reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Sea-Dog On-Off-On Lighted Toggle Switch |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 420123-1 |
| UPC | 035514422598 |
| Switch Function | On-Off-On |
| Voltage | 12 Volt DC |
| Amperage | 15 Ampere |
| Switch Type | Toggle Switch |
| Actuator | Lever |
| Circuit | Single Pole Double Throw |
| Terminals | 5 Blade Terminals |
| Illumination | Lighted Tip |
| Color | Black |
| Material | Brass, Nylon, Polycarbonate |
Frequently asked questions
What does on-off-on mean on this switch?
The center position is off. Flip the lever up and you close one circuit, flip it down and you close the other. It's a maintained switch, so it stays put in whichever position you set it.
What's the current rating?
It's rated for 15 amps at 12 volts DC. That covers most cabin lighting, accessories, and small pumps. Don't put it on a windlass or a high-draw pump.
Is this switch waterproof?
No, it isn't a sealed switch. The brass, nylon, and polycarbonate construction shrugs off spray and humidity, but you'll want to mount it somewhere it won't sit under a steady stream of water, like behind a console or on a dash panel.
What are the five terminals for?
A single pole double throw switch uses one common input plus two outputs, which is three terminals. The other two feed the lighted tip. They all take standard blade connectors.
Can I use it as a plain on-off switch?
Not directly. This is a single pole double throw on-off-on, so it's wired for two active positions. A circuit built for a simple on-off switch won't map to these terminals without rewiring.
Do the terminals need soldering?
No. The five blade terminals take standard push-on spade connectors, so you can wire it up with a crimp tool and be done.
