Sea-Dog SD-17 70A 48V DC Circuit Breaker
Sea-Dog SD-17 70A 48V DC Circuit Breaker — Product description
The Sea-Dog SD-17 is a 70-amp resettable thermal circuit breaker built for 48-volt DC systems on the water. It protects your wiring and gear from overloads and shorts, and when it trips you just flip it back on. Panel-mount body, IP67-sealed, and built to marine standards. No fuses to hunt for in a drawer.
The Sea-Dog SD-17 is a resettable thermal circuit breaker rated for 70 amps on a 48-volt DC system. It's the kind of part you don't think about until you need it, and then you're really glad it's there. When a circuit pulls more current than it should, this breaker trips and cuts the power before your wiring cooks or your gear gets damaged. No blown fuse to dig out of a drawer at the worst possible moment. You just reset it and get back to what you were doing.
The 48-volt rating is the tell here. This isn't a breaker for your nav lights or your stereo. It's built for the heavy stuff. Think 48-volt trolling motors, windlasses, bow thrusters, and larger house-bank runs where a standard 12-volt breaker simply won't hold up to the voltage. If you've rigged up a serious electric drive or a high-draw accessory, this is the protection that circuit deserves.
What makes the SD-17 handy is the manual switchable reset. It works as a breaker and a switch at the same time. You can flip it by hand to kill the circuit for service or storage, then flip it right back on. That means one part does two jobs on your panel, and you don't need a separate disconnect switch upstream.
Sealing is where a lot of cheap breakers fall down, and this one doesn't. The SD-17 carries an IP67 protection rating, so it shrugs off dust and short-term water immersion. Mount it in a splashy center console, a semi-exposed helm, or down near the bilge, and it'll keep doing its job. The 1/4 inch-28 stud terminals give you a proper high-current landing for ring terminals, and they lock down tight so vibration won't loosen the connection over a season of pounding.
Installation is straightforward. It's a panel-mount design, so it drops into a dash or breaker-panel opening for a clean, finished look. And it's built to the standards that matter on the water. The SD-17 meets SAE J1625, ABYC-E11, UL1077, and SAE J1171, which is exactly the paperwork a surveyor or an insurer likes to see behind your electrical work. Black plastic housing, single breaker, ready to wire in.
Key Features
- 70 amp rating protects heavy DC loads like 48-volt trolling motors, windlasses, and thrusters without nuisance tripping.
- 48 volt DC design matches high-voltage trolling motor and house-bank systems where a 12-volt breaker won't hold up.
- Manual switchable reset works as a breaker and an on/off switch in one, so you can kill the circuit right at the panel.
- IP67 protection rating seals out dust and short-term water immersion for splash-prone consoles and bilge-area installs.
- 1/4 inch-28 stud terminals give you a solid, high-current connection that won't back out with vibration.
- Panel-mount body drops into an existing dash or breaker-panel opening for a clean, finished install.
- Meets SAE J1625, ABYC-E11, UL1077, and SAE J1171 standards that surveyors and insurers look for.
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 | SD-17 Resettable Thermal Circuit Breaker; 70 Amp; 48 Volt DC; Manual/ Switchable Reset; Black; Plastic; Panel Mount; 1/4 Inch-28 Stud Terminal; SAE J1625/ ABYC-E11/ UL1077/ SAE J1171 Standard; IP67 Protection Rating; Single |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 830195 |
| UPC | 035514830249 |
| Model | SD-17 |
| Type | Resettable Thermal Circuit Breaker |
| Amperage | 70 Amp |
| Voltage | 48 Volt DC |
| Reset Type | Manual/ Switchable Reset |
| Color | Black |
| Material | Plastic |
| Mounting | Panel Mount |
| Terminal | 1/4 Inch-28 Stud Terminal |
| Standards | SAE J1625, ABYC-E11, UL1077, SAE J1171 |
| Protection Rating | IP67 |
| Quantity | Single |
Frequently asked questions
What amperage is the Sea-Dog SD-17 rated for?
It's a 70 amp breaker rated for a 48-volt DC circuit.
Can I use this breaker as an on/off switch too?
Yes. It has a manual switchable reset, so you can trip it by hand to cut the circuit and flip it back on when you're ready. One part does both jobs.
Is the SD-17 waterproof?
It carries an IP67 protection rating, which means it's sealed against dust and short-term water immersion. It holds up in splash-prone consoles and semi-exposed helm or bilge spots.
What size are the terminals?
They're 1/4 inch-28 threaded studs. Ring terminals land on the studs and lock down with nuts for a vibration-proof, high-current connection.
How does it mount?
It's a panel-mount breaker. It installs into a dash or breaker-panel opening for a clean, finished look.
What standards does the SD-17 meet?
It's built to SAE J1625, ABYC-E11, UL1077, and SAE J1171.
