Sea-Dog SD-17 70A Resettable Circuit Breaker, 48V DC
Sea-Dog SD-17 70A Resettable Circuit Breaker, 48V DC — Product description
The Sea-Dog SD-17 is a 70-amp resettable thermal circuit breaker built to protect your DC circuits and double as a manual on/off switch. Rated to 48 volts DC with an IP67 sealed housing, it's a clean, reliable way to guard a windlass, inverter, or high-draw accessory circuit out on the water.
Every high-draw circuit on your boat needs protection, and the Sea-Dog SD-17 handles that job without the fuss of a blown fuse you have to dig out and replace. It's a resettable thermal circuit breaker rated at 70 amps and 48 volts DC. When the circuit pulls more current than it should, the breaker trips. You clear the fault, push the reset, and you're back in business. No spare fuses to hunt for in a rolling locker.
What makes the SD-17 handy is the switchable design. The lever doesn't just reset after a trip, it lets you manually open the circuit whenever you want. So this breaker pulls double duty as an on/off switch for the circuit it protects. Wire it to a windlass, a bow thruster, an inverter, or any accessory that draws serious current, and you get both overcurrent protection and a convenient manual disconnect in one part.
It's built for life on the water. The housing carries an IP67 protection rating, so it shrugs off spray, rain, and the occasional dunk. The black plastic body mounts to any flat surface, and power lands on a pair of 1/4 inch-28 stud terminals that take a ring lug and a nut for a solid, vibration-proof connection. That stud setup is what you want on a boat, where a push-on spade terminal can shake loose over a season of pounding.
The SD-17 meets the standards that matter for marine wiring. It's built to SAE J1625, ABYC E-11, UL 1077, and SAE J1171, so it drops right into an ABYC-compliant DC system. Mount it close to the battery or power source, keep your cable runs short, and size your ring lugs to the 1/4 inch-28 studs before you tighten down. If you're rigging a 12, 24, or 48-volt circuit and need clean, resettable protection you can also flip by hand, this is a straightforward, sealed answer. Single breaker, ready to wire in.
Key Features
- 70-amp thermal trip rating protects high-draw DC circuits like windlasses, thrusters, and inverters
- Rated to 48 volts DC, so it covers 12V, 24V, and 48V systems
- Switchable design doubles as a manual on/off switch for the protected circuit
- Manual reset clears a trip in seconds, with no spare fuses to carry
- IP67-rated sealed housing stands up to spray, rain, and washdowns
- 1/4 inch-28 stud terminals take ring lugs for a vibration-proof connection
- Surface-mount black plastic body installs on any flat panel
- Built to SAE J1625, ABYC E-11, UL 1077, and SAE J1171 standards
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; Switchable/ Manual Reset; Black; Plastic; Surface 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 | 830225 |
| UPC | 035514830348 |
| Series | SD-17 |
| Breaker Type | Resettable Thermal |
| Amperage | 70 Amp |
| Voltage | 48 Volt DC |
| Reset Type | Switchable / Manual Reset |
| Color | Black |
| Housing Material | Plastic |
| Mounting | Surface 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 does the switchable design on the SD-17 do?
The lever lets you manually open the circuit anytime, so the breaker also works as an on/off switch for whatever it protects, not just an automatic trip on overcurrent.
How many amps does the SD-17 handle?
It's rated at 70 amps. The breaker trips when the circuit draws more than that, protecting both your wiring and the connected gear.
What voltage can I use it on?
It's rated up to 48 volts DC, which covers 12-volt, 24-volt, and 48-volt marine systems.
Is it waterproof?
The housing carries an IP67 protection rating, so it handles spray, rain, and brief submersion. It's built for exposed and semi-exposed mounting locations.
How do the wires connect?
Power lands on two 1/4 inch-28 stud terminals. You crimp a ring lug on each cable and secure it with a nut for a solid connection that won't shake loose.
How do I reset it after a trip?
Clear the fault that caused the overcurrent, then push the manual reset. There's nothing to replace, unlike a blown fuse.
Does it meet ABYC standards?
Yes. It's built to ABYC E-11 along with SAE J1625, UL 1077, and SAE J1171, so it fits an ABYC-compliant DC installation.
