Sea-Dog SD-17 30A 48V Resettable Circuit Breaker
Sea-Dog SD-17 30A 48V Resettable Circuit Breaker — Product description
The Sea-Dog SD-17 is a 30-amp resettable thermal circuit breaker rated to 48 volts DC. It trips on overload, then flips back by hand, so there's no fuse to replace. IP67-sealed and built to ABYC and UL1077 standards for real marine wiring.
The Sea-Dog SD-17 is a resettable thermal circuit breaker built to protect a 30-amp DC circuit on your boat. It's rated up to 48 volts DC, so it covers everything from a 12-volt accessory run to a 36 or 48-volt trolling motor feed. When the current climbs past 30 amps, the breaker trips and cuts the circuit before your wiring or your gear takes the hit.
What sets this one apart is the manual, switchable reset. After a fault clears, you flip it back by hand and you're running again. No fuse to dig out of a locker, no spare to hunt down at the worst possible moment. You can also use the switch to kill the circuit on purpose when you're working on the wiring or laying the boat up for the season.
The housing is black plastic with an IP67 protection rating, so it shrugs off dust and holds up to short submersion. That matters in a bilge, a splashy console, or an open center console where spray finds everything eventually. It mounts to a flat surface and lands power on a pair of 1/4 inch-28 stud terminals, which take a ring terminal and a nut for a clean, vibration-resistant connection.
Sea-Dog built the SD-17 to the standards that matter for marine work. ABYC E-11 covers AC and DC systems on boats, UL1077 covers supplementary protection, and it also meets SAE J1625 and SAE J1171. If a surveyor or an insurer ever asks whether your overcurrent protection is up to code, this one checks the boxes.
It's a solid fit for trolling motor circuits, windlass feeds, electronics buses, bilge and washdown pumps, and any 30-amp branch that deserves real protection. Wire it in near the battery or the panel, size your cable to the load, and you've got a reset you can reach instead of a fuse you have to carry spares for.
Key Features
- 30-amp trip rating cuts the circuit before an overload can cook your wiring or your gear
- Rated to 48 volts DC, so it covers 12V, 24V, 36V and 48V systems, including trolling motor feeds
- Manual, switchable reset flips back by hand after a fault, with no fuse to replace
- Switchable design also lets you manually kill the circuit to isolate it for service or storage
- IP67-rated black plastic housing resists dust and holds up to short submersion in wet bilge and console mounts
- 1/4 inch-28 stud terminals accept ring terminals for a solid, vibration-resistant connection
- Surface-mount body bolts to a flat panel or bulkhead
- Built to ABYC E-11, UL1077, SAE J1625 and SAE J1171 marine 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, 30 Amp, 48 Volt DC |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 830221 |
| UPC | 035514830300 |
| Series | SD-17 |
| Amperage | 30 Amp |
| Voltage | 48 Volt DC |
| Reset Type | Manual/Switchable Reset |
| Color | Black |
| 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
How do I reset the SD-17 after it trips?
It uses a manual, switchable reset. Once the fault clears, you flip it back by hand and the circuit is live again. There's no fuse to pull or replace.
What size circuit is this breaker for?
It's a 30-amp breaker rated up to 48 volts DC. Size your wire to the 30-amp load and wire the breaker in near the battery or the panel.
Can I use it on a 12-volt or 24-volt system?
Yes. The 48-volt DC rating is the maximum, so it works fine on 12V, 24V and 36V systems as well.
Is the SD-17 waterproof?
It carries an IP67 protection rating, which means it's dust-tight and withstands temporary submersion. It's built for wet spots like a bilge or a splashy console, not for continuous underwater use.
What terminals does it use?
It has 1/4 inch-28 stud terminals. Crimp ring terminals onto your cables and secure them with a nut for a clean, vibration-resistant connection.
Can I use it as an on/off switch?
Yes. The switchable reset lets you flip it off by hand to isolate the circuit when you're servicing the wiring or storing the boat.
Is it approved for marine wiring?
Sea-Dog builds it to ABYC E-11, UL1077, SAE J1625 and SAE J1171, the standards that cover overcurrent protection on boats.
