Sea-Dog SD-17 40A 48V DC Circuit Breaker | 830222
Sea-Dog SD-17 40A 48V DC Circuit Breaker | 830222 — Product description
The Sea-Dog SD-17 is a 40-amp resettable thermal circuit breaker for 12 to 48-volt DC systems, and it earns its spot on any boat that pounds. Trip it, reset it, keep going. No fuses to chase, and the manual switchable reset means it doubles as an on/off switch for the circuit it protects.
The Sea-Dog SD-17 is a 40-amp resettable thermal circuit breaker built for the wet, vibrating reality of a boat's DC system. Rated to 48 volts DC, it protects a circuit the honest way: when the current climbs past 40 amps, the internal thermal element trips and cuts power before the wiring cooks. Reset it and you're back in business. No fuse to hunt for in a tackle drawer, no spare to forget to buy.
What sets this one apart is the manual switchable reset. You can trip it by hand, which means it doubles as an on/off switch for the circuit it protects. Wiring up a bilge blower, a windlass, an inverter feed, or an accessory bank? Kill power at the breaker when you're working on the gear downstream, no need to pull a battery terminal. Flip it back and the circuit's live again.
It's a surface-mount unit in a black plastic housing, so it sits flat against a bulkhead or a panel back and screws down through its mounting holes. Connections land on 1/4 inch-28 stud terminals, so you're torquing ring terminals down onto studs rather than fighting push-on spades. That's the connection you want on anything carrying real current on a boat that pounds. Studs stay put when the ride gets rough.
The SD-17 carries an IP67 protection rating, which means it shrugs off spray, rain, and the occasional dunking that comes with life near the bilge or on an open console. It's built to SAE J1625, ABYC-E11, UL1077, and SAE J1171 standards, so it meets the marine wiring codes a surveyor or an insurer cares about. If you're rigging a new circuit or replacing a breaker that's gotten weak and nuisance-trips, this is a straightforward, code-legal fix. Not sure whether 40 amps is right for your load? The rule of thumb is to size the breaker to the wire, not the device. Give us a shout and we'll help you get it right.
Key Features
- 40-amp thermal trip point protects the circuit and the wiring, not just the device downstream
- Manual switchable reset lets you trip it by hand, so it doubles as an on/off switch for the protected circuit
- Rated to 48 volts DC, covering 12V, 24V, 36V, and 48V marine systems
- 1/4 inch-28 stud terminals for secure ring-terminal connections on high-current circuits
- IP67 protection rating shrugs off spray, rain, and splash near the bilge or open console
- Built to SAE J1625, ABYC-E11, UL1077, and SAE J1171 standards for code-compliant marine wiring
- Surface-mount black plastic housing bolts flat to a bulkhead or panel back
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, 40 Amp, 48 Volt DC |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 830222 |
| UPC | 035514830317 |
| Series | SD-17 |
| Type | Resettable Thermal Circuit Breaker |
| Amperage | 40 Amp |
| Voltage | 48 Volt DC |
| Reset Type | Manual / Switchable |
| 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
Can this breaker be used as an on/off switch?
Yes. The manual switchable reset lets you trip it by hand, so it works as an on/off switch for the circuit it protects. That's handy when you want to kill power to a blower, windlass, or accessory bank without pulling a battery terminal.
What voltage systems does it work with?
It's rated to 48 volts DC, so it's good for 12V, 24V, 36V, and 48V marine systems. A breaker's voltage rating is a ceiling, so anything at or below 48V DC is fine.
How do I know if 40 amps is the right size?
Size the breaker to the wire gauge, not the device. The breaker's job is to protect the wiring from overheating before it fails. If you're unsure what your circuit needs, tell us the wire size and run length and we'll help you get it right.
How does it mount?
It's a surface-mount unit. The black plastic housing sits flat against a bulkhead or panel back and screws down through its mounting holes. Connections land on 1/4 inch-28 stud terminals, so you'll run ring terminals onto the studs.
Is it waterproof?
It carries an IP67 protection rating, so it handles spray, rain, and brief submersion. That's the protection you want anywhere near the bilge or on an open console. Mount it where it can drain and it'll hold up.
Does it meet marine wiring codes?
Yes. It's built to SAE J1625, ABYC-E11, UL1077, and SAE J1171 standards, which are the specs a surveyor or insurer looks for on a marine DC circuit.
