Sea-Dog SD-32 40 Amp Resettable Circuit Breaker
Sea-Dog SD-32 40 Amp Resettable Circuit Breaker — Product description
The Sea-Dog SD-32 is a 40 amp resettable circuit breaker that protects a single DC circuit on your boat. It's a Short Stop style breaker with a manual reset button, so when it trips you just push it back in. No fuse to hunt for, no spare to carry. It's rated IP66 and ships with a cover for the wet spots where marine wiring lives.
This is the breaker you reach for when you want circuit protection you can reset by hand. The SD-32 handles 40 amps on a 28 volt DC system, which covers most of the accessory loads on a typical boat: bilge pumps, livewell pumps, stereo amps, lighting circuits, and small electronics. When it trips on an overload, a button pops out. Push it back in and you're running again.
The housing is nylon and polycarbonate, so it shrugs off salt spray and won't corrode the way a bare metal breaker would. It carries an IP66 protection rating and comes with a cover, which matters when you're mounting it in a splash-prone spot near the battery or behind the helm. Wiring is straightforward with the No. 10-32 stud terminals, so ring connectors slip right over and lock down with nuts.
It's built to SAE J553 and J1171 standards, the specs written for automotive and marine circuit breakers, so it's made for exactly this kind of work. Sold one breaker per pack.
Key Features
- 40 amp rating on 28 volt DC, sized for accessory circuits like pumps, lighting, and small electronics
- Manual push-to-reset button, so there are no fuses to replace or spares to stock
- Nylon and polycarbonate housing resists salt spray and corrosion
- IP66 protection rating and supplied with a cover for wet mounting locations
- No. 10-32 stud terminals and SAE J553/J1171 compliance for standard marine wiring
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 SD-32 Short Stop 40 Amp Resettable Circuit Breaker |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 830355 |
| UPC | 035514830447 |
| Amperage | 40 Amp |
| Voltage | 28 Volt DC |
| Reset Type | Manual Reset |
| Series | Short Stop |
| Housing Material | Nylon / Polycarbonate |
| Terminal Type | No. 10-32 Stud Terminal |
| Protection Rating | IP66 |
| Standards | SAE J553 / J1171 |
| Cover | Included |
| Quantity | Single |
Frequently asked questions
Is the SD-32 resettable or do I replace it after a trip?
It's resettable. When the breaker trips on an overload, a button pops out. Push it back in to restore the circuit. There's nothing to replace and no spare fuse to carry.
What amperage and voltage does it handle?
It's rated for 40 amps on a 28 volt DC system. That voltage rating covers standard 12 volt boat circuits with plenty of headroom.
Can I mount it in a wet area?
Yes. It carries an IP66 protection rating and comes with a cover, so it's suited to splash-prone spots near the battery or behind the helm. Just follow standard marine mounting practice.
How does it wire in?
It uses No. 10-32 stud terminals. Ring terminals slip over the studs and secure with nuts, which is the standard setup for this style of breaker.
Does it meet marine standards?
Yes. It's built to SAE J553 and J1171, the standards written for automotive and marine circuit breakers.
