Sea-Dog 50A Inline Resettable Circuit Breaker 420845-1
Sea-Dog 50A Inline Resettable Circuit Breaker 420845-1 — Product description
This Sea-Dog inline resettable circuit breaker protects a single high-draw DC circuit at 50 amps, rated for 12 volts AC or 24 volts DC. When it trips, you just push the manual reset button, no spare fuses needed. The weather-tough nylon and polycarbonate housing and brass #10-32 studs make it a clean, reliable pick for windlass, thruster, and accessory runs.
Every heavy DC circuit on a boat needs overcurrent protection, and this Sea-Dog inline resettable circuit breaker is the simple way to get it. It's rated for 50 amps at 12 volts AC or 24 volts DC, so it drops into a windlass feed, a bow thruster run, an inverter branch, or any accessory circuit that pulls real current. When it trips, you don't go hunting for a spare fuse. You push the manual reset button and you're back in business.
The housing is molded from nylon and polycarbonate, so it stands up to the damp, salty air in a bilge or a console locker. Two brass #10-32 studs with nuts give you a solid, low-resistance connection for ring terminals, and the compact 1-5/16 inch by 1-3/8 inch by 1-7/16 inch body tucks into tight spots behind the helm. It's an inline breaker, so it wires straight into the run without needing a panel.
Good pick for anglers and cruisers who want protection they can reset themselves, right at the source.
Key Features
- 50-amp rating at 12V AC / 24V DC handles windlasses, thrusters, inverters, and other high-draw circuits
- Manual push-button reset means no spare fuses to carry or swap after a trip
- Nylon and polycarbonate housing stands up to bilge damp and salt air
- Brass #10-32 studs and nuts give a solid, low-resistance ring-terminal connection
- Compact 1-5/16 in. x 1-3/8 in. x 1-7/16 in. body fits tight spaces behind the helm
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 | Inline Resettable Circuit Breaker, 50 Ampere, 12 Volt AC / 24 Volt DC |
|---|---|
| Brand | Sea-Dog |
| Manufacturer Part Number | 420845-1 |
| UPC | 035514423809 |
| Amperage | 50 Ampere |
| Voltage | 12 Volt AC / 24 Volt DC |
| Reset Type | Manual Reset Button |
| Dimensions (W x D x H) | 1-5/16 in. x 1-3/8 in. x 1-7/16 in. |
| Housing Material | Nylon / Polycarbonate |
| Terminal Studs | Brass #10-32 Studs and Nuts |
| Quantity | Single |
Frequently asked questions
What amperage is this breaker rated for?
It's a 50-amp breaker, rated for 12 volts AC or 24 volts DC. That covers most heavy DC accessory circuits like windlasses, thrusters, and inverter branches.
How do I reset it after it trips?
Just push the manual reset button on the breaker. There's no fuse to replace, so you can get the circuit back up right at the source.
What size are the terminal connections?
It uses two brass #10-32 studs with nuts. Ring terminals slip right over the studs for a solid, low-resistance connection.
Does this need a panel to mount, or is it inline?
It's an inline breaker. It wires straight into the circuit run without a panel, which makes it easy to install close to the load or the battery.
