Sea-Dog Thermal Circuit Breaker - 30 Amp, Single Pole Panel Mount

This Sea-Dog thermal circuit breaker delivers reliable 30 amp overcurrent protection for onboard 12-volt DC electrical circuits. Built as a single-pole, panel-mount unit, it installs directly into a boat's switch or breaker panel to protect wiring and connected equipment from overload and short-circuit conditions. When the rated current is exceeded, the internal thermal element trips the breaker, opening the circuit before wiring or components can be damaged; once the fault is cleared, the breaker can be reset and returned to service, unlike a one-time fuse.

The panel-mount design keeps the breaker accessible at the helm or breaker panel for quick manual reset, making it a straightforward upgrade or replacement for boat owners standardizing their electrical panel on a single breaker type and amperage. As a single-pole breaker rated for 30 amps, it is sized for higher-draw 12-volt circuits such as pumps, accessories, or other equipment drawing up to that threshold. It is sold as a standalone breaker for installation into an existing panel cutout rather than as part of a switch panel assembly.

Specifications

• Brand: Sea-Dog
• Manufacturer Part Number: 420830-1
• Current Rating: 30 Amps
• Circuit Breaker Type: Standard
• Mounting Type: Panel Mount
• Number of Poles: 1
• UPC: 035514420327
• GTIN: 00035514420327
• Weight: 0.084 pounds
• Category: Marine Circuit Breaker

Frequently Asked Questions

What amperage is the Sea-Dog 420830-1 circuit breaker rated for? It is rated for 30 amps, sized for higher-draw 12-volt DC marine circuits.

Is this a single-pole or double-pole breaker? The Sea-Dog 420830-1 is a single-pole (1-pole) circuit breaker.

How does the Sea-Dog 420830-1 mount in a boat's electrical panel? It is a panel-mount breaker, designed to install into a standard breaker or switch panel cutout.

Can this breaker be reset after it trips? Yes, as a thermal circuit breaker the Sea-Dog 420830-1 can be reset once the overload or fault condition is cleared, rather than being replaced like a fuse.

What does the circuit breaker type mean for this Sea-Dog unit? It is listed as a Standard circuit breaker type, meaning it uses a conventional thermal trip mechanism for overcurrent protection.

How much does the Sea-Dog 420830-1 weigh? The Sea-Dog 420830-1 circuit breaker weighs 0.084 pounds.

What is the UPC for the Sea-Dog 420830-1 breaker? Its UPC is 035514420327 (GTIN 00035514420327).

Does the Sea-Dog 420830-1 include mounting hardware or a panel? This is sold as the breaker itself for installation into an existing panel; a separate switch panel is not included.

What type of circuit is the Sea-Dog 420830-1 designed for? It is designed for 12-volt DC marine electrical circuits protecting pumps, accessories, and other onboard equipment.

Is the Sea-Dog 420830-1 a genuine Sea-Dog part? Yes, part number 420830-1 is a genuine Sea-Dog thermal circuit breaker.