T Tocas 50A Marine Circuit Breaker Switchable 12–72V IP67 Resettable, Compact Surface-Mount

The T Tocas E9 is a switchable, resettable 50 amp marine circuit breaker that protects and isolates 12V–72V DC systems while offering IP67 water resistance and ignition protection.

Compact and purpose-built for marine, RV, and automotive DC installations, the E9 combines a manual reset push-button with a switchable disconnect function. Its 1/4"-28 threaded studs, extended surface-mount footprint, and thermoplastic housing meet robust standards (SAE J1625, J1171, UL1500), making this breaker a direct replacement for a conventional 50A fuse where repeated resets and a built-in disconnect are preferred.

How does the E9 protect electrical systems on boats and vehicles?

The E9 interrupts overloads and short circuits by tripping at overcurrent, and its manual reset restores service without replacing a fuse. Because it is ignition-protected and UL-rated, it’s suitable where sparking must be minimized.

• Trip threshold sized to break at overcurrent situations for 50A circuits
• Manual Type III push-button reset avoids fuse replacement downtime
• Ignition protection reduces risk of sparks in fuel-vapor environments
• UL 94V-0 thermoplastic housing resists flame and heat

Can I use this breaker as a battery disconnect switch?

Yes. The E9’s switchable reset button serves as an effective battery disconnect for maintenance or storage, isolating the load from the battery without extra wiring. It’s compact enough to mount near battery banks or in tight electrical compartments.

• Switchable push-button provides manual open/close control
• Works across 12V to 72V DC systems for flexibility
• Extended surface-mount design simplifies panel or bulkhead installation
• 1/4"-28 studs accept common lug sizes for secure connections

Is the E9 suited for harsh, wet, or outdoor installations?

The E9 is IP67-rated, meaning it’s sealed against dust and temporary immersion, and its UL-certified materials withstand marine conditions. That makes it a practical choice for decks, engine compartments, and exposed RV or truck installations where moisture resistance is required.

• IP67 rating for dust-tight sealing and immersion protection
• UV- and chemical-resistant thermoplastic housing suitable for outdoor use
• Corrosion-resistant studs and terminals for marine environments
• Resettable design reduces replacement frequency in remote locations

What equipment and applications is this 50A breaker compatible with?

The E9 is designed for a wide range of DC-powered gear common to boats, RVs, and commercial vehicles. It’s particularly useful where a resettable protective device and a manual disconnect are both desirable.

• Mini trolling motors, marine electronics, and battery banks
• RV house systems, DC audio amplifiers, and inverters
• Truck and bus auxiliary circuits, battery chargers, and lighting
• Solar and off-grid 12V–72V DC arrays requiring a resettable disconnect

Who is this for? Installers, boat owners, RV builders, fleet managers, and hobbyists who need a reliable, serviceable 50 amp DC protection device will value the T Tocas E9. It’s ideal when you want a compact, resettable breaker with a manual disconnect, solid environmental sealing, and industry-recognized safety certifications for ignition-prone or outdoor electrical systems.