T Tocas 100A DC Circuit Breaker 12V–48V Manual Reset, IP67 Waterproof, Ignition-Protected

The T Tocas E9 is a 100 amp DC manual-reset circuit breaker built for 12V–48V systems, offering waterproof protection, ignition safety certifications, and a compact surface-mount design for demanding marine and vehicle electrical installs.

Compact yet robust, the E9 100A circuit breaker from T Tocas combines high-amperage protection with manual reset convenience and industry-grade safety ratings. It’s engineered for DC environments where reliability matters—boats, RVs, trucks, and off-grid battery systems—providing a reusable interrupting device that helps protect auxiliary circuits and accessories from overloads and short faults without the need to replace fuses.

How does the E9 keep my 12V–48V system safe?

The E9 interrupts excessive current flows up to 100 amps and can be reset manually once the fault is cleared, which reduces downtime and maintenance costs compared with single-use fuses. Its thermoplastic housing and ignition-protected design lower ignition and heat risks in sensitive environments.

• 100A trip threshold suitable for heavy accessory loads and trolling motors
• UL 94V-0 thermoplastic housing for enhanced fire resistance
• Certified to S.A.E. J1625, J1171 and UL1500 ignition-protected standards
• Manual reset switch for quick recovery after a fault

Will the breaker survive wet or dusty environments?

Yes—the E9 carries an IP67 rating, meaning it resists dust ingress and withstands temporary immersion in water. That makes it suitable for marine decks, engine compartments, and exposed vehicle locations where splash, spray, or rain may occur.

• IP67 waterproof protection against dust and short-term immersion
• Sealed switch button and housing to prevent contamination
• Durable surface mount studs keep connections secure in vibration-prone settings

How easy is it to install and service?

Installation is straightforward: the E9 uses 1/4"-28 threaded studs for robust, solderless connections and an extended surface-mount footprint to accommodate common panel and bulkhead placements. Servicing is simplified because the breaker is resettable—no spare fuses are required—and the button provides clear manual control.

• 1/4"-28 threaded studs for ring-terminal or lug connections
• Extended surface-mount design for stable mounting on panels or rails
• Compact, lightweight form factor to save space

Where is the E9 best used in real-world setups?

Designed with versatile DC accessory protection in mind, the E9 fits a wide range of secondary circuits where repeated reset capability is valuable. Typical uses include trolling motors, fish finder and sonar circuits, battery chargers, audio systems, lighting banks, and auxiliary power feeds on vehicles and vessels.

• Marine: trolling motors, bilge pumps, accessory banks
• Recreational vehicles and trucks: lighting, inverters, chargers
• Commercial vehicles and buses: auxiliary circuits and audio systems

Who is this for? The T Tocas E9 100A manual-reset breaker is aimed at boat owners, RVers, fleet technicians, and hobbyists who need a reusable, rugged protection device for 12V–48V DC accessories. If you install or maintain marine or vehicle electrical systems and require ignition-protected, waterproof protection that’s easy to mount and reset, the E9 provides a dependable, certified solution.