T Tocas 150A DC Circuit Breaker Manual Reset, 12–48V IP67 Waterproof Ignition-Protected

The T Tocas 150 Amp DC circuit breaker is a compact, manual-reset protective switch rated for 12–48V systems with IP67 waterproofing and ignition protection.

Built for demanding mobile and marine electrical systems, this Type III breaker combines high interrupt capacity, thermalplastic housing, and a push-button manual reset for quick field service. It’s designed to protect auxiliary circuits such as battery chargers, audio systems, and accessory loads on trucks, RVs, buses and boats while resisting moisture, vibration and temperature extremes.

How does this breaker protect my 12–48V electrical circuits?

The breaker interrupts fault currents automatically and gives you a manual reset option to restore service without replacing a fuse. It meets SAE and UL ignition-protection standards so it’s suitable for vehicle and marine auxiliary circuits where spark suppression and reliability matter.

• 150 A trip rating with Type III manual-reset operation
• Interrupt capacities: 2,500 A at 14 Vdc, 1,500 A at 48 Vdc
• UL 94V-0 thermalplastic housing resists heat and flame
• Ignition-protected per UL1500 and compliant with SAE J1625/J1171

Is this device weatherproof and durable enough for marine use?

Yes — the housing is molded from UL-rated thermalplastic and the unit carries an IP67 rating, protecting the internal mechanism from dust and temporary immersion. The design also withstands a wide operating temperature range for hot engine bays and cold climates.

• IP67 sealing prevents water ingress in wet environments
• Operating range from -32°C to 82°C (-25°F to 180°F)
• Compact, lightweight construction for tight mounting spaces
• Corrosion-resistant materials suitable for marine exposure

How easy is it to install and service this circuit breaker?

Installation is straightforward: the breaker mounts in-line with the positive conductor and the push-button reset provides a clear, repeatable method to restore circuits after trips. The compact footprint helps when space is limited on panels or bulkheads.

• Manual reset button serves also as an on/off switch
• Compact form factor for dashboard, under-seat or engine compartment mounting
• Meets vehicle dimensional and safety guidance for auxiliary circuits
• No fuse replacement required after a trip—just reset

What electrical loads is this breaker best suited for?

This 150 A breaker is intended for auxiliary and accessory circuits rather than primary propulsion systems. Typical applications include DC audio amplifiers, battery chargers, inverter feed, lighting banks and other medium-current loads in mobile and marine platforms.

• Auxiliary/ accessory circuits on trucks, buses and RVs
• Marine accessory circuits and battery charging paths
• DC audio systems and inverter input protection
• Any 12–48 Vdc application requiring compact manual reset protection

Who is this for: technicians, fleet managers, RV owners, boat builders and hobbyists who need a rugged, serviceable overcurrent protector for 12–48V accessory circuits. If you want a resettable, ignition-protected device with high interrupt capability and IP67 sealing for mobile or marine environments, the T Tocas 150 Amp manual-reset DC circuit breaker is engineered for those uses.