TTocas 150A DC Circuit Breaker | Manual Reset | 12-48V | IP67 Waterproof

Protect the backbone of your electrical system with confidence

The TTocas 150A DC circuit breaker is built to safeguard both everyday and demanding setups. Designed for 12–48 V DC networks, this unit combines a robust manual reset with a tactile switch that audibly confirms each reset. The result is a compact device that feels solid in hand and ready for action when needed, whether you’re wiring a car, boat, RV, or off-grid solar system.

Crafted with a thermoplastic UL 94V-0 housing, the unit resists harsh conditions and seal-compatible environments. An IP67 waterproof rating means dependable performance even when exposed to dust, water spray, or marine humidity. This protection helps you maintain control over your electrical circuit in environments that demand reliability and durability.

Key performance details highlight the breaker’s versatility. Its interrupt capacity reaches up to 2,500 A at 14 VDC and 1,500 A at 48 VDC, providing a generous margin for auxiliary circuits. The operating temperature range from -32°C to 82°C enables use in extreme climates, from frigid winters to hot, sun-drenched days. The compact, lightweight design supports easy installation in tight compartments—an advantage for vehicles, boats, and compact solar installations alike.

Compliance and compatibility are notable strengths. The TTocas 150A breaker aligns with SAE J1625, SAE J1171, and UL1500 ignition-protected standards, ensuring it can be integrated into automotive, marine, and industrial systems with confidence. It is typically used in auxiliary and accessory circuits in trucks, buses, RVs, and marine applications, with additional utility in battery chargers and DC audio setups. This breadth of potential uses helps you plan future upgrades or multi-purpose configurations without swapping components.

In practice, this circuit breaker offers a balance of protection, ease of reset, and environmental resilience. While not a guaranteed performance claim, it is designed to help you manage current safely, protect wiring, and simplify maintenance across a range of vehicles and systems. If your setup involves 12–48 V DC power and exposure to demanding conditions, this TTocas unit may provide a practical, ready-to-install solution that fits in tighter spaces while delivering dependable protection.

What to consider when selecting a circuit breaker

• Voltage compatibility: 12–48 V DC for automotive and marine systems
• Current rating: 150 A with reasonable headroom for auxiliary circuits
• Protection rating: IP67 waterproof for challenging environments
• Durability: UL-rated thermoplastic housing and ignition-protected construction

• Ease of use: Manual reset with a responsive switch
• Physical footprint: Compact and lightweight for space-constrained installs
• Applications: Trucks, buses, RVs, boats, battery chargers, and DC audio systems