Hi-Amp C.B. III - Bussmann

The Bussmann Hi-Amp C.B. III (Model BPCB18550) is a professional-grade thermal circuit breaker engineered to provide robust overcurrent protection in demanding auxiliary and accessory circuits. Designed for rigorous automotive and industrial environments, this Type III manual reset breaker effectively safeguards critical electrical systems from overloads and short circuits, ensuring operational integrity and preventing costly damage in professional applications.

Key Features

• Type III Manual Reset with Push-to-Trip: Offers clear fault indication, allowing technicians to diagnose and resolve issues before power restoration. The integrated push-to-trip button also functions as a master disconnect for controlled circuit deactivation during maintenance.
• Sealed Waterproof Housing: Provides reliable protection against moisture, dust, and other contaminants, making it suitable for exposed installations in harsh elements encountered in heavy-duty vehicles and marine systems.
• Ignition Protected (SAE J1171 Compliant): Meets essential safety standards for gasoline-powered applications, crucial for marine systems and other hazardous environments where ignition sources must be controlled.
• Robust Terminal Connections: Equipped with 1/4-28 threaded studs and pre-installed SEMS nuts, ensuring secure and reliable electrical connections vital for professional installation and consistent performance.
• High Amperage and Interrupt Rating: This 50-amp model delivers substantial protection with a 3kA interrupt rating at 48V DC, effectively managing high fault currents in professional-grade electrical systems.

Applications

The Bussmann Hi-Amp C.B. III is ideal for safeguarding critical auxiliary and accessory circuits across various professional sectors. Common applications include:

• Heavy-Duty Vehicles: Essential for protecting electrical accessories and systems in commercial trucks, buses, RVs, and construction equipment.
• Marine Systems: Its sealed, ignition-protected design ensures reliable circuit protection on boats, yachts, and other watercraft.
• Battery Charger Systems: Effectively manages and protects multi-battery installations, particularly those utilizing battery isolators in fleet vehicles and industrial setups.
• DC Audio Systems: Provides crucial overcurrent protection for high-power DC audio systems found in professional vehicle conversions and custom installations.

Specifications

• Amperage: 50A
• Voltage Rating: Up to 48V DC
• Interrupt Rating: 3kA at 48V DC
• Reset Type: Manual
• Mounting: Flush
• Terminal Connection: 1/4-28 Threaded Stud
• Material: Thermoplastic