AMC HCB50S Surface Mount Circuit Breaker 50A

HCB50S – 50 A Surface-Mount Circuit Breaker

● Rating & Classification

• Current rating: 50 A DC, up to 48 Vdc operation
• Interrupt rating: ~3,000 A at 30 Vdc (HCB50S)

● Construction & Mounting

• Design: Surface-mount with screw mounting holes on faceplate; ideal for bulkhead or panel installation without rear access
• Material & Protection: UL 94 V‑0 thermoset plastic housing, IP67 rated for dust and water resistance

● Trip & Reset Functionality

• Includes a visible manual reset lever (red button) that trips under overload or can be manually switched off; resets by pushing the button back up
• Trip‑free design: Cannot be held “ON” when an overcurrent occurs, ensuring safety

● Environmental Specs

• Operating temperature: −32 °C to 82 °C
• Storage temperature: −34 °C up to 149 °C

● Standards & Compliance

• Meets SAE J1625 and SAE J1171 ignition-protection standards for automotive and marine use

● Electrical Connections

• Dual ¼″ stud terminals for line and load connections; ring terminals included or required depending on supplier

Summary Table

💡 Typical Applications

• Main protection on boats or marine setups (e.g. house battery feeds, windlasses, stereo amps)
• Automotive or RV DC systems requiring reliable, waterproof circuit protection
• RV systems, trucks, buses or industrial equipment operating up to 48 V DC

Additional information