Eaton FAZ-D5/3 5A 3-Pole 277 V Circuit Breaker

Meet the Eaton FAZ-D5/3 5A 3-Pole 277 V Circuit Breaker — a purpose-built protection device engineered for reliable, three-phase circuit safety in commercial environments. With a 5-amp rating, three poles, and a 277-volt operating ceiling, this breaker delivers precise overcurrent protection for low- to mid-current loads while ensuring a clean, simultaneous disconnect of all phases when faults occur.

Part of Eaton’s FAZ family, the FAZ-D5/3 is designed for seamless integration with FAZ-series panels and compatible enclosures. Its exact part number—FAZ-D5/3—helps you identify the right replacement or installation for three-phase circuits that rely on 277 V, delivering a dependable, standardized protection solution.

• Three-pole design interrupts all three phases at once for safer shutdown and improved code compliance on three-phase circuits.
• 277 V rating makes it well-suited for commercial lighting and distribution loads commonly found in offices, retail spaces, schools, and similar facilities.
• Compact form factor fits into crowded panels and simplifies labeling and maintenance in technical spaces.
• Exact replacement compatibility with Eaton FAZ panels ensures straightforward installation and reliable performance within existing electrical ecosystems.
• Reliable protection for sensitive loads designed to handle nominal currents up to 5 A, helping prevent nuisance trips while guarding wiring and equipment from overcurrent conditions.

Use cases and practical applications

• Protect small-control circuits, lighting controllers, and other 277 V loads within commercial spaces that operate on a three-phase system.
• Replace worn or obsolete breakers in FAZ-series panels, ensuring continuity and consistency across your electrical protection strategy.
• Implement in new installations where a dedicated 3-pole, 277 V protection device is required for safe, coordinated disconnection of all phases.

Installation and best practices

• Verify compatibility with your Eaton FAZ panel and ensure the enclosure labeling matches the FAZ-D5/3 part number.
• Install in accordance with applicable electrical codes and manufacturer guidelines; ensure all terminations are secure and conductors match the rated ampacity.
• Plan for coordinated protection with upstream devices and downstream loads to maintain reliable, predictable tripping behavior.