Eaton FAZ-B4/3 4A 3-Pole 277 V Circuit Breaker

Meet the Eaton FAZ-B4/3 4A 3-Pole 277 V Circuit Breaker — a purpose-built protection device for commercial, three-phase electrical systems. With a 4-amp rating and three poles, this breaker is crafted to safeguard 277 V circuits, delivering dependable performance where precise protection matters most.

Key specifications

• Current rating: 4 A
• Poles: 3
• Voltage rating: 277 V
• Part number: FAZ-B4/3

Why this breaker stands out

• OEM compatibility within Eaton FAZ-series panels, making replacements straightforward and reliable
• Three-pole design protects all phases in 277 V systems, reducing the risk of partial faults affecting the whole circuit
• 4 A rating targets low to moderate load scenarios, providing precise protection for lighting, small motors, and related equipment in commercial environments
• Built for consistent performance in 3-phase distributions common to offices, retail spaces, and educational facilities

Ideal applications

• 277 V three-phase lighting and small equipment distributions in commercial buildings
• HVAC controls, fans, and modest 3-phase motor loads that require reliable overload protection
• Panel retrofit or expansion within Eaton FAZ-series installations to maintain uniform protection

Installation and compatibility notes

Designed for use in Eaton FAZ-series panels and other assemblies that support FAZ-B4/3 form factors. When installing, follow panel manufacturer guidelines and replace like-for-like amperage to preserve coordinated protection across the distribution system. Ensure the 277 V rating matches your system design, and verify that the three-pole configuration aligns with the three-phase circuitry in your enclosure.

With the FAZ-B4/3, you get a purpose-built, three-pole protection device from a trusted brand, engineered to keep your commercial 277 V circuits safe, reliable, and easy to service.