Eaton FAZ-B4/2-NA 4A 2-Pole 277 V Circuit Breaker

The Eaton FAZ-B4/2-NA 4A 2-Pole 277 V Circuit Breaker is a compact, dual-pole overcurrent protection device designed for 277-volt branch circuits in commercial electrical systems. With a 4‑ampere rating and two poles, it quickly detects overloads on both hot legs and trips to safeguard equipment and wiring.

Key specifications

• Current rating: 4 A
• Poles: 2
• Voltage rating: 277 V
• Part number: FAZ-B4/2-NA

Why this Eaton breaker matters

Designed as part of Eaton’s FAZ family, this breaker delivers reliable protection for 277V distribution networks in busy commercial environments. The dual-pole design provides coordinated shutoff of both conductors, helping maintain system safety and preventing partial faults that can disrupt multi-wire branch circuits. Built for consistent performance, it supports dependable response when circuits exceed their rating, reducing the risk of damage to connected equipment.

Practical use cases

• Protect 277V lighting and small-power circuits in offices, retail spaces, schools, and other commercial facilities.
• Replace aging or faulty breakers in compatible panels to restore safe, code-compliant protection for 277V loads.
• Implement a compact, two-pole solution for new installations requiring reliable dual-leg protection on 277V circuits.

Installation and compatibility tips

Ensure the panel and circuit design are rated for 277V operation and compatible with two-pole breakers. Follow local electrical codes and use proper safety procedures during installation. The FAZ-B4/2-NA is a purpose-built component for Eaton-based systems, so verify fitment within the intended distribution panel and circuit plan.

Ready to safeguard your 277V circuits with precise, dependable protection? Add the Eaton FAZ-B4/2-NA 4A 2-Pole 277 V Circuit Breaker to your panel today.