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

The Eaton FAZ-D5/3-NA is a purpose-built protection device for 277 V three-phase systems. With a 5 A current rating and 3 poles, this circuit breaker is engineered to guard your 277-volt, three-phase distribution points, keeping lighting, controls, and small equipment safely under control in commercial and light industrial environments. As part of Eaton’s FAZ family, it pairs with FAZ-compatible panels for a cohesive, reliable protection solution.

Key specifications

• Current rating: 5 A
• Poles: 3
• Voltage rating: 277 V
• Part Number: FAZ-D5/3-NA
• Series: FAZ family (Eaton)
• Application: three-phase circuits in 277 V distribution systems

Why this breaker stands out

• Direct compatibility with Eaton FAZ-equipped panels, ensuring consistent trip characteristics and straightforward replacement.
• Three-pole protection distributes safeguards evenly across all phases, helping prevent nuisance trips and unbalanced loads in 277 V circuits.
• Optimized for commercial lighting and small three-phase equipment where precise 5 A protection minimizes wiring stress while maintaining reliable operation.
• Built to integrate with the broader FAZ ecosystem, simplifying stocking, maintenance, and panel planning.

Ideal applications

Use the FAZ-D5/3-NA to protect 277 V three-phase lighting runs, control circuits, and compact three-phase equipment in offices, retail spaces, data centers, and other commercial facilities. It’s especially suitable when you need a matched, low-amperage protection point that fits cleanly within FAZ panels and existing electrical infrastructure.

Installation and compatibility

Verify that your panel accepts FAZ-series breakers and that 277 V three-phase wiring is correctly routed to this device. When replacing an existing breaker, ensure the circuit’s load aligns with the 5 A rating and follow all local electrical codes for wiring, clearance, and service entrance requirements. Use only in panels designed to accommodate FAZ components to maintain performance and safety standards.

Practical tips for best results

• Keep a spare FAZ-D5/3-NA on hand for quick panel maintenance and minimal downtime.
• Label the protected circuit clearly to reflect its three-phase, 277 V nature and 5 A rating.
• Pair with appropriate wiring gauges and protective devices in the surrounding distribution setup to preserve system integrity.