Eaton FAZ-D5/3 - 5 A, 480 V, 3-Pole Circuit Breaker | AmpState

The Eaton FAZ-D5/3 is a compact 3-pole molded case circuit breaker rated at 5 A and 480 V, designed to safeguard branch circuits in panelboards and load centers. Built for dependable overcurrent and short-circuit protection, this 3-phase breaker delivers precise, repeatable trip performance in commercial, residential, and light industrial environments.

What makes the FAZ-D5/3 stand out

• Space-efficient molded case design: minimizes panel footprint and simplifies wiring in tight electrical enclosures.
• Thermal-magnetic trip unit: combines a thermal overload element with a magnetic short-circuit trip for fast, repeatable protection across a wide temperature range.
• OEM panelboard compatibility: engineered to drop into matching Eaton loadcenters and panelboards for a seamless retrofit or new install.
• Three-pole 480 V operation: suited for balanced or delta/wye 3-phase circuits and critical equipment in higher-voltage systems.
• Applications across sectors: ideal for residential, commercial, and light industrial applications where dependable protection is essential.

Key specifications at a glance

• Manufacturer: Eaton
• Part number: FAZ-D5/3
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 5 A
• Voltage rating: 480 V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Ideal use scenarios

Use this 3-pole 480 V breaker to safeguard small-capacity, three-phase feeders in commercial spaces such as lighting panels, HVAC control gear, and small motors. It’s well-suited for installations where space is tight but reliable protection is non-negotiable. In new builds, pair the FAZ-D5/3 with Eaton OEM loadcenters for a cohesive, optimized electrical distribution system. For upgrades, it provides a straightforward swap-in replacement that preserves panel layout and wiring routes.

Why the thermal-magnetic design matters

The built-in thermal element responds to gradual overloads, while the magnetic core reacts to high-current faults in milliseconds. The result is fewer nuisance trips, predictable response, and safer operation for equipment like pumps, air handlers, and servo-driven loads that tolerate brief overloads but demand instant protection against faults.

Compatibility and safety considerations

Ensure you select the FAZ-D5/3 as a direct match to Eaton's load centers or OEM panels that list FAZ-series compatibility. Verify your system is a 3-phase, 480 V distribution and that the panel’s bus structure and mounting provisions align with a three-pole molded case breaker. Follow local electrical codes during installation and maintenance. If replacing an older FAZ model, confirm identical trip characteristics to maintain consistent protection curves for your circuits.

Maintenance and longevity

With proper care, the FAZ-D5/3 delivers reliable protection for years. After any trips, inspect the panel interior for signs of wear or moisture, keep connections clean and tight, and replace damaged accessories per Eaton guidelines. The compact form factor helps reduce thermal buildup in crowded panels, contributing to stable, long-lasting performance.

For engineers seeking a dependable, space-conscious 3-pole protection device for 480 V distribution, the Eaton FAZ-D5/3 offers precise, durable performance. It’s a trusted solution from AmpState that delivers clear, efficient protection for critical power delivery needs.