Eaton FAZ-D1.5/3-NA 1.5A 3-Pole 480 V Circuit Breaker Potential Transformer

Eaton FAZ-D1.5/3-NA is a purpose-built, three-pole circuit breaker designed for 3‑phase 480 V power distribution with an integrated potential transformer. Rated for 1.5 A, this device combines protective switching with direct sensing capabilities to streamline wiring and enhance metering, protection, and control in compact panels.

Key specifications at a glance

• Model: FAZ-D1.5/3-NA
• Current rating: 1.5 A
• Poles: 3
• Voltage rating: 480 V
• Function: Circuit breaker with built-in potential transformer for accurate sensing

What makes this unit unique

• Integrated potential transformer: Directly feeds measurement and relay circuits without separate transformers, reducing wiring complexity and panel space while improving sensing accuracy.
• Three-pole configuration: Optimized for balanced 3‑phase systems, ensuring coordinated protection across all phases in industrial or commercial installations.
• Specialized for low-current protection: The 1.5 A rating enables precise protection schemes for auxiliary feeds, metering circuits, or niche low-load applications within larger electrical systems.
• Compact Eaton build quality: Engineered to withstand demanding environments in control cabinets, distribution boards, and machine enclosures while maintaining reliable performance.

Ideal use cases

• 3‑phase distribution panels in manufacturing lines where space is at a premium and precise sensing is needed for protection relays or metering equipment.
• Control cabinets that require an integrated sensing solution to feed protection relays, power monitors, or energy meters.
• Metrology-focused installations where accurate voltage sensing is essential for monitoring, diagnostics, or energy management programs.
• Retrofits or new builds in facilities with 480 V three‑phase networks seeking streamlined wiring and compact footprints.

How it solves common problems

• Wiring simplification: By combining protection and sensing in a single unit, you cut down on separate transformer wiring and connection points, reducing installation time and potential fault points.
• Improved measurement accuracy: The built-in potential transformer delivers cleaner, more stable sensing signals to relays and meters, supporting reliable trip decisions and precise energy reporting.
• Space efficiency: The 3-pole, compact form factor helps you fit robust protection in tight control panels and slim electrical enclosures without sacrificing functionality.
• Consistent protection for low-current circuits: The 1.5 A rating enables dedicated protection schemes for auxiliary feeders or low-load circuits that still demand exact monitoring.

Practical setup tips

• Confirm system voltage and phasing match the 480 V rating, and verify correct line/load orientation to ensure proper protection operation.
• Pair with compatible protection relays or metering modules that accept the integrated sensing signal for accurate, real-time monitoring.
• Plan wire routing to leverage the integrated transformer, minimizing cross-talk and ensuring clean, separate paths for power and sensing conductors.
• Document the exact part number (FAZ-D1.5/3-NA) in your asset registry for easy maintenance, replacement, and compatibility checks in the Eaton FAZ family ecosystem.

Designed for engineers and technicians who demand precise protection, accurate sensing, and efficient installations in 3‑phase 480 V environments, the Eaton FAZ-D1.5/3-NA 1.5A 3‑Pole 480 V Circuit Breaker Potential Transformer delivers a thoughtful balance of protection, measurement, and practicality. It’s a targeted solution for specialized control panels and metering-focused applications where every connection counts and space is at a premium.