Eaton FAZ-D1/1-NA-SP 1A 1-Pole 277 V Circuit Breaker

Meet the Eaton FAZ-D1/1-NA-SP 1A 1-Pole 277 V Circuit Breaker—a compact, reliable protective device crafted for single-circuit protection in commercial and light industrial electrical systems. With a precise 1-amp rating and a 277-volt capability, it’s designed to safeguard small loads and control circuits where clean, dependable performance matters.

Key specifications at a glance

• Current rating: 1 A
• Poles: 1
• Voltage rating: 277 V
• Part/Model: FAZ-D1/1-NA-SP
• Series family: FAZ (plug-in style protection for FAZ panel systems)

Designed for reliability in FAZ panel systems

This breaker is a direct-fit component for Eaton FAZ panel architectures, engineered to swap in quickly and restore service with minimal downtime. The 1-pole design protects a single live conductor and is well-suited for low-current loads common in lighting control, small equipment circuits, and auxiliary systems that rely on stable, uninterrupted protection at 277 V.

Ideal use scenarios

• 277 VAC lighting control circuits in commercial spaces (offices, retail, schools) where a modest, predictable protection level is required.
• Small control or signaling circuits within panelboards that demand precise current interruption at a single point of protection.
• Replacement parts for established FAZ installations where maintaining consistent performance and fit is critical.

Installation, safety, and best practices

• Verify compatibility with your FAZ panel system before replacement.
• Power down the main service and test the circuit before handling the breaker.
• Install firmly into the designated slot, ensuring proper seating and alignment with the panel’s bus bars.
• Follow all manufacturer installation instructions and your panel’s torque specifications to ensure reliable operation.

Why this Eaton breaker stands out

Choosing the FAZ-D1/1-NA-SP means selecting a purpose-built, exact-fit component from Eaton’s trusted FAZ family. The 1 A, 1-pole configuration is ideal for protecting small, sensitive loads without unnecessary interrupting of larger circuits, helping to prevent nuisance trips and extending the life of connected equipment. For facilities with FAZ panel systems, this breaker delivers consistent performance, straightforward replacement, and a dependable safeguard for critical 277 V circuits.