Eaton FAZ-C63/1-SP 63A 277 V Circuit Breaker

Meet the Eaton FAZ-C63/1-SP 63A 277V circuit breaker — a purpose-built protection device engineered for commercial electrical systems that run on 277 volts. This single-pole (SP) breaker delivers dependable, localized protection for individual circuits, helping to prevent overloads from cascading through your panel and disrupting operations.

With a 63-amp current rating and a 277-volt rating, this unit is a versatile choice for lighting, control circuits, and other critical loads in office buildings, retail spaces, and light-industrial environments where 277V distribution is standard. Its robust design is built to respond quickly to faults, minimizing downtime and safeguarding wiring and equipment.

Part number FAZ-C63/1-SP identifies this exact unit for easy replacement and inventory management. Designed to fit Eaton panels and distribution boards that accept FAZ-series breakers, it simplifies upgrades, service, and preventive maintenance by ensuring a precise match with your existing setup.

Key specifications

• Current rating: 63 A
• Voltage rating: 277 V
• Configuration: Single-pole (SP)
• Part number: FAZ-C63/1-SP

What makes this breaker unique

The FAZ-C63/1-SP is purpose-built for 277V systems, aligning with common commercial infrastructure and reducing mismatch risks during installation. Its single-pole design targets individual circuits, enabling precise protection without unnecessary disruption to adjacent loads. Choosing this Eaton device means relying on a trusted, familiar form factor that technicians can stock and replace quickly, keeping maintenance tasks efficient and predictable.

Ideal use cases

• Protecting 277V lighting and control circuits in commercial spaces
• Upgrading or stocking spare breakers for Eaton-compatible panels and distribution boards
• Servicing facilities with frequent circuit protection replacements to minimize downtime
• Parts planning for building retrofit projects that shift to higher-voltage distribution

Practical tips for installation and use

• Ensure the panel accepts FAZ-series breakers before replacement or installation.
• Always shut off the main power and discharge any stored energy before handling the breaker.
• Keep a ready supply of FAZ-C63/1-SP units on hand for quick swap-outs during routine maintenance or fault events.
• Document the replacement part number in your maintenance logs to streamline future servicing and audits.