Eaton FAZ-B40-1N - 40 A, 480 V, 1-Pole Circuit Breaker | AmpState

Meet the Eaton FAZ-B40-1N, a compact 40A, 480V, 1-pole molded case circuit breaker designed for dependable branch circuit protection in panelboards and load centers. Built to withstand everyday switching while delivering reliable overcurrent and short-circuit protection, this unit helps keep commercial and light industrial electrical systems safe and stable.

• Space-efficient design: Compact molded-case construction that makes efficient use of panel space without compromising performance.
• Thermal-magnetic protection: A thermal-magnetic trip unit provides stable, repeatable protection against overloads and instantaneous short-circuit trips.
• OEM-compatible: Engineered to mate with matching Eaton OEM loadcenters and panelboards for seamless installation and dependable electrical characteristics.
• Versatile applications: Suitable for residential, commercial, and light industrial circuits, especially in 480V systems requiring reliable single-pole protection.
• Single-pole, 40A rating: Ideal for protecting a single hot leg in 480V distributions where compact, robust protection is needed.

Technical specifications

• Manufacturer: Eaton
• Part Number: FAZ-B40-1N
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40 A
• Voltage Rating: 480 V
• Number of Poles: 1
• Application: Branch circuit overcurrent and short-circuit protection

Who should consider the FAZ-B40-1N? electrical professionals upgrading or stocking panelboards and load centers that require reliable, compact protection for 480V single-pole circuits. It’s particularly well-suited for installations where space is at a premium, but dependable trip performance is non-negotiable. In practical terms, it reduces nuisance trips with its thermal-magnetic design, provides clear, predictable protection characteristics, and integrates smoothly into Eaton-based panel ecosystems.

Practical tips for use: verify compatibility with your panelboard’s frame and bus configuration, align the breaker orientation with your wiring plan to keep conductors organized, and pair it with a matched FAZ-series or OEM panelboard to ensure consistent protective coordination across the distribution system.