Eaton FAZ-B12-3N 12A 480V 3-Pole Circuit Breaker

The Eaton FAZ-B12-3N is a compact, 3-pole molded-case circuit breaker built for dependable branch-circuit protection in panelboards and load centers. With a 12 A rating at up to 480 V, this unit provides precise, repeatable thermal-magnetic protection that helps prevent nuisance trips and minimizes downtime in critical electrical systems.

• Space‑efficient design — a compact molded-case breaker that maximizes panel space without sacrificing protection or performance.
• Thermal-magnetic trip unit — combines solid thermal protection with fast magnetic trips for immediate response to short circuits, delivering predictable protection across varying temperatures and loads.
• OEM compatibility — engineered to pair with matching Eaton OEM load centers and panelboards, ensuring proper fit, alignment, and trip characteristics.
• Versatile applications — ideal for residential, commercial, and light-industrial panels where reliable overcurrent and short-circuit protection is essential.
• Three‑pole protection — designed to guard balanced three-phase circuits, with a robust 12 A rating to protect wiring and connected equipment.

Why this matters — a thermal-magnetic molded-case breaker like the FAZ-B12-3N provides dependable, repeatable protection, reducing the risk of overheating and electrical faults in critical circuits. Its precise trip characteristics help you coordinate protection with downstream devices, improving overall electrical safety and system reliability.

Ideal use cases — install in panelboards or load centers for:

• Small-to-medium commercial lighting and receptacle circuits
• Light-industrial equipment protection in distribution panels
• New installations or replacements where a compact, reliable 3-pole breaker is required

Technical snapshot

• Manufacturer: Eaton
• Part Number: FAZ-B12-3N
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 12 A
• Voltage Rating: 480 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Installation and maintenance tips — ensure compatibility with the specific load center or panelboard, verify bus stabs alignment during mounting, and label circuits clearly for safe operation. Regularly inspect for signs of wear or overheating on the spline and terminals, and replace the unit if trip performance becomes uncertain or inconsistent.

Choose the Eaton FAZ-B12-3N for a reliable, space-conscious solution that delivers consistent protection for 480 V, 3‑pole circuits in a variety of commercial and industrial settings. Available through AmpState as a ready-to-ship, compatible part for your panelboard needs.