Eaton FAZ-K20/3N 20 Amp 480 Volt 3-Pole Molded Case Circuit Breaker

The Eaton FAZ-K20/3N is a 20A, 480V, 3-pole molded case circuit breaker designed to protect your branch circuits with reliability and precision. Built for use in panelboards and loadcenters from the same OEM family, this unit delivers proven protection for 3-phase systems in residential, commercial, and light industrial environments.

• Compact molded case design maximizes panel space and enables clean, high-density electrical distribution without compromising protection.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining a thermal element for overload tolerance with an instantaneous magnetic trip for short circuits, reducing nuisance trips while ensuring rapid fault interruption.
• OEM-compatible engineered to drop into matching Eaton loadcenters and panelboards for reliable fit, coordinated protection, and streamlined upgrades or renovations.
• Versatile 3-pole 480V protection ideal for 3-phase circuits in commercial and light industrial applications, as well as specialty residential setups requiring 480V distribution.

Technical snapshot

• Manufacturer: Eaton
• Part Number: FAZ-K20/3N
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 480V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Practical use cases

• In a 3-phase commercial service panel, the FAZ-K20/3N protects a 20A branch circuit feeding equipment like HVAC controls, lighting gear, or small motors on a 480V system.
• Retrofit projects in offices or retail spaces benefit from the compact form factor, allowing more efficient layout and easier serviceability inside existing panels.
• New installations where OEM compatibility ensures coordinated protection with existing Eaton panelboards and loadcenters, simplifying commissioning and future maintenance.

Why this model stands out

• Designed to integrate seamlessly with Eaton panel ecosystems, the FAZ-K20/3N offers superior trip coordination and a precise mechanical fit that minimizes installation surprises.
• 3-pole configuration provides balanced 3-phase protection for 480V circuits, helping protect motors and equipment from unbalanced faults and voltage spikes.
• Thermal-magnetic technology delivers predictable protection across temperature variations, reducing unwanted trips during normal operation and ensuring fast response when faults occur.

Tips for installation and maintenance

• Confirm the FAZ-K20/3N is the correct OEM-compatible model for your Eaton panelboard to ensure proper trip characteristics and a proper physical fit.
• After a fault condition, reset the breaker only once the circuit is verified clear and safe, and address the root cause to prevent repeat trips.
• Keep the panel area accessible and follow standard electrical safety procedures during replacement or inspection of the FAZ-K20/3N.