Eaton FAZ-B4/3-NA 4A 3-Pole 480 V Circuit Breaker

Meet the Eaton FAZ-B4/3-NA—the dependable 4 A, 3-pole circuit breaker designed for robust protection of 3-phase systems at 480 V. This North American variant is engineered to interrupt all three lines together, delivering coordinated protection that helps safeguard motors, drives, and other equipment from overloads and fault conditions.

Why this breaker stands out

• 3-pole design provides true three-phase protection by disconnecting all phases simultaneously, reducing arcing risk and ensuring safer shutdowns in fault conditions.
• 4 A current rating offers precise overload protection for smaller 3-phase loads while avoiding nuisance trips on steady-state operation.
• 480 V maximum voltage makes it suitable for common industrial and commercial three-phase distribution, helping you protect equipment across manufacturing floors, warehouses, and facilities.
• Compact, reliable FAZ family hardware—part of Eaton’s trusted FAZ lineup—designed to fit standard panels and facilitate straightforward replacement or upgrade in existing installations.
• North American variant ensures compatibility with local electrical practices, terminology, and panel configurations for streamlined procurement and installation.

Ideal use cases

Use the FAZ-B4/3-NA to protect small to medium 3-phase loads in environments like manufacturing lines, conveyors, pumps and fans, or control circuits in industrial settings. It’s especially valuable when you need coordinated shutdown across all three phases to prevent partial faults and equipment damage.

Installation and compatibility

Designed to integrate with Eaton panels and FAZ-series assemblies. When replacing an existing breaker or configuring a new panel, confirm the FAZ-B4/3-NA matches the panel’s frame size and mounting pattern and adhere to local electrical codes for wiring and torque specifications. For detailed wiring instructions and safety considerations, consult the official documentation from Eaton.

Specifications

• Part Number: FAZ-B4/3-NA
• Current rating: 4 A
• Poles: 3
• Voltage rating: 480 V

Equip your 3-phase system with a trusted protector. The Eaton FAZ-B4/3-NA delivers reliable, coordinated protection for 480 V installations, helping you minimize downtime and safeguard critical equipment.