Eaton BR390 - 90 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Eaton BR390 is a 90A, 240V, 3-pole plug-in molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its fast plug-in connection makes installation and replacements quick, reducing downtime and keeping critical electrical systems protected.

Why the BR390 stands out

• Rapid plug-in connection: streamlined installation and effortless replacements without the need for complex wiring rearrangements.
• Thermal-magnetic trip unit: combines time-delay overload protection with instantaneous short-circuit response for stable, repeatable protection performance.
• 3-pole design for 240V systems: ideal for three-phase panelboards and multi-wire circuits in commercial and light industrial environments.
• OEM-ready compatibility: engineered to fit matching Eaton OEM load centers and panelboards, ensuring proper fit, reliable trip characteristics, and consistent performance.
• Versatile application: suitable for residential, commercial, and light industrial applications that require solid protection at the branch circuit level.

Technical snapshot

• Manufacturer: Eaton
• Part number: BR390
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 90A
• Voltage rating: 240V
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical benefits

Ideal for building out or upgrading panelboards in homes, offices, small commercial spaces, and light industrial facilities. The BR390 protects feeders and branch circuits against overloads and short circuits, helping prevent equipment damage and downtime. Whether you’re replacing a failed breaker, expanding a panel, or wiring a new load center, this 3-pole unit ensures consistent protection across all three phases or legs of a 240V system.

What sets it apart from generic breakers

Beyond basic protection, the BR390 emphasizes installation efficiency and reliable, repeatable trip behavior. The plug-in design minimizes service time, while the thermal-magnetic trip ensures fast response to dangerous short circuits and controlled, predictable tripping during sustained overloads. When you need dependable protection that integrates seamlessly with Eaton panelboards and related gear, the BR390 delivers.

For workflows that demand durable, code-resilient protection with straightforward maintenance and fast service turns, choose the Eaton BR390 90A, 240V, 3-pole plug-in circuit breaker. It’s the right-size, reliable solution for steady electrical protection in modern panel systems.