BR390 - 90 Amp Circuit Breaker

BR390 - 90 Amp Circuit Breaker

When reliable power protection matters, the Eaton BR390 circuit breaker delivers the performance needed to keep electrical systems operating safely and efficiently. Designed for use in Eaton Type BR loadcenters, this 90 Amp, 3-pole thermal magnetic circuit breaker helps protect circuits and connected equipment from overloads and short circuits before costly damage can occur. Whether you're upgrading an existing panel, replacing a breaker, or installing new electrical distribution equipment, the BR390 offers the trusted protection electricians and facility managers depend on every day.

With a plug-on mounting design, installation is straightforward in compatible Eaton BR loadcenters, making it an excellent choice for maintenance projects, system expansions, and equipment upgrades.

Rated at 90 amps and 240 volts with a 10 kAIC interrupting capacity, the BR390 is well suited for protecting larger electrical loads such as HVAC equipment, motors, pumps, compressors, distribution panels, and other critical power systems.

Key Features and Benefits

• 90 Amp current rating: For higher-capacity electrical applications.
• Three-pole configuration: Designed for three-phase power systems.
• Common-trip mechanism: Disconnects all poles simultaneously during fault conditions.
• Thermal magnetic protection: Guards against both overloads and short circuits.
• Compatible with Eaton Type BR loadcenters and panelboards.
• Convenient plug-on design: Simplifies installation and replacement.
• 10 kAIC interrupting rating: For dependable fault-current protection.
• Accepts #4-1/0 AWG copper or aluminum conductors.
• Ideal for protecting motors, HVAC equipment, pumps, compressors, and distribution systems.
• UL Listed: For safety and performance compliance.
  

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: BR390
  
• Product Series: Type BR
  
• Product Type: Thermal Magnetic Circuit Breaker
  
• Amperage Rating: 90 Amps
  
• Voltage Rating: 240 Volts
  
• Number of Poles: 3
  
• Trip Type: Common Trip
  
• Interrupt Rating: 10 kAIC
  
• Mounting Method: Plug-On
  
• Wire Size Compatibility: #4-1/0 AWG Copper/Aluminum
  
• Compatible Equipment: Eaton Type BR Loadcenters
  
• Dimensions:
  • 3" x 3" x 3"
• Weight: 0.99 lb
  

Material Compliance and Certifications

• UL 489 Listed
• Complies with Federal Specification Classification W-C375
• Manufactured to meet applicable industry safety and performance standards
• Designed for use in approved Eaton Type BR electrical distribution equipment
  

Where It Works Best

• The Eaton BR390 is an excellent choice for commercial buildings, industrial facilities, agricultural operations, workshops, and larger residential applications that utilize three-phase electrical systems.