BJ2125 - 125 Amp Circuit Breaker

BJ2125 - 125 Amp Circuit Breaker

The Eaton BJ2125 is a 125-amp, 2-pole sub feed main circuit breaker designed for you to use in compatible Eaton loadcenters. Rated for 120/240VAC systems, it features a plug-on design, common-trip operation, and a 10 kAIC interrupting rating. The breaker accepts copper or aluminum conductors from #2 AWG to 300 kcmil and occupies two 1-inch pole spaces. You can use this in feeder circuits, subpanels, service upgrades, and load center replacements where a 125A sub feed main breaker is required. The BJ2125 is intended for installation in loadcenters rated 150 amps or greater.

Key Features and Benefits

• 125A Current Rating: 125A current rating
• Poles: 2-pole configuration
• Common-Trip Operation: Ensures both poles trip simultaneously for safety
• Plug-On Design: Enables easy installation in compatible loadcenters
• Voltage Rating: 120/240VAC rating
• Interrupting Capacity: 10 kAIC interrupting capacity
• Conductor Compatibility: Accepts copper or aluminum conductors, wire range from #2 AWG to 300 kcmil
• Application: Designed for use as a sub feed main breaker
• Compact Design: Occupies two 1-inch pole spaces

Technical Specifications

• Manufacturer: Eaton
• Catalog Number: BJ2125
• Product Type: Sub Feed Main Circuit Breaker
• Series: BJ
• Frame Type: BJ
• Amperage Rating: 125A
• Voltage Rating: 120/240VAC
• Number of Poles: 2
• Trip Type: Common Trip
• Mounting Method: Plug-On
• Connection Type: Plug-On
• Interrupt Rating: 10 kAIC
• Wire Size Range: #2 AWG to 300 kcmil Copper/Aluminum
• Minimum Compatible Loadcenter Rating: 150A
• Product Dimensions: Length: 6.5 in., Width: 3.5 in., Height: 2.5 in.
• Weight: 1.8 lb.

Material Compliance and Certifications

• UL Listed: UL 489 Listed
• Federal Standards: Federal Specifications Classification W-C375 Compliant

Where It Works Best

• The Eaton BJ2125 is used in residential and light commercial electrical systems, including subpanels, feeder circuits, service upgrades, and loadcenter replacements. It is suitable for any application requiring a 125A, 2-pole plug-on sub feed main breaker.