FD2125 - 125Amp Circuit Breaker

FD2125 - 125Amp Circuit Breaker

Finding the right replacement breaker often comes down to matching the original specifications—not guessing. If you've spent time working inside existing switchboards or panelboards, you know that details like frame size, trip unit, interrupting rating, and terminal configuration can make the difference between a straightforward installation and unnecessary delays. The Eaton FD2125 is a 125 Amp, 2-pole molded case circuit breaker from the Series C family, built on the F-frame platform for applications requiring the same form, fit, and function as the original device.

Key Features and Benefits

• Eaton Series C complete molded case circuit breaker
• 125 Amp continuous current rating
• Two-pole configuration
• F-frame construction
• T186 thermal magnetic trip unit for overload and short-circuit protection
• Rated for 600 VAC and 250 VDC applications
• 50/60 Hz frequency rating
• Line and load terminal configuration
• Built to last for demanding commercial and industrial electrical systems
  

Technical Specifications

• Manufacturer: Eaton
  
• Catalog Number: FD2125
  
• Product Type: Molded Case Circuit Breaker
  
• Series: Series C
  
• Circuit Breaker Type: FD
  
• Frame: F
  
• Frame Type: Complete Breaker
  
• Amperage Rating: 125 Amps
  
• Number of Poles: 2
  
• Trip Type: T186 Thermal Magnetic
  
• Voltage Rating: 600 VAC, 250 VDC
  
• Frequency Rating: 50/60 Hz
  
• Interrupting Rating:
  • 65 kAIC at 240 VAC
  • 35 kAIC at 480 VAC
• Terminals: Line and Load
  
• Dimensions:
  • Height: 6 in.
  • Width: 5.1 in.
  • Depth: 3.38 in.
• Weight: 3 lb
  

Material Compliance and Certifications

The Eaton FD2125 is UL Listed and manufactured to Eaton's published specifications for Series C molded case circuit breakers. Before replacing an existing breaker, verify the frame size, amperage, pole configuration, voltage rating, interrupting capacity, trip unit, and terminal arrangement to ensure compatibility with the equipment already in service.

Where It Works Best

The FD2125 is commonly used as a replacement circuit breaker in commercial, industrial, institutional, and municipal electrical distribution systems utilizing compatible Eaton Series C F-frame equipment. It is a practical choice for maintenance departments, electrical contractors, and facility managers performing routine preventive maintenance, restoring equipment after a breaker failure, or keeping properly matched spare breakers on hand for critical operations.