JDB3125 - 125Amp Circuit Breaker

JDB3125 - 125Amp Circuit Breaker

A replacement breaker has several details that need to align, and the JDB3125 provides a specific checklist to check. This Eaton Series C molded-case circuit breaker is rated at 125 amps and has three poles, a J frame, JDB breaker type, and T186 trip type. The JDB3125 is built to last, while its clearly defined ratings and physical characteristics make it a practical form, fit, and functional replacement when your existing or legacy equipment specifically calls for this configuration.

Key Features and Benefits

• 125A, three-pole configuration: Gives you two of the first specifications to compare with the breaker being replaced.
• J frame: Helps narrow compatibility when working with existing Series C equipment.
• JDB breaker type: An important identifier when confirming the correct replacement.
• T186 trip type: Provides another specific reference point for matching the breaker to the existing assembly.
• Line and load terminals included: The JDB3125 comes with aluminum terminals on both sides.
• AC and DC ratings: 600 VAC and 250 VDC.
• UL Listed: The supplied manufacturer information confirms UL Listing for this catalog number.
  

Technical Specifications

• Catalog Number: JDB3125
  
• Manufacturer: Eaton
  
• Series: Series C
  
• Product Type: Molded case circuit breaker
  
• Circuit Breaker Type: JDB
  
• Frame: J
  
• Configuration: Complete breaker
  
• Amperage Rating: 125A
  
• Number of Poles: 3
  
• Voltage Rating: 600VAC, 250VDC
  
• Frequency Rating: 50/60 Hz
  
• Trip Type: T186
  
• Interrupt Rating at 240VAC: 65 kAIC
  
• Interrupt Rating at 480VAC: 35 kAIC
  
• Terminals: Line and load
  
• Terminal Material: Aluminum
  
• Product Width: 7 in.
  
• Product Height: 6.5 in.
  
• Product Length / Depth: 12 in.
  
• Product Weight: 1 lb
  
• UPC: 786679516249
  
• Certification: UL Listed
  

Material Compliance and Certifications

Manufacturer specifications identify the JDB3125 as UL Listed. No additional environmental or material-compliance certifications were provided in the supplied product information, so none are assumed here.

Where It Works Best

The JDB3125 is best considered for compatible existing and legacy electrical equipment that specifically requires a 125A, three-pole JDB breaker with a J frame and T186 trip type. The included aluminum line and load terminals are another detail to compare with the existing installation, rather than assuming compatibility based on amperage alone.