HFXD63B125L - 125Amp Circuit Breaker

HFXD63B125L - 125Amp Circuit Breaker

When you’re matching a circuit breaker to an existing electrical system, the details matter. The HFXD63B125L is a 125-amp, 3-pole HFXD6 Sentron frame molded case circuit breaker with a non-interchangeable trip unit, designed for applications requiring its specific frame, electrical ratings, dimensions, and terminal configuration. For legacy electrical systems where maintaining the required breaker configuration is important, this model offers a practical replacement option when its specifications match the equipment and application.

Key Features and Benefits

• 125A, 3-Pole Configuration: Provides a specific 125-amp, three-pole configuration for electrical systems designed to use these ratings.
• Non-Interchangeable Trip Unit: Features a non-interchangeable trip unit as part of the specified breaker configuration.
• Line and Load-Side Terminals Included: Includes terminals on both the line and load sides, an important distinction when identifying the correct HFXD63B125L configuration.
• Suitable for Reverse Feed: Can be used in compatible reverse-fed applications when permitted by the equipment and installation requirements.
• HACR Rated: Carries an HACR rating for applications where this designation is required.
• 50/60Hz Operation: Suitable for compatible electrical systems operating at either 50Hz or 60Hz.
  

Technical Specifications

• Part Number: HFXD63B125L
  
• Type / Frame: HFXD6
  
• Breaker Type: Sentron Frame Molded Case Circuit Breaker
  
• Amperage: 125A
  
• Number of Poles: 3
  
• A.I.C. Rating at 600VAC: 25kA
  
• A.I.C. Rating at 480VAC: 65kA
  
• A.I.C. Rating at 240VAC: 100kA
  
• Frequency: 50/60Hz
  
• Temperature Rating: 40°C
  
• Trip Unit: Non-Interchangeable
  
• HACR Rated: Yes
  
• Reverse Feed: Suitable for Reverse-Fed Applications
  
• Terminals: Line and Load-Side Terminals Included
  
• Width: 4.50 in.
  
• Height: 9.50 in.
  
• Depth: 4.00 in.
  
• Overall Dimensions:
  • 4.50"W x 9.50"H x 4.00"D
• Approximate Shipping Weight: 14.00 lbs.
  

Material Compliance and Certifications

The HFXD63B125L molded case circuit breaker is HACR rated and specified for 50/60Hz operation with a 40°C rating.
No additional material-compliance declarations, agency listings, or certifications were included in the specifications provided for this exact part number.

Where It Works Best

The HFXD63B125L 125A 3-pole circuit breaker is best suited to compatible electrical distribution equipment and legacy systems designed around the HFXD6 frame and its specific electrical characteristics. It can be particularly useful in maintenance and replacement situations where preserving the existing breaker configuration is preferable to changing the surrounding electrical equipment.