FXD63B125 - 125Amp Circuit Breaker

FXD63B125 - 125Amp Circuit Breaker

The Siemens FXD63B125 is a 125 Amp, 3-pole molded case circuit breaker from the SENTRON FD family with a thermal-magnetic trip unit. It is rated for 600VAC and carries interrupting ratings of 22kAIC at 600 volts and 35kAIC at 480 volts. In replacement work, those ratings deserve close attention. A breaker can have the right amp rating and still be the wrong match if the frame, voltage, trip characteristics, or interrupting capacity do not line up with your existing equipment.

Key Features and Benefits

• 125 Amp rating
• Three-pole configuration
• Siemens SENTRON FD frame
• Thermal-magnetic trip unit
• Non-interchangeable trip
• Standard 40°C calibration
• 600VAC maximum voltage rating
• No lugs installed
• Meets UL 489 and IEC 60947-2 requirements
• Built to last
• Suitable for form, fit, and functional replacement in compatible Siemens FD-frame equipment
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FXD63B125
  
• Product Type: Molded Case Circuit Breaker
  
• Product Family: FD6, 22KAIC, 600VAC
  
• Frame: FD
  
• Current Rating: 125A
  
• Number of Poles: 3
  
• Trip Unit: Thermal-Magnetic
  
• Trip Design: Non-Interchangeable
  
• Calibration: Standard 40°C
  
• Maximum Voltage: 600VAC
  
• Interrupting Rating:
  • 22kAIC at 600VAC
  • 35kAIC at 480VAC
• Lug Configuration: No lugs installed
  
• Dimensions (W × H × D): 4.5 in. × 9.5 in. × 4 in.
  
• Net Weight: 8.001 lb
  
• Standards:
  • UL 489
  • IEC 60947-2
• RoHS Compliance: Since 04/03/2009
  
• Country of Origin: Mexico
  
• UPC: 783643211247
  

Material Compliance and Certifications

The Siemens FXD63B125 meets UL 489 and IEC 60947-2 requirements. Siemens also lists RoHS substance-restriction compliance since April 3, 2009.

Installation should be completed by qualified electrical personnel in accordance with applicable codes and manufacturer instructions.

Where It Works Best

You’ll typically find the FXD63B125 in compatible switchboards, panelboards, feeder circuits, manufacturing facilities, warehouses, commercial buildings, and other industrial distribution equipment that uses Siemens FD-frame breakers. It is a practical match for maintenance and repair work where the existing system calls for a 125 Amp, 3-pole breaker with the same voltage, interrupting ratings, and trip configuration.