FXD63B100 - 100Amp Circuit Breaker

FXD63B100 - 100Amp Circuit Breaker

The Siemens FXD63B100 is a 100 Amp, 3-pole molded case circuit breaker from the SENTRON FD family with a fixed thermal-magnetic trip unit. It's rated for electrical systems up to 600VAC and carries an interrupting capacity of 22kAIC at 600VAC and 35kAIC at 480VAC. When you're replacing an existing breaker, those numbers matter just as much as the amp rating. Matching the available fault current, frame size, trip type, and pole count helps ensure the replacement fits the application as intended.

Key Features and Benefits

• Siemens SENTRON FD molded case circuit breaker
• 100 Amp current rating
• Three-pole configuration for three-phase electrical systems
• Fixed thermal-magnetic trip unit combines overload and instantaneous short-circuit protection
• FD frame with a non-interchangeable trip design
• Standard 40°C calibration
• Rated for systems up to 600VAC
• No lugs installed, making it a practical choice where compatible lugs are already in service or a specific lug arrangement is required
• Manufactured to meet UL 489 and IEC 60947-2 requirements
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FXD63B100
  
• Product Family: SENTRON FD
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: FD
  
• Current Rating: 100 Amps
  
• 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: 8.997 lb.
  
• Standards:
  • UL 489
  • IEC 60947-2
• RoHS Compliance: Compliant since April 3, 2009
  
• Country of Origin: Mexico
  
• UPC: 783643211223
  
• Product Lifecycle: Active
  

Material Compliance and Certifications

The Siemens FXD63B100 complies with UL 489 and IEC 60947-2 standards for molded case circuit breakers and meets Siemens' published RoHS requirements.

Installation should be completed by qualified electrical personnel and follow applicable electrical codes, safety practices, and equipment requirements.

Where It Works Best

The FXD63B100 is commonly found in commercial buildings, industrial facilities, manufacturing plants, switchboards, panelboards, and feeder circuits that require a 100 Amp, 3-pole FD-frame circuit breaker. Since it is supplied without lugs installed, it's also a practical option for applications where compatible lugs are already in place or where the installation calls for a specific lug kit.