FXD63B110L - 110Amp Circuit Breaker

FXD63B110L - 110Amp Circuit Breaker

The Siemens FXD63B110L is a 110 Amp, 3-pole molded case circuit breaker from the SENTRON FD family with a thermal-magnetic trip unit. Rated for 600VAC, it provides an interrupting capacity of 22kAIC at 600 volts and 35kAIC at 480 volts. Those ratings aren't just numbers on a specification sheet—they indicate the level of available fault current the breaker is tested to safely interrupt when installed within its published ratings.

If you're matching an existing installation, details like the frame size, trip characteristics, and lug configuration matter just as much as the amp rating.

Key Features and Benefits

• Siemens SENTRON FD molded case circuit breaker
• 110 Amp rating
• Three-pole configuration
• Thermal-magnetic trip unit
• Non-interchangeable trip design
• Standard 40°C calibration
• Rated for systems up to 600VAC
• Factory-installed line and load lugs (TA1FD350A)
• Accepts 6 AWG–350 kcmil copper or 4 AWG–350 kcmil aluminum conductors
• Meets UL 489 and IEC 60947-2 standards
• Built to last
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FXD63B110L
  
• Product Family: SENTRON FD
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: FD
  
• Current Rating: 110 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
• Line and Load Lugs: Factory-installed TA1FD350A
  
• Wire Range:
  • 6 AWG–350 kcmil Copper
  • 4 AWG–350 kcmil Aluminum
• Dimensions (W × H × D): 4.5 in. × 9.5 in. × 4 in.
  
• Net Weight: 10.031 lb.
  
• Standards:
  • UL 489
  • IEC 60947-2
• RoHS Compliance: Compliant since July 1, 2006
  
• Country of Origin: Mexico
  
• UPC: 783643005860
  

Material Compliance and Certifications

The Siemens FXD63B110L complies with UL 489 and IEC 60947-2 standards for molded case circuit breakers and meets Siemens' published RoHS substance restrictions.

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

Where It Works Best

The FXD63B110L is frequently found in switchboards, panelboards, feeder circuits, manufacturing facilities, warehouses, commercial buildings, and other industrial electrical distribution systems that use Siemens FD-frame circuit breakers. The factory-installed TA1FD350A line and load lugs make it a practical choice where the specified copper or aluminum conductor ranges are required without adding separate lug kits.