FXD63B250L - 250Amp Circuit Breaker

FXD63B250L - 250Amp Circuit Breaker

The Siemens FXD63B250L is a 250 Amp, 3-pole molded case circuit breaker from the Sentron FD family, intended for compatible Siemens low-voltage distribution equipment. It uses a fixed, non-interchangeable thermal magnetic trip and is rated for systems up to 600VAC. Interrupting capacity is 22kAIC at 600VAC and 35kAIC at 480VAC, which is the key information to match when you're replacing an existing FD-frame breaker in a feeder or branch-circuit application.

Key Features and Benefits

• 250 Amp rating for compatible three-phase applications
• Three-pole Siemens Sentron FD-frame construction
• Thermal magnetic protection for overload and short-circuit conditions
• Fixed, non-interchangeable trip unit
• Rated up to 600VAC
• Interrupting rating of 22kAIC at 600VAC
• Interrupting rating of 35kAIC at 480VAC
• TA1FD350A line and load lugs installed at the factory
• Accepts both copper and aluminum conductors within the listed ranges
• Practical for scheduled maintenance and direct replacement work
• Helps preserve the original electrical configuration
• Built to last when installed within its stated ratings
  

Technical Specifications

• Catalog Number: FXD63B250L
  
• MFN: FXD63B250L
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker
  
• Product Family: FD6
  
• Frame: FD
  
• Trip Unit: Thermal Magnetic
  
• Trip Type: Fixed, Non-Interchangeable
  
• Amperage: 250 Amps
  
• Voltage Rating: 600VAC
  
• Poles: 3
  
• Interrupting Rating: 22kAIC at 600VAC; 35kAIC at 480VAC
  
• Terminal Type: Line and Load Lugs
  
• Lug Model: TA1FD350A
  
• Copper Wire Range: 6 AWG–350 kcmil
  
• Aluminum Wire Range: 4 AWG–350 kcmil
  
• Ambient Calibration: Standard 40°C
  
• Dimensions: 4.5 in. W × 9.5 in. H × 4.0 in. D
  
• Net Weight: 9.248 lb
  
• Country of Origin: Mexico
  
• UPC: 783643006126
  

Material Compliance and Certifications

The Siemens FXD63B250L meets UL 489 and IEC 60947-2 requirements for molded case circuit breakers. Siemens also lists compliance with applicable RoHS substance restrictions and provides REACH Article 33 information for this product.

Installation should be completed by qualified electrical personnel in accordance with the National Electrical Code, local requirements, and the equipment manufacturer's instructions.

Where It Works Best

• Compatible Siemens Sentron FD-frame panelboards
• Switchboards and low-voltage distribution equipment
• Commercial building electrical systems
• Manufacturing plants and industrial facilities
• Schools, hospitals, and other institutional properties
• Three-phase feeder circuits
• Branch-circuit applications within the published ratings
• Planned maintenance and breaker replacement projects
• Existing installations where the wiring layout needs to remain unchanged