FXD63B090L - 90Amp Circuit Breaker

FXD63B090L - 90Amp Circuit Breaker

The Siemens FXD63B090L is a 90 Amp, 3-pole molded case circuit breaker from the SENTRON FD family, featuring a fixed thermal-magnetic trip unit for dependable protection against both overloads and short circuits. Rated for systems up to 600VAC, it carries an interrupting capacity of 22kAIC at 600VAC and 35kAIC at 480VAC. Those numbers aren't just part of the specification sheet—they're critical when matching a replacement breaker to the available fault current in your existing electrical system.

Key Features and Benefits

• Siemens SENTRON FD molded case circuit breaker
• 90 Amp current rating for compatible feeder and branch circuit applications
• Three-pole configuration for three-phase electrical systems
• Fixed thermal-magnetic trip unit responds to both sustained overloads and short-circuit conditions
• Non-interchangeable trip design
• FD frame construction
• Standard 40°C calibration
• Rated for systems up to 600VAC
• Factory-installed TA1FD350A line and load lugs eliminate the need to add compatible lugs separately
• Accepts 6 AWG–350 kcmil copper or 4 AWG–350 kcmil aluminum conductors
• Manufactured to meet UL 489 and IEC 60947-2 requirements
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FXD63B090L
  
• Product Family: SENTRON FD
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: FD
  
• Current Rating: 90 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: Factory-installed line and load lugs (TA1FD350A)
  
• Wire Range:
  • Copper: 6 AWG–350 kcmil
  • Aluminum: 4 AWG–350 kcmil
• 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: 783643005792
  

Material Compliance and Certifications

The Siemens FXD63B090L is manufactured to meet UL 489 and IEC 60947-2 standards for molded case circuit breakers and complies with 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 Siemens FXD63B090L is commonly found in commercial buildings, industrial facilities, manufacturing plants, switchboards, panelboards, and feeder circuits that require a 90 Amp, 3-pole FD-frame thermal-magnetic circuit breaker.