FXD63B090 - 90Amp Circuit Breaker

FXD63B090 - 90Amp Circuit Breaker

The Siemens FXD63B090 is a 90 Amp, 3-pole molded case circuit breaker from Siemens' SENTRON FD series. It uses a fixed thermal-magnetic trip unit and is rated for electrical systems up to 600VAC, with an interrupting capacity of 22kAIC at 600VAC and 35kAIC at 480VAC. Those ratings aren't just numbers on a label—they determine whether the breaker is appropriate for the available fault current in your system, making it important to match the replacement breaker to the original equipment.

Key Features and Benefits

• Siemens SENTRON FD molded case circuit breaker
• 90 Amp current rating
• Three-pole configuration
• Fixed thermal-magnetic trip unit for overload and short-circuit protection
• Non-interchangeable trip design
• FD frame construction
• Standard 40°C calibration
• Rated for systems up to 600VAC
• No lugs installed, allowing the appropriate lug kit to be selected separately
• Manufactured to meet UL 489 and IEC 60947-2 requirements
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FXD63B090
  
• 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: No lugs installed
  
• Dimensions (W × H × D): 4.5 in. × 9.5 in. × 4 in.
  
• Net Weight: 8.001 lbs.
  
• Standards:
  • UL 489
  • IEC 60947-2
• RoHS Compliance: Compliant since April 3, 2009
  
• Country of Origin: Mexico
  
• UPC: 783643211216

Material Compliance and Certifications

The Siemens FXD63B090 complies with UL 489 and IEC 60947-2 standards for molded case circuit breakers and meets RoHS substance restrictions, according to Siemens' published specifications.

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

Where It Works Best

The FXD63B090 is found in a wide range of commercial and industrial electrical systems, including switchboards, panelboards, feeder circuits, manufacturing facilities, office buildings, warehouses, and other power distribution equipment that requires a 90 Amp, 3-pole FD-frame circuit breaker. Because this breaker is supplied without lugs, it's also a practical option for applications where the lug configuration is specified separately.