FD63B090 - 90Amp Circuit Breaker

FD63B090 - 90Amp Circuit Breaker

The Siemens FD63B090 is a 90 Amp, 3-pole molded case circuit breaker for FD-frame systems. It includes a thermal-magnetic trip unit and line- and load-side lugs, making it a complete breaker assembly for your compatible electrical distribution equipment.

Built to last, the Siemens FD63B090 is a practical option for maintenance and replacement work where the existing breaker frame, pole count, amp rating, and connection style need to match.

Key Features and Benefits

• Siemens FD-frame molded case circuit breaker
• Catalog Number: FD63B090
• 90 Amp rating
• Three-pole configuration
• Thermal-magnetic trip unit
• Overload and short-circuit protection
• 600 VAC voltage rating
• Interrupting ratings:
  • 22 kAIC at 600 VAC
  • 35 kAIC at 480 VAC
• Standard 40°C rating
• Line and load side lugs included
• Meets UL 489 and IEC 60947-2 standards
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FD63B090
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: FD
  
• Amperage Rating: 90 Amps
  
• Poles: 3
  
• Trip Type: Thermal-Magnetic
  
• Voltage Rating: 600 VAC
  
• Frequency Rating: 50/60 Hz
  
• Interrupting Capacity:
  • 22 kAIC at 600 VAC
  • 35 kAIC at 480 VAC
• Terminals: Line and Load Side Lugs
  
• Wire Range:
  • Copper: 6 AWG – 350 kcmil
  • Aluminum: 4 AWG – 350 kcmil
• Dimensions: 4.5 in. W × 9.5 in. H × 4 in. D
  
• Weight: Approximately 8.973 lbs
  
• UPC: 783643211438
  

Material Compliance and Certifications

The Siemens FD63B090 is designed to meet UL 489 and IEC 60947-2 standards for molded case circuit breaker applications. Before installation, confirm the breaker matches the equipment requirements, including the FD frame, number of poles, voltage rating, and interrupting capacity.

Where It Works Best

The Siemens FD63B090 is commonly used in commercial buildings, industrial facilities, and electrical distribution equipment using compatible FD-frame molded case circuit breakers.