FD63B090L - 90Amp Circuit Breaker

FD63B090L - 90Amp Circuit Breaker

The Siemens FD63B090L is a 90 Amp, 3-pole molded case circuit breaker designed for FD-frame applications. This complete breaker assembly includes a thermal-magnetic trip unit along with line and load-side lugs, making it a direct solution for your compatible electrical distribution systems requiring a 600 VAC FD-frame breaker.

The FD63B090L is rated for 90 Amps at 600 VAC and provides an interrupting capacity of 22 kAIC at 600V and 35 kAIC at 480V. It supports larger conductor sizes, including 6 AWG to 350 kcmil copper and 4 AWG to 350 kcmil aluminum.

Key Features and Benefits

• Siemens FD-frame molded case circuit breaker
• Catalog Number: FD63B090L
• 90 Amp current rating
• Three-pole configuration
• Complete breaker assembly with lugs
• Thermal-magnetic trip unit
• Provides overload and short-circuit protection
• Rated for 600 VAC
• Interrupting ratings:
  • 22 kAIC at 600 VAC
  • 35 kAIC at 480 VAC
• Standard 40°C breaker rating
• Includes line and load side lugs
• Supports:
  • Copper conductors: 6 AWG to 350 kcmil
  • Aluminum conductors: 4 AWG to 350 kcmil
• Meets UL 489 and IEC 60947-2 standards
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FD63B090L
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: FD
  
• Amperage Rating: 90 Amps
  
• Number of 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
• Terminal Configuration: 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 10.031 lbs
  
• UPC: 783643005273
  

Material Compliance and Certifications

The Siemens FD63B090L is designed to meet UL 489 and IEC 60947-2 standards for molded case circuit breaker applications. Before installation, confirm that the breaker matches the equipment requirements, including frame type, number of poles, voltage rating, and interrupting capacity.

Where It Works Best

The Siemens FD63B090L is commonly used in commercial buildings, industrial facilities, and electrical distribution equipment using compatible FD-frame molded case circuit breakers. It is a good fit for applications requiring a 90 Amp, three-pole breaker with factory-installed lugs, thermal-magnetic protection, and FD-frame compatibility.