FD63B175L - 175Amp Circuit Breaker

FD63B175L - 175Amp Circuit Breaker

The Siemens FD63B175L is a 175 Amp, 3-pole molded case circuit breaker designed for FD-frame applications and supplied as a complete assembly with line and load side lugs. This breaker includes a thermal-magnetic trip unit to help protect your electrical circuits from overloads and short-circuit conditions while providing the FD-frame configuration needed for compatible equipment.

Rated for 600 VAC, the FD63B175L provides 22 kAIC at 600V and 35 kAIC at 480V interrupting capacity. It supports larger conductors, 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: FD63B175L
• 175 Amp current rating
• Three-pole configuration
• Complete breaker assembly with factory-installed lugs
• Thermal-magnetic trip unit
• Provides overload and short-circuit protection
• Rated for 600 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: FD63B175L
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: FD
  
• Amperage Rating: 175 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: 783643005327
  

Material Compliance and Certifications

The Siemens FD63B175L is part of the FD-frame molded case circuit breaker family and meets UL 489 and IEC 60947-2 standards. These certifications confirm the breaker has been evaluated for the construction and performance requirements associated with molded case circuit breakers.

Where It Works Best

The Siemens FD63B175L is commonly used in commercial buildings, industrial facilities, and electrical distribution equipment that uses compatible FD-frame molded case circuit breakers. It is a good fit for applications requiring a 175 Amp, three-pole breaker with thermal-magnetic protection, factory-installed lug connections, and higher interrupting capacity.