FD63B175 - 175Amp Circuit Breaker

FD63B175 - 175Amp Circuit Breaker

The Siemens FD63B175 is a 175 Amp, 3-pole molded case circuit breaker designed for FD-frame applications. This model includes a thermal-magnetic trip unit and line and load-side lugs, making it a complete breaker assembly for your compatible electrical distribution equipment.

With a 600 VAC rating, the FD63B175 provides 22 kAIC at 600V and 35 kAIC at 480V interrupting capacity. It accepts larger conductors, including 6 AWG to 350 kcmil copper and 4 AWG to 350 kcmil aluminum. The three-pole configuration makes it a common choice for three-phase electrical systems where the existing breaker specifications need to be matched.

Key Features and Benefits

• Siemens FD-frame molded case circuit breaker
• Catalog Number: FD63B175
• 175 Amp rating
• Three-pole configuration
• Thermal-magnetic trip unit
• Helps protect against overloads and short circuits
• Rated for 600 VAC
• Standard 40°C breaker rating
• Includes factory-installed line and load side lugs
• Meets UL 489 and IEC 60947-2 standards
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FD63B175
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: FD
  
• Amperage Rating: 175 Amps
  
• Poles: 3
  
• Trip Type: Thermal-Magnetic
  
• Voltage Rating: 600 VAC
  
• Frequency: 50/60 Hz
  
• Interrupting Capacity:
  • 22 kAIC at 600 VAC
  • 35 kAIC at 480 VAC
• Terminal Type: 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 8.444 lbs
  
• UPC: 783643211483
  

Material Compliance and Certifications

The Siemens FD63B175 is part of the FD-frame molded case circuit breaker family and meets UL 489 and IEC 60947-2 standards. Before installation, confirm the breaker matches the equipment requirements, including frame type, voltage rating, interrupting capacity, and conductor specifications.

Where It Works Best

The Siemens FD63B175 is commonly used in commercial buildings, industrial facilities, and electrical distribution systems that use compatible FD-frame circuit breakers. It is a good fit for applications requiring a 175 Amp, three-pole breaker with thermal-magnetic protection and factory-installed lug connections.