FD62B125 - 125Amp Circuit Breaker

FD62B125 - 125Amp Circuit Breaker

Finding the right breaker replacement starts with more than just the amp rating. A 125 amp breaker may look like the correct choice, but the voltage rating, pole count, trip type, interrupting capacity, and lug arrangement all need to match the equipment already in service.

The Siemens FD62B125 is a 125 Amp, two-pole molded case circuit breaker designed for your compatible FD-frame electrical distribution equipment. It features a thermal-magnetic trip unit that provides overload and short-circuit protection while following the requirements of the original system design. Rated for 600 VAC, this breaker provides a 22 kAIC interrupting rating at 600V and 35 kAIC at 480V.

Key Features and Benefits

• Siemens FD-frame molded case circuit breaker
• Catalog Number: FD62B125
• 125 Amp current rating
• Two-pole configuration
• Thermal-magnetic trip unit for overload and short-circuit protection
• Rated for 600 VAC
• Standard 40°C breaker rating
• Includes line and load side lugs
• Meets UL 489 and IEC 60947-2 standards
• Built to last in commercial and industrial environments
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FD62B125
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: FD
  
• Amperage Rating: 125 Amps
  
• Number of Poles: 2
  
• Trip Type: Thermal-Magnetic
  
• Voltage Rating: 600 VAC
  
• Interrupting Rating:
  • 22 kAIC at 600 VAC
  • 35 kAIC at 480 VAC
• Temperature Rating: 40°C
  
• 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 8.201 lbs
  
• UPC: 783643211353
  

Material Compliance and Certifications

The Siemens FD62B125 is designed to meet UL 489 and IEC 60947-2 standards for molded case circuit breakers. Before installation, confirm the breaker matches the equipment requirements, including frame type, voltage rating, pole count, interrupting capacity, trip characteristics, and lug configuration.

Where It Works Best

The FD62B125 is commonly used in commercial buildings, industrial facilities, manufacturing plants, and electrical distribution equipment requiring compatible FD-frame circuit protection.