FD62T125 - 125Amp Trip Unit

FD62T125 - 125Amp Trip Unit

The Siemens FD62T125 is a 125 Amp thermal-magnetic trip unit for compatible FD-frame molded case circuit breakers. When you're servicing a breaker, the trip unit is one of the most important components to match correctly because it determines the breaker’s overload and short-circuit protection settings.

The FD62T125 is built for FD-frame applications and supports breaker setups using line- and load-side lug connections. It accommodates larger conductors, including 6 AWG to 350 kcmil copper wire and 4 AWG to 350 kcmil aluminum wire. Built to last, this Siemens trip unit is a practical choice for maintenance and repair applications where keeping the original breaker setup and ratings consistent is important.

Key Features and Benefits

• Siemens FD-frame thermal-magnetic trip unit
• Catalog Number: FD62T125
• 125 Amp rating
• Two-pole configuration
• Provides overload and short-circuit protection
• Rated for 600 VAC
• Designed for compatible FD-frame molded case circuit breakers
• Meets UL 489 and IEC 60947-2 standards
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FD62T125
  
• Product Type: Thermal-Magnetic Trip Unit
  
• Frame Compatibility: 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
• Terminal Configuration: Line and Load Side Lug Applications
  
• 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 1.151 lbs
  
• UPC: 783643211599
  

Material Compliance and Certifications

The Siemens FD62T125 is designed to meet UL 489 and IEC 60947-2 standards for molded case circuit breaker applications.

Where It Works Best

The Siemens FD62T125 is commonly used in commercial buildings, industrial facilities, and electrical distribution equipment that uses compatible FD-frame molded case circuit breakers.