FD63T100 - 100Amp Trip Unit

FD63T100 - 100Amp Trip Unit

When your electrical system needs dependable protection, choosing the right circuit breaker can make all the difference. The FD63T100 Siemens circuit breaker is a 100 Amp, 3-pole molded case circuit breaker designed for commercial and industrial applications where reliable performance and consistent protection are essential. Built as part of the Siemens SENTRON FD frame family, this breaker helps protect electrical equipment, feeders, and distribution circuits from overloads and short-circuit conditions.

With a 22kAIC rating at 600V and 35kAIC at 480V, this Siemens 3-pole circuit breaker is built for applications where reliable fault interruption is required. Its compact molded case design makes it a practical solution for compatible Siemens electrical distribution equipment, whether you are replacing an existing breaker or installing a new system.

Key Features and Benefits

• 100 Amp, 3-pole Siemens SENTRON molded case circuit breaker
• Designed for commercial and industrial electrical distribution applications
• Thermal magnetic trip unit provides protection from overloads and short circuits
• Rated for 600 VAC systems
• 22kAIC interrupting capacity at 600V
• 35kAIC interrupting capacity at 480V
• Includes line and load side lugs for easier installation
• Supports copper and aluminum conductors for added flexibility
• Accepts 6 AWG–350 kcmil copper wire
• Accepts 4 AWG–350 kcmil aluminum wire
• Siemens FD frame design for compatible electrical equipment
  

Technical Specifications

• Catalog Number: FD63T100
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Series: Siemens SENTRON FD Frame
  
• Frame Size: FD6
  
• Amperage Rating: 100 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 600 VAC
  
• Interrupting Capacity:
  • 22 kAIC at 600V
  • 35 kAIC at 480V
• Trip Unit Type: Thermal Magnetic
  
• Temperature Rating: 40°C Standard
  
• Connection Type: Line and Load Side Lugs Included
  
• Lug Type: TA1FD350A
  
• Wire Range:
  • Copper: 6 AWG–350 kcmil
  • Aluminum: 4 AWG–350 kcmil
• Standards: UL 489 / IEC 60947-2
  
• Dimensions: 4.5 in W x 9.5 in H x 4 in D
  
• Weight: 1.208 lb
  
• UPC: 783643211926
  

Material Compliance and Certifications

The Siemens FD63T100 molded case circuit breaker is designed to meet recognized electrical safety and performance standards, including UL 489 and IEC 60947-2 requirements. These certifications help verify that the breaker has been evaluated for applications requiring reliable overcurrent protection.

Where It Works Best

• Commercial buildings and electrical distribution systems
• Industrial facilities and manufacturing plants
• Three-phase 600V power applications
• Equipment feeder protection
• Electrical panels and distribution assemblies
• Siemens FD frame replacement applications
• Applications requiring 100 amp circuit protection
• Systems using copper or aluminum conductors
• Electrical maintenance and upgrade projects
• New installations requiring a dependable molded case circuit breaker