FD63T250 - 250Amp Trip Unit

FD63T250 - 250Amp Trip Unit

When your electrical system requires dependable protection at the 250 amp level, selecting a breaker that delivers the right combination of performance, flexibility, and compatibility is important. The FD63T250 Siemens circuit breaker is a 250 Amp, 3-pole molded case circuit breaker designed for commercial and industrial applications where reliable overcurrent protection is 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 while providing the trusted performance professionals expect from Siemens.

Key Features and Benefits

• 250 Amp, 3-pole Siemens SENTRON molded case circuit breaker
• HACR rated for approved heating, air conditioning, and refrigeration applications
• Designed for commercial and industrial electrical distribution systems
• Thermal magnetic trip technology provides overload and short-circuit protection
• Rated for 600 VAC electrical systems
• 22kAIC interrupting capacity at 600V
• 35kAIC interrupting capacity at 480V
• Includes line and load side lugs for easier installation
• Supports both copper and aluminum conductors
• 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: FD63T250
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Series: Siemens SENTRON FD Frame
  
• Frame Size: FD6
  
• Amperage Rating: 250 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 600 VAC
  
• Interrupting Capacity:
  • 22 kAIC at 600V
  • 35 kAIC at 480V
• Trip Unit: Thermal Magnetic
  
• Application Rating: HACR Rated
  
• 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: 1.204 lb
  
• UPC: 783643211995
  

Material Compliance and Certifications

The Siemens FD63T250 molded case circuit breaker is designed to meet recognized electrical safety and performance requirements, including UL 489 and IEC 60947-2 standards. These certifications help confirm that the breaker has been evaluated for applications requiring dependable overcurrent protection and safe electrical operation.

Where It Works Best

• Commercial electrical distribution systems
• Industrial facilities and manufacturing environments
• Three-phase 600V power applications
• HVAC and refrigeration equipment applications requiring HACR-rated protection
• Equipment feeder protection
• Electrical panels and distribution assemblies
• Siemens FD frame breaker replacement projects
• Applications requiring 250 amp circuit protection
• Systems using copper or aluminum conductors
• Electrical maintenance and upgrade projects