FXD63B250 - 250Amp Circuit Breaker

FXD63B250 - 250Amp Circuit Breaker

The Siemens FXD63B250 is a 250 Amp, 3-pole molded case circuit breaker from the Sentron FD series, built for use in compatible Siemens low-voltage electrical distribution equipment. It uses a thermal magnetic trip unit with a fixed, non-interchangeable trip and is rated for systems up to 600VAC.

If you're replacing an existing FD-frame breaker, the FXD63B250 is designed to match the original installation without changing the electrical layout. This version is supplied without factory-installed lugs, making it suitable for applications where compatible field-installed terminals are required.

Key Features and Benefits

• 250 Amp continuous current rating
• Three-pole FD-frame molded case circuit breaker
• Thermal magnetic trip protects against overloads and short circuits
• Fixed, non-interchangeable trip unit
• Rated for applications up to 600VAC
• Interrupt rating of 22kAIC at 600VAC and 35kAIC at 480VAC
• Shipped without factory-installed lugs for applications requiring field-selected compatible terminals
• Standard 40°C ambient calibration
• Fits compatible Siemens FD-frame distribution equipment
• Well suited for maintenance replacement while preserving the original electrical configuration
• Built to last for demanding commercial and industrial electrical systems
  

Technical Specifications

• Catalog Number: FXD63B250
  
• Manufacturer Part Number (MFN): FXD63B250
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker
  
• Product Family: Sentron FD6
  
• Frame: FD
  
• Trip Unit: Thermal Magnetic
  
• Trip Type: Fixed, Non-Interchangeable
  
• Amperage: 250 Amps
  
• Voltage Rating: 600VAC
  
• Poles: 3
  
• Interrupt Rating: 22kAIC @ 600VAC; 35kAIC @ 480VAC
  
• Terminal Configuration: No Lugs Installed
  
• Ambient Temperature: Standard 40°C
  
• Dimensions (W × H × D): 4.5 × 9.5 × 4.0 in.
  
• Net Weight: 8.832 lb
  
• Country of Origin: Mexico
  
• UPC: 783643211292
  

Material Compliance and Certifications

The Siemens FXD63B250 complies with UL 489 and IEC 60947-2 standards for molded case circuit breakers. It also meets the applicable requirements of the RoHS Directive, with Siemens providing REACH Article 33 information in support of current environmental reporting requirements.

Installation should be performed by qualified electrical personnel in accordance with the National Electrical Code (NEC), local regulations, and the equipment manufacturer's instructions.

Where It Works Best

The FXD63B250 is commonly used in:

• Compatible Siemens Sentron FD-frame panelboards
• Switchboards and low-voltage distribution equipment
• Commercial office buildings
• Industrial manufacturing facilities
• Healthcare and educational facilities
• Three-phase feeder and branch circuit protection
• Scheduled maintenance and replacement projects
• Existing Siemens electrical systems where maintaining the original form, fit, and function is important