FXD63B070L - 70Amp Circuit Breaker

FXD63B070L - 70Amp Circuit Breaker

The Siemens FXD63B070L is a 70 Amp, 3-pole molded case circuit breaker in the SENTRON FD family. It has a fixed thermal-magnetic trip unit, a 600VAC maximum voltage rating, and standard 40°C calibration. For anyone replacing your existing FD-frame breaker, those details are worth checking one by one. A breaker can look right and still be wrong for the application if the pole count, amperage, voltage, interrupting rating, or trip style does not match. This model is rated 22kAIC at 600VAC and 35kAIC at 480VAC, so it should be matched to equipment that calls for those exact ratings.

Key Features and Benefits

• 70 Amp, 3-pole Siemens SENTRON circuit breaker
• FD frame construction
• Fixed thermal-magnetic trip unit
• Non-interchangeable trip design
• Standard 40°C calibration
• Rated up to 600VAC
• 22kAIC interrupting rating at 600VAC
• 35kAIC interrupting rating at 480VAC
• TA1FD350A line and load lugs installed
• Accepts copper and aluminum conductors within the listed ranges
• Built to last in commercial and industrial electrical systems
• Useful for replacement work where the original specifications must be matched
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FXD63B070L
  
• Product Family: SENTRON FD6
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: FD
  
• Current Rating: 70 Amps
  
• Poles: 3
  
• Trip Unit: Thermal-Magnetic
  
• Trip Design: Non-Interchangeable
  
• Calibration: Standard 40°C
  
• Maximum Voltage: 600VAC
  
• Interrupting Rating:
  • 22kAIC at 600VAC
  • 35kAIC at 480VAC
• Breaking Capacity: Standard
  
• Lugs: TA1FD350A line and load lugs
  
• Copper Wire Range: 6 AWG–350 kcmil
  
• Aluminum Wire Range: 4 AWG–350 kcmil
  
• Dimensions: 4.5 in. W × 9.5 in. H × 4 in. D
  
• Net Weight: 8.929 lb
  
• Standards: UL 489, IEC 60947-2
  
• RoHS Compliance: Compliant since July 1, 2006
  
• Country of Origin: Mexico
  
• UPC: 783643005778
  

Material Compliance and Certifications

The Siemens FXD63B070L meets UL 489 and IEC 60947-2 requirements and complies with the manufacturer’s published RoHS restrictions.

Installation should be completed by qualified electrical personnel and follow applicable electrical codes, safety practices, and equipment requirements.

Where It Works Best

This breaker is used in compatible panelboards, switchboards, feeder circuits, commercial buildings, industrial facilities, and manufacturing plants that call for a 70 Amp, 3-pole FD-frame breaker.