FXD63B070 - 70Amp Circuit Breaker

FXD63B070 - 70Amp Circuit Breaker

The Siemens FXD63B070 is a 70 Amp, 3-pole molded case circuit breaker from the SENTRON FD family, equipped with a non-interchangeable thermal-magnetic trip unit. Rated for 600VAC, this breaker offers an interrupting capacity of 22kAIC at 600VAC and 35kAIC at 480VAC, making it a dependable choice for protecting feeders, distribution equipment, and branch circuits in commercial and industrial electrical systems. If you're replacing an existing Siemens FD frame breaker, matching the original frame, amperage, interrupting rating, and trip characteristics is essential for maintaining proper system operation and compatibility.

Key Features and Benefits

• Siemens SENTRON FD molded case circuit breaker
• 70 Amp current rating
• Three-pole configuration
• Thermal-magnetic trip unit
• Non-interchangeable trip design
• FD frame construction
• Rated for systems up to 600VAC
• Standard 40°C calibration
• No factory-installed lugs
• Built to last for commercial and industrial electrical applications
• A direct form, fit, and functional replacement where an FD frame breaker with matching ratings is specified
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FXD63B070
  
• Product Family: SENTRON FD
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: FD
  
• Current Rating: 70 Amps
  
• Poles: 3
  
• Trip Unit: Thermal-Magnetic
  
• Trip Type: Non-Interchangeable
  
• Voltage Rating: 600VAC Maximum
  
• Interrupting Rating:
  • 22kAIC @ 600VAC
  • 35kAIC @ 480VAC
• Breaking Capacity: Standard
  
• Calibration: Standard 40°C
  
• Lugs: None installed
  
• Dimensions (W × H × D): 4.5 in. × 9.5 in. × 4 in.
  
• Net Weight: 8.4 lbs.
  
• Standards: UL 489, IEC 60947-2
  
• RoHS Compliance: Compliant since April 3, 2009
  
• Country of Origin: Mexico
  
• UPC: 783643211193
  

Material Compliance and Certifications

The Siemens FXD63B070 is manufactured to meet UL 489 and IEC 60947-2 standards for molded case circuit breakers and complies with Siemens' published RoHS requirements.

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

Where It Works Best

The Siemens FXD63B070 is commonly used in commercial buildings, industrial facilities, manufacturing plants, panelboards, switchboards, and power distribution equipment where a 70 Amp, 3-pole thermal-magnetic circuit breaker is specified.