FD63B070L - 70Amp Circuit Breaker

FD63B070L - 70Amp Circuit Breaker

The Siemens FD63B070L is a 70 Amp, 3-pole molded case circuit breaker built for your FD-frame applications. It includes line and load side lugs and uses a thermal-magnetic trip unit to provide protection during overload and short-circuit conditions.

This FD-frame breaker is rated for 600 VAC with an interrupting rating of 22 kAIC at 600V and 35 kAIC at 480V. It carries a standard 40°C rating and supports larger conductor sizes, including 6 AWG to 350 kcmil copper and 4 AWG to 350 kcmil aluminum.

Key Features and Benefits

• Siemens FD-frame molded case circuit breaker
• Catalog Number: FD63B070L
• 70 Amp rating
• Three-pole configuration
• Thermal-magnetic trip unit
• Provides overload and short-circuit protection
• Rated for 600 VAC
• Standard 40°C breaker rating
• Includes line and load side lugs
• Meets UL 489 and IEC 60947-2 standards
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: FD63B070L
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: FD
  
• Amperage Rating: 70 Amps
  
• Number of Poles: 3
  
• Trip Type: Thermal-Magnetic
  
• Voltage Rating: 600 VAC
  
• Frequency Rating: 50/60 Hz
  
• Interrupting Rating:
  • 22 kAIC at 600 VAC
  • 35 kAIC at 480 VAC
• Terminal Configuration: Line and Load Side Lugs
  
• Wire Range:
  • Copper: 6 AWG – 350 kcmil
  • Aluminum: 4 AWG – 350 kcmil
• Dimensions: 4.5 in. W × 9.5 in. H × 4 in. D
  
• Weight: Approximately 10.031 lbs
  
• UPC: 783643005259
  

Material Compliance and Certifications

The Siemens FD63B070L is designed to meet UL 489 and IEC 60947-2 standards for molded case circuit breaker applications. Before installation, confirm that the breaker matches the required frame type, pole count, voltage rating, and interrupting capacity for the equipment.

Where It Works Best

The Siemens FD63B070L is commonly used in commercial buildings, industrial facilities, and electrical distribution equipment that uses compatible FD-frame molded case circuit breakers. It is a good fit for systems requiring a three-pole, 70 Amp breaker with specific FD-frame ratings and lug configurations.