FD63T070 - 70Amp Trip Unit

FD63T070 - 70Amp Trip Unit

Finding the right circuit breaker for an electrical system often comes down to matching the correct amperage, voltage rating, and protection features. The FD63T070 Siemens circuit breaker is a 70 Amp, 3-pole molded case circuit breaker designed for commercial and industrial applications that need reliable protection from electrical overloads and short circuits. Built as part of the Siemens SENTRON FD frame family, this breaker provides dependable performance for three-phase power systems where safety and system uptime are priorities.

Whether you are replacing an existing breaker, upgrading a distribution system, or installing new equipment, the Siemens FD63T070 70 amp circuit breaker provides a reliable solution for protecting electrical circuits.

Key Features and Benefits

• 70 Amp, 3-pole Siemens SENTRON molded case circuit breaker
• Provides reliable protection against overloads and short circuits
• Thermal magnetic trip technology for dependable circuit protection
• Rated for 600 VAC electrical systems
• 22kAIC at 600V and 35kAIC at 480V interrupting capacity
• 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
• Designed for Siemens FD frame applications
  

Technical Specifications

• Catalog Number: FD63T070
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker (MCCB)
  
• Series: SENTRON FD Frame
  
• Frame Size: FD6
  
• Amperage Rating: 70 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 600 VAC
  
• Interrupting Rating:
  • 22 kAIC at 600V
  • 35 kAIC at 480V
• Trip Unit: Thermal Magnetic
  
• 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: 1.219 lb
  
• UPC: 783643211896
  

Material Compliance and Certifications

The Siemens FD63T070 molded case circuit breaker is designed to meet established electrical safety and performance requirements, including UL 489 and IEC 60947-2 standards. These certifications help ensure the breaker is evaluated for use in applications requiring dependable overcurrent protection.

Where It Works Best

• Commercial buildings and electrical distribution systems
• Industrial facilities and manufacturing applications
• Three-phase 600V electrical systems
• Equipment feeder protection
• Electrical panels and distribution assemblies
• Siemens FD frame replacement projects
• Applications requiring 70 amp overcurrent protection
• Systems using copper or aluminum conductors
• Electrical maintenance and system upgrade projects