3VA5210-7EF31-0AA0 - CFAS 100 Amp Circuit Breaker

3VA5210-7EF31-0AA0 - CFAS 100 Amp Circuit Breaker

If you’re running a system where fault current is high, you don’t want to gamble on protection. The Siemens 3VA5210-7EF31-0AA0 is a 100 amp, 3-pole circuit breaker built for exactly that kind of environment—simple, dependable, and ready to do its job when it counts. This model is part of the Siemens 3VA5 series, using a thermal magnetic trip unit to handle both overloads and short circuits. It’s rated for 100kA at 480V, which puts it in the category of breakers used in serious commercial and industrial applications. When a fault hits, it reacts fast and helps limit damage to equipment and wiring. One thing contractors and engineers tend to like about this unit—it doesn’t overcomplicate things. The overload protection is fixed at 100A, and the instantaneous trip is set at 10 times the rated current. No fine-tuning, no guesswork. Install it, and it does what it’s supposed to do. It also fits neatly into panels thanks to the 3VA52 frame size, so you’re not fighting for space during installs or upgrades.

Key Features and Benefits

• 100 amp rating for reliable circuit protection
• 100kA interrupting capacity at 480V for high fault current systems
• Thermal magnetic trip unit (TM240) for fast, accurate response
• Fixed overload protection (Ir = 100A)—no adjustments needed
• Instantaneous trip at 10x In for quick fault clearing
• 3-pole configuration for three-phase power systems
• Compact 3VA52 frame helps maximize panel space
• Built for steady, long-term use in demanding conditions

Technical Specifications

• Part Number: 3VA5210-7EF31-0AA0
  
• Manufacturer: Siemens
  
• Series: 3VA5
  
• Frame Size: 250 Frame (3VA52)
  
• Poles: 3
  
• Amperage: 100A
  
• Interrupting Rating: 100kA @ 480V
  
• Trip Type: Thermal Magnetic (TM240, ATAM)
  
• Overload Protection (Ir): 100A (fixed)
  
• Short-Circuit Protection (Ii): 10 × In (fixed)
  
• Dimensions:
  • Height: 9.65 in
  • Width: 6.3 in
  • Depth: 5.9 in

Material Compliance and Certifications

• Meets UL requirements for low-voltage circuit protection
• Designed for use in systems requiring high interrupting capacity
• Manufactured to align with standard electrical safety expectations

Where It Works Best

• You’ll typically see this breaker used in places where failure isn’t an option: Commercial buildings and distribution panels Industrial equipment and manufacturing lines Control panels and motor protection setups Data centers and critical power systems Any application with high available fault current