3VA5210-7EC31-0AA0 - CFAS 100 Amp Circuit Breaker

3VA5210-7EC31-0AA0 - CFAS 100 Amp Circuit Breaker

The Siemens 3VA5210-7EC31-0AA0 is a straightforward, high-capacity breaker for jobs where lower-rated units just won’t cut it. If you’re working in a system with higher available fault current, this is the kind of breaker you spec so you don’t have to worry about it later. It’s rated at 100 amps with a 100 kA interrupting capacity at 480V, which puts it in the range for more demanding commercial and industrial applications. The thermal magnetic trip unit keeps things simple—overload protection is fixed at 100A, and short-circuit protection kicks in at 10 times that. No adjustments, no fine-tuning. Install it and move on. The 3VA52 frame is also a nice middle ground. It’s compact enough to work into tighter panel spaces but still built for heavier-duty applications. Whether you’re replacing a failed breaker or building out a new panel, it’s a solid, no-nonsense option.

Key Features and Benefits

• Handles high fault levels: with a 100kA @ 480V interrupting rating
• 100A capacity: for feeders and general equipment protection
• 3-pole design: for standard three-phase systems
• Thermal magnetic trip: simple, proven, and reliable
• Fixed settings: mean fewer mistakes during installation
• Compact frame: makes panel layout easier

Technical Specifications

• Manufacturer: Siemens
  
• Part Number: 3VA5210-7EC31-0AA0
  
• Series: 3VA5 (3VA52 frame)
  
• Poles: 3
  
• Amperage: 100A
  
• Interrupting Rating: 100kA @ 480V
  
• Trip Unit: TM230 (Thermal Magnetic)
  
• Overload Protection (Ir): 100A (fixed)
  
• Short-Circuit Protection (Ii): 10x In (fixed)
  
• Frame Size: 250
  
• Dimensions:
  • Height: 9.65"
  • Width: 6.3"
  • Depth: 5.9"

Material Compliance and Certifications

• UL listed: for use in U.S. electrical systems
• Meets standard industry requirements: for molded case circuit breakers
• Designed for consistent performance: under load
• C-Interrupting Class (CFAS) rated

Where It Works Best

• You’ll typically see this breaker used in: Commercial panels and distribution boards Industrial equipment and machinery circuits Facilities with higher available fault current Retrofit jobs where a higher A.I.C. rating is needed