3VA5322-7EC31-0AA0 - 225A Class CJAS 3-Pole Circuit Breaker

3VA5322-7EC31-0AA0 - 225A Class CJAS 3-Pole Circuit Breaker

If you're dealing with critical power systems, you already know this: a circuit breaker isn't just another component—it's your first line of defense. The Siemens 3VA5322-7EC31-0AA0 is built for exactly that role, delivering dependable 225 amp protection in a compact, easy-to-integrate design. Part of Siemens' trusted 3VA5 series, this 3-pole thermal magnetic circuit breaker is designed to keep your systems running smoothly while protecting against overloads and short circuits. It uses a fixed thermal setting for steady, predictable overload protection, combined with an adjustable instantaneous trip range, so you can fine-tune performance for your specific application. That means fewer nuisance trips—and more control where it counts. And when fault conditions hit hard, this breaker is ready. With an interrupting rating of up to 100 kA at 480V AC, it's built to handle demanding electrical environments without hesitation. Whether you're upgrading a panel or maintaining existing infrastructure, this is the kind of component you install once and rely on.

Key Features and Benefits

• 225A Rated Protection – Ideal for commercial and industrial electrical systems requiring consistent performance
• Thermal Magnetic Trip Unit (TM230) – Combines reliable overload protection with fast short-circuit response.
• Adjustable Instantaneous Trip (5–10x) – Dial in protection levels to match your system requirements
• High Interrupting Capacity (100 kA @ 480V AC) – Handles severe fault conditions with confidence.
• 3-Pole Design – Built for three-phase power distribution applications
• Compact 400A Frame Size – Saves valuable panel space without sacrificing capability.
• Field-Proven Siemens Design – Known for long-term reliability in demanding environments

Technical Specifications

• Part Number: 3VA5322-7EC31-0AA0
  
• Series / Type: 3VA53
  
• Frame Size: 400A
  
• Amperage: 225A
  
• Poles: 3
  
• Trip Unit: Thermal Magnetic (TM230)
  
• Overload Protection (Ir): 225A (fixed)
  
• Short-Circuit Protection (II): Adjustable, 5–10x
  
• Interrupting Rating: 100 kA @ 480V AC
  
• Interrupting Class: C (CJAS)
  
• Dimensions:
  • 9.8" H x 6.3" W x 5.9" D
• Lugs: Not included
  

Material Compliance and Certifications

• UL Listed for safety and performance in North American applications
• Manufactured to meet strict electrical industry standards
• Designed for safe, code-compliant integration into power distribution systems

Where It Works Best

• The Siemens 3VA5322-7EC31-0AA0 is a solid choice for professionals who need dependable protection in: Commercial electrical panels Industrial facilities and manufacturing lines Motor control centers (MCCs) HVAC and mechanical systems High fault-current environments If your priority is keeping equipment protected and downtime to a minimum, this breaker gives you the control and confidence to do exactly that—without overcomplicating the job.