3VA5222-5EC31-0AA0 - MFAS 225 Amp Circuit Breaker

3VA5222-5EC31-0AA0 - MFAS 225 Amp Circuit Breaker

The Siemens 3VA5222-5EC31-0AA0 is one of those breakers you install and don’t have to think about again. It’s built for straightforward, reliable protection in 3-phase systems—nothing fancy, just solid performance where it counts. Rated at 225 amps with a 35kA interrupting capacity at 480V, it’s made to handle real-world electrical faults without hesitation. The thermal magnetic trip unit keeps things simple: overload protection is fixed at 225A, and short-circuit protection kicks in instantly at 10 times the rated current—no fine-tuning, no extra setup—just predictable operation. It’s also part of Siemens’ 3VA5 line, so you’re getting a design that’s widely used and trusted across commercial and industrial setups. And with its relatively compact size, it fits into panels, making installation a breeze.

Key Features and Benefits

• 225A rating for dependable load protection
• 3-pole configuration for three-phase systems
• 35kA @ 480V interrupting capacity
• Thermal magnetic trip unit—simple and proven
• Fixed trip settings mean fewer setup mistakes
• Fast response to short circuits (10x In)
• Compact design that works well in tight spaces

Technical Specifications

• Manufacturer: Siemens
  
• Part Number: 3VA5222-5EC31-0AA0
  
• Series: 3VA5 (Frame 250)
  
• Type: Thermal Magnetic (TM230)
  
• Poles: 3
  
• Amperage: 225A
  
• Interrupting Rating: 35kA @ 480V
  
• Voltage: Up to 480V
  
• Trip Settings:
  • Overload (Ir): 225A (fixed)
  • Instantaneous (Ii): 10 × In
• Dimensions:
  • Height: 9.65 in
  • Width: 6.3 in
  • Depth: 5.9 in

Material Compliance and Certifications

• This breaker is UL-listed and built to meet standard North American electrical requirements. It’s designed for consistent performance under load and during fault conditions—exactly what you want in protective equipment.

Where It Works Best

• Commercial electrical panels
• Industrial machinery and control systems
• OEM equipment builds
• Switchboards and distribution systems
• Replacement applications needing a 225A breaker