3VA5250-5ED31-0AA0 - MFAS 50 Amp Circuit Breaker

3VA5250-5ED31-0AA0 - MFAS 50 Amp Circuit Breaker

The Siemens 3VA5250-5ED31-0AA0 is one of those breakers you use when you just need something reliable and straightforward. It’s a 50 amp, 3-pole unit from the 3VA5 series, built for commercial and light industrial setups where you don’t want surprises. It comes with a thermal magnetic trip (TM210)—nothing fancy, just the kind of protection most systems are designed around. Overload is fixed at 50 amps, and the magnetic trip handles short circuits at 10x that rating. No tuning, no adjustments. It behaves the same way every time, which is exactly the point. The 35kA interrupting rating at 480V gives it enough capacity for systems with higher available fault current. That’s where this breaker makes sense—panels where a lower-rated unit wouldn’t cut it. Physically, it’s part of the 3VA52 frame, so it’s compact enough to fit into standard panel spaces without a fight.

Key Features and Benefits

• 50 amp breaker for three-phase systems
• 3-pole design for commercial/industrial use
• 35kA interrupting capacity at 480V
• Thermal magnetic trip unit (TM210)
• Fixed overload protection (no adjustments needed)
• Instantaneous trip at 10x rated current
• 3VA52 frame—solid size, easy fit

Technical Specifications

• Part Number: 3VA5250-5ED31-0AA0
  
• Poles: 3
  
• Amperage: 50A
  
• Interrupting Rating: 35kA @ 480V
  
• Frame Type: 3VA52
  
• Trip Unit: TM210 Thermal Magnetic
  
• Overload Protection: Fixed at 50A
  
• Instantaneous Trip: 10 × In
  
• Dimensions:
  • Height: 9.65" H
  • Width: 6.3" W
  • Depth: 5.9" D

Material Compliance and Certifications

• UL listed
• Meets standard U.S. electrical requirements
• Suitable for NEC-compliant installations

Where It Works Best

• Commercial panelboards
• Industrial equipment
• HVAC systems
• Motor protection circuits
• Direct replacement for 3VA52 frame breakers