3VA5217-6EC31-0AA0 - HFAS 175 Amp Circuit Breaker

3VA5217-6EC31-0AA0 - HFAS 175 Amp Circuit Breaker

The Siemens 3VA5217-6EC31-0AA0 is the kind of breaker you use when you just need it to do its job—no tweaking, no babysitting, no surprises. It’s a 175 amp, 3-pole breaker built on the 3VA5 frame, designed for standard line protection in commercial and industrial systems. You’ve got a thermal magnetic trip unit, so it handles overloads and short circuits the way most electricians expect—nothing complicated, nothing hidden. The settings are fixed. Overload protection is locked at 175A, and the instantaneous trip hits at 10x that. That’s it. No adjustment dials to mess with, which honestly is a plus in a lot of installs. With a 35kA rating at 480V, it’s built to handle real fault conditions—not just light-duty panels. And the size is manageable, so you’re not fighting for space when you drop it into an existing setup.

Key Features and Benefits

• 175A rating: good fit for mid-range commercial and industrial loads
• 3-pole breaker: for full three-phase protection
• Thermal magnetic trip: simple, proven, widely used
• 35kA @ 480V interrupting rating: for higher fault capacity systems
• Fixed trip settings: install it and move on
• H-interrupting class: for tougher applications
• Compact frame size: keeps panel layouts cleaner

Technical Specifications

• Manufacturer: Siemens
  
• Part Number: 3VA5217-6EC31-0AA0
  
• Series: 3VA52
  
• Poles: 3
  
• Amperage: 175A
  
• Interrupting Rating: 35kA @ 480V
  
• Frame Size: 250
  
• Trip Unit: Thermal Magnetic (TM230)
  
• Overload Protection (Ir): 175A (fixed)
  
• Short-Circuit Protection (Ii): 10 × In
  
• Dimensions:
  • Height: 9.65"
  • Width: 6.3"
  • Depth: 5.9"

Material Compliance and Certifications

• UL Listed
• Built to meet standard U.S. electrical code requirements
• Designed for use in commercial and industrial systems

Where It Works Best

• Commercial panels and tenant build-outs
• Industrial equipment protection
• Manufacturing environments
• Distribution panels with moderate to high fault current
• Retrofit jobs where you don’t want to overcomplicate things