3VA5290-6EC31-0AA0 - HFAS 90 Amp Circuit Breaker

3VA5290-6EC31-0AA0 - HFAS 90 Amp Circuit Breaker

The Siemens 3VA5290-6EC31-0AA0 is one of those breakers you spec when you just need it to work—no surprises, no babysitting. It’s a 90-amp, 3-pole unit from the 3VA5 line, built for standard commercial and industrial distribution where reliability matters more than bells and whistles. It uses a thermal magnetic trip unit, so it covers both sides of the problem. If the load creeps up over time, it’ll catch it if something goes wrong fast—like a short—it reacts immediately. That’s really what you want in most panel applications: simple, predictable protection. With a 35kA interrupting rating at 480V, it’s comfortable in higher fault environments without needing to step up to something oversized. And since the protection settings are fixed, you’re not dealing with adjustments in the field. Install it, wire it, and move on.

Key Features and Benefits

• 90 Amp Rating – A common size for a lot of distribution setups
• 3 Poles – Covers full three-phase protection
• Thermal Magnetic Trip – Handles both overloads and short circuits without complexity
• 35kA @ 480V – Solid interrupting capacity for demanding systems
• Fixed Trip Settings – No adjustments needed, which cuts down on install time
• 3VA5 Frame (250) – Compact enough for tighter panel spaces
• High Interrupting Class Design – Suitable for systems with higher available fault current

Technical Specifications

• Manufacturer: Siemens
  
• Part Number: 3VA5290-6EC31-0AA0
  
• Series: 3VA52
  
• Poles: 3
  
• Amperage: 90A
  
• Interrupting Rating: 35kA @ 480V
  
• Voltage: Up to 480V
  
• Trip Unit: Thermal Magnetic (TM230)
  
• Overload Protection (Ir): 90A (fixed)
  
• Short-Circuit Protection (Ii): 10x In (fixed)
  
• Frame Size: 250
  
• Dimensions:
  • Height: 9.65 in
  • Width: 6.3 in
  • Depth: 5.9 in

Material Compliance and Certifications

• This model meets UL requirements for molded case circuit breakers, so it’s suitable for use in standard U.S. electrical systems. It’s built with the kind of internal components you’d expect from Siemens—nothing flashy, just made to hold up over time.

Where It Works Best

• This breaker fits naturally in: Commercial panelboards Industrial equipment and control panels Manufacturing environments Facility upgrades or replacements Jobs where you don’t need adjustable settings