3VA5290-7EF31-0AA0 - CFAS 90 Amp Circuit Breaker

3VA5290-7EF31-0AA0 - CFAS 90 Amp Circuit Breaker

The Siemens 3VA5290-7EF31-0AA0 is the kind of circuit breaker you install once and don’t have to think about again. It’s built for dependable protection in real-world conditions—whether that’s a busy commercial panel or a demanding industrial setup. This is a 90-amp, 3-pole breaker from Siemens’ 3VA5 series, designed to handle serious fault conditions with a 100kA interrupting rating at 480V. In practical terms, that means it’s ready to step in fast when something goes wrong, helping prevent damage to your equipment and keeping downtime to a minimum. It uses a thermal magnetic trip unit (TM240) with fixed settings. The overload protection is set at 90 amps, and the instantaneous trip kicks in at 10 times that. No adjustments, no fine-tuning—just consistent protection that works the way it should right out of the box. If you prefer equipment that’s straightforward, reliable, and backed by a well-known name, this breaker fits the bill.

Key Features and Benefits

• 100kA interrupting capacity at 480V for high fault protection
• Thermal magnetic trip unit for reliable, proven performance
• Fixed settings mean no setup or calibration required.
• Instantaneous trip at 10x rated current for fast response
• Compact size makes it easier to work in tight panels.
• Built for long-term use in commercial and industrial systems

Technical Specifications

• Part Number: 3VA5290-7EF31-0AA0
  
• Series: Siemens 3VA52
  
• Poles: 3
  
• Amperage: 90A
  
• Interrupting Rating: 100kA @ 480V
  
• Trip Unit: Thermal Magnetic (TM240, ATAM)
  
• Overload Protection (Ir): 90A (fixed)
  
• Short-Circuit Protection (Ii): 10 × In
  
• Frame Size: 250
  
• Dimensions:
  • Height: 9.65 in
  • Width: 6.3 in
  • Depth: 5.9 in

Material Compliance and Certifications

• UL Listed for use in the United States
• Meets standard industry safety and performance requirements
• Manufactured to Siemens quality standards

Where It Works Best

• This breaker is a solid choice for panelboards, switchgear, and distribution systems in commercial buildings or industrial environments. It’s especially useful where higher fault current is a concern, and you need something dependable without extra complexity.