3VA5211-7EF31-0AA0 - CFAS 110 Amp Circuit Breaker

3VA5211-7EF31-0AA0 - CFAS 110 Amp Circuit Breaker

If you’re responsible for keeping electrical systems running safely and without interruption, you already know—your circuit breaker isn’t the place to cut corners. The Siemens 3VA5211-7EF31-0AA0 is built for exactly that mindset. It’s a high-performance molded case circuit breaker designed to step in instantly when your system needs protection the most. With a 110 amp rating, 3-pole configuration, and an impressive 100kA interrupting capacity at 480V, this breaker is made to handle serious fault conditions without hesitation. Whether you're protecting critical equipment or managing a busy commercial panel, this unit gives you that “set it and trust it” confidence. What really makes this model stand out is its thermal magnetic trip unit (TM240). It reacts intelligently—handling overloads with precision while snapping into action during short circuits. No guesswork, no adjustments needed. It’s engineered to perform exactly as expected, every time.

Key Features and Benefits

• High Fault Protection (100kA @ 480V): Built to interrupt large fault currents before they cause costly damage
• 110 Amp Capacity: Ideal for mid-range commercial and industrial applications
• Thermal Magnetic Trip Unit (TM240): Dual protection—steady overload response plus fast short-circuit interruption
• Fixed, Reliable Settings: No field adjustments needed—overload protection set at 110A, instantaneous at 10x In
• 3-Pole Design: Perfect for three-phase systems and balanced power distribution
• Compact Frame (3VA5, Frame 250): Saves valuable panel space without sacrificing performance
• C-Interrupting Class (CFAS): Designed for consistent, dependable interruption in demanding environments

Technical Specifications

• Manufacturer: Siemens
  
• Part Number: 3VA5211-7EF31-0AA0
  
• Series: 3VA52 / 3VA5 Family
  
• Poles: 3
  
• Rated Current: 110 Amps
  
• Interrupting Rating: 100kA @ 480V
  
• Trip Unit: TM240 Thermal Magnetic
  
• Overload Protection (Ir): Fixed at 110A
  
• Instantaneous Trip (Ii): 10 × In
  
• Frame Size: 250
  
• Dimensions:
  • Height: 9.65 in
  • Width: 6.3 in
  • Depth: 5.9 in

Material Compliance and Certifications

• Industry Standards: This Siemens 3VA5 circuit breaker is UL listed, meeting strict safety and performance standards required for use in North American electrical systems. It’s manufactured using high-quality components and tested to ensure consistent operation under real-world conditions—something that matters when system protection is on the line.
• UL Standards: This Siemens 3VA5 circuit breaker is UL listed, meeting strict safety and performance standards required for use in North American electrical systems.
  

Where It Works Best

• The 3VA5211-7EF31-0AA0 fits right into environments where reliability isn’t optional. You’ll commonly see it used in commercial buildings, industrial facilities, OEM equipment, and distribution panels. It’s especially effective in: Motor control centers (MCCs) Panelboards and switchgear systems Machinery and equipment protection Facility power distribution upgrades If you need a breaker that quietly does its job—protecting your system without constant oversight—this one checks every box.