3VA5340-6EC31-0AA0 - 40A Class HJAS 3-Pole Circuit Breaker

3VA5340-6EC31-0AA0 - 40A Class HJAS 3-Pole Circuit Breaker

The Siemens 3VA5340-6EC31-0AA0 is the kind of breaker you install and don’t have to think about again. It’s built for straightforward protection—no extra complexity, no unnecessary adjustments. This is a 40 amp, thermal-magnetic breaker with a fixed trip unit (TM210), so what you see is what you get. It reacts to overloads and short circuits exactly how it should, every time. That’s the appeal here—simple, predictable protection. It also brings a 65kA interrupting rating at 277V, which gives it the muscle to handle higher fault levels without hesitation. For many commercial and light industrial setups, that’s more than enough capacity to stay on the safe side. Physically, it’s compact and easy to work with. Even though it’s a 1-pole breaker, it’s housed in a 2-pole body, which can make panel layout a bit easier depending on your setup. Siemens includes load-side lugs, so you’re not hunting for extra parts during install. It’s not flashy—and that’s the point. It’s a solid, dependable breaker that does its job without creating new problems.

Key Features and Benefits

• 40A protection: 40A protection for everyday commercial and industrial use
• 65kAIC @ 277V: 65kAIC @ 277V for handling higher fault conditions
• Thermal-magnetic trip (TM210): Thermal-magnetic trip (TM210) with fixed settings—no tuning needed
• Flexible design: 1-pole design in a 2-pole body for added flexibility
• Pre-installed lugs: Load-side lugs already installed
• Build quality: Built to Siemens quality standards
• Certification: UL Listed
  

Technical Specifications

• Manufacturer: Siemens
  
• Series: 3VA
  
• Part Number: 3VA5340-6EC31-0AA0
  
• Type: Molded Case Circuit Breaker
  
• Poles: 1 (in 2-pole body)
  
• Amperage: 40A
  
• Voltage: 277 VAC
  
• Interrupting Rating: 65kAIC @ 277V
  
• Trip Unit: TM210 Thermal-Magnetic
  
• Trip Settings: Fixed Ir / Fixed Ii
  
• Frame: 3VA41
  
• Breaking Capacity: HEAB (Class H)
  
• Dimensions:
  • Height: 5.1"
  • Width: 2.0"
  • Depth: 3.6"
• Terminals: Load-side lugs installed
  

Material Compliance and Certifications

• UL Listed: UL Listed
• Standards: Manufactured to meet Siemens low-voltage standards
• Application Compliance: Suitable for use in compliant electrical distribution systems
  

Where It Works Best

• Commercial panels
• Light industrial equipment
• OEM builds
• Replacement for existing 3VA breakers
• Any setup needing 40A protection at 277V with high interrupting capacity