3VA5320-5EF31-0AA0 - 200A Class MJAS 3-Pole Circuit Breaker

3VA5320-5EF31-0AA0 - 200A Class MJAS 3-Pole Circuit Breaker

If you’re working with a three-phase system and need dependable protection, the Siemens 3VA5320-5EF31-0AA0 is a solid choice. This is a 200-amp, 3-pole thermal magnetic circuit breaker from the 3VA5 series, built to handle everyday demands in commercial and industrial setups without overcomplicating things. It does exactly what you expect it to do—protect your system from overloads and short circuits—while giving you some flexibility where it counts. The adjustable overload range (160A to 200A) lets you fine-tune it to your setup, and the instantaneous trip range helps with coordination so everything doesn’t shut down unnecessarily during a fault. With a 400A frame and a 35 kA interrupting rating at 480V AC, it’s designed to deal with serious fault conditions without hesitation. It’s also compact enough to fit into most panelboards or switchgear without becoming a headache during installation. One thing to note: lugs aren’t included, so you’ll want to plan for that depending on your setup.

Key Features and Benefits

• Thermal magnetic trip unit: for both overload and short-circuit protection
• 200 amp rating: for mid-range power distribution needs
• 3-pole design: for three-phase systems
• Adjustable overload setting: from 160A to 200A
• Instantaneous trip range: of 5–10x for better coordination
• 35 kA interrupting capacity: at 480V AC
• Compact design: that fits well in panelboards and switchgear
• Siemens 3VA5 platform: built as part of the series

Technical Specifications

• Part Number: 3VA5320-5EF31-0AA0
  
• Series: 3VA5
  
• Frame Size: 400A
  
• Amperage: 200A
  
• Poles: 3
  
• Trip Type: Thermal Magnetic (TM240, ATAM)
  
• Interrupting Rating: 35 kA @ 480V AC
  
• Overload Range (Ir): 160A – 200A
  
• Instantaneous Trip (Ii): 5–10x
  
• Dimensions:
  • 9.8" H × 6.3" W × 5.9" D
• Lugs: Not Included
  
• Interrupting Class: M (MJAS)
  

Material Compliance and Certifications

• UL Standards: This breaker is designed to meet UL standards for molded case circuit breakers, which means it’s built with safety and performance in mind for use in regulated electrical systems.

Where It Works Best

• You’ll typically see this breaker used in:
• Commercial buildings
• Industrial facilities
• Equipment protection and line protection
• Panelboards and switchgear
• HVAC systems and larger electrical loads