3VA5335-6EC31-0AA0 - 350A Class HJAS 3-Pole Circuit Breaker

3VA5335-6EC31-0AA0 - 350A Class HJAS 3-Pole Circuit Breaker

When you're dealing with serious electrical loads, you need a breaker that just does its job—no surprises. The Siemens 3VA5335-6EC31-0AA0 is built for exactly that. It’s a 350 amp, 3-pole molded case circuit breaker designed to protect your system from overloads and short circuits without overcomplicating things. Part of Siemens’ 3VA5 line, this breaker is made for real-world applications where reliability matters more than anything else. It uses a thermal magnetic trip unit (TM230), which means it reacts the way you expect—steady protection for overloads and fast response when there’s a fault. With a 65kA interrupting rating at 480V AC, it’s ready to handle high fault conditions without hesitation. One thing to note: the overload protection is fixed at 350A, so what you see is what you get—no guesswork. The instantaneous trip is adjustable between 5–10x the rated current, giving you some flexibility to match your setup. It’s a solid choice whether you’re replacing an existing unit or building out a new panel.

Key Features and Benefits

• 350A current rating: 350A current rating for dependable power distribution
• 3-pole design: 3-pole design for full three-phase protection
• Interrupting capacity: 65kA interrupting capacity at 480V AC for high fault conditions
• Trip unit: Thermal magnetic trip unit (TM230) for straightforward, reliable protection
• Fixed overload protection: Fixed overload protection (Ir = 350A) — no need for calibration
• Adjustable instantaneous trip: Adjustable instantaneous trip (5–10x) to better match your system
• Compact frame: Compact 3VA5 frame helps save space in panels
• Application use: Built to handle demanding commercial and industrial use
  

Technical Specifications

• Part Number: 3VA5335-6EC31-0AA0
  
• Series: 3VA5
  
• Frame Size: 400A
  
• Amperage: 350A
  
• Poles: 3
  
• Voltage: Up to 480V AC
  
• Interrupting Rating: 65kA @ 480V AC
  
• Trip Unit: Thermal Magnetic (TM230)
  
• Overload Protection (Ir): 350A (fixed)
  
• Instantaneous Trip (Ii): 5–10x In (adjustable)
  
• Dimensions (H x W x D): 9.8" x 6.3" x 5.9"
  
• Lugs: Not included
  

Material Compliance and Certifications

• UL Listed: UL Listed for use in the U.S.
• Standards: Designed to meet UL 489 standards for circuit protection
• Interrupting class: High interrupting class (H) suitable for commercial and industrial systems
  

Where It Works Best

• You’ll typically see this breaker used in: Commercial electrical panels, Industrial equipment and machinery, Facility power distribution systems, Retrofit jobs where specs need to match closely, Projects where high interrupting capacity is required