3VA5280-6EC31-0AA0 - HFAS 80 Amp Circuit Breaker

3VA5280-6EC31-0AA0 - HFAS 80 Amp Circuit Breaker

If you’re working with a 3-phase system and need a breaker that just does its job without fuss, the Siemens 3VA5280-6EC31-0AA0 is a solid pick. Rated at 80 amps with a 35kA interrupting capacity at 480V, it’s built for dependable line protection in commercial and light industrial setups. This unit uses a thermal magnetic trip (TM230), which means it reacts properly to both overloads and sudden faults—no guesswork, no complicated setup. What makes this one practical is its fixed settings. The overload protection is locked in at 80A, and the short-circuit trip kicks in at 10 times the rated current, so you’re getting consistent, predictable protection right out of the box. No adjustments needed. Just install it and move on. The 3VA52 frame (UL 250 frame size) keeps things compact enough to fit comfortably into most panel configurations, without sacrificing performance where it counts.

Key Features and Benefits

• 80 Amp rating suited for a wide range of commercial applications
• 35kA interrupting rating at 480V for handling higher fault levels
• Thermal magnetic trip unit (TM230) for both overload and short-circuit protection
• 3-pole design for three-phase systems
• Fixed trip settings—no tuning or calibration required
• H-interrupting class (HFAS) for added fault-clearing capability
• Straightforward installation with a familiar Siemens footprint

Technical Specifications

• Part Number: 3VA5280-6EC31-0AA0
  
• Series: 3VA52 (UL Frame 250)
  
• Poles: 3
  
• Amperage: 80A
  
• Interrupting Capacity: 35kA @ 480V
  
• Trip Unit: Thermal Magnetic (TM230)
  
• Overload Protection (Ir): 80A (fixed)
  
• Short-Circuit Protection (Ii): 10 × In
  
• Dimensions:
  • Height: 9.65 in
  • Width: 6.3 in
  • Depth: 5.9 in

Material Compliance and Certifications

• Meets UL standards for molded case circuit breakers
• Designed for use in systems aligned with U.S. electrical codes and safety requirements
• Suitable for installations requiring compliant, tested protection devices

Where It Works Best

• This breaker fits right into: Commercial distribution panels Industrial equipment and control panels HVAC systems and motor circuits Small to mid-sized manufacturing setups Any three-phase application where you want reliable protection without overcomplicating things