3VA5335-6EF31-0AA0 - 350A Class HJAS 3-Pole Circuit Breaker

3VA5335-6EF31-0AA0 - 350A Class HJAS 3-Pole Circuit Breaker

If you're running serious power through your system, you need a circuit breaker that won't hesitate when it matters most. The Siemens 3VA5335-6EF31-0AA0 is built for exactly that—delivering reliable, high-capacity protection for demanding commercial and industrial applications. This 350-amp, 3-pole breaker from the Siemens 3VA5 series is designed to keep your electrical system running smoothly while standing guard against overloads and short circuits. With its thermal magnetic trip unit, it reacts intelligently—handling everyday load variations while stepping in instantly when a fault occurs. What really makes this breaker stand out is its flexibility. With adjustable overload protection (280A–350A) and instantaneous trip settings (5–10x In), you're not stuck with a one-size-fits-all solution. You can dial it in to match your system's exact needs—reducing nuisance trips without compromising protection. And when things go wrong? Its 65 kA interrupting capacity at 480V AC means it's ready to safely stop high fault currents before they cause serious damage.

Key Features and Benefits

• 350 Amp Power Capacity: Handles demanding electrical loads with confidence
• 3-Pole Design: Ideal for three-phase systems in commercial and industrial setups
• Thermal Magnetic Protection: Smart response to both overloads and short circuits
• Adjustable Overload Range (280A–350A): Fine-tune performance to your application
• Instantaneous Trip Setting (5–10x In): Fast fault interruption when it counts
• 65 kA @ 480V AC Interrupting Rating: Strong protection in high-fault environments
• 400A Frame Size (3VA5 Series): Compact footprint with solid performance
• Engineered by Siemens: Known for consistency and long-term reliability

Technical Specifications

• Part Number: 3VA5335-6EF31-0AA0
• Series: Siemens 3VA5
• Amperage: 350A
• Poles: 3
• Frame Size: 400A
• Trip Unit: Thermal Magnetic (TM240, ATAM)
• Overload Protection (Ir): 280A – 350A
• Short-Circuit Protection (Ii): 5–10 × Rated Current
• Interrupting Capacity: 65 kA @ 480V AC
• Dimensions: 9.8” H × 6.3” W × 5.9” D
• Lugs: Not included

Material Compliance and Certifications

Industry Standards: This breaker is UL listed and built to meet strict North American electrical safety standards. That means you're not just getting performance—you're getting equipment designed to align with code requirements and deliver safe, dependable operation when installed correctly.

Where It Works Best

• The Siemens 3VA5335-6EF31-0AA0 fits right into environments where power demand is high and reliability is non-negotiable:
• Industrial facilities and manufacturing lines
• Commercial buildings and large-scale HVAC systems
• Power distribution panels and switchboards
• Data centers and critical infrastructure
• Motor protection and feeder circuits