Siemens 3VA6340-6KQ31-0AA0 400A 3P 480V Circuit Breaker | AmpState

Powerful protection for demanding electrical systems, the Siemens 3VA6340-6KQ31-0AA0 is a 3-pole circuit breaker engineered to safeguard panelboards, load centers, and comprehensive electrical distribution networks. With a 400 A rating and 480 V operation, it delivers reliable, decisive interruption when faults occur, helping keep critical equipment running and personnel safe.

What makes this model stand out is its OEM-grade design and BOM-aligned part number, making it an ideal choice for replacement projects and stocking spares. By selecting the exact Siemens device that originally protected your system, you reduce downtime and ensure seamless compatibility with existing wiring, bus bars, and accessory kits.

Key benefits and practical advantages

• Exact fit for replacement and BOM integrity: Keeps your original configuration intact, simplifying inventory management and service planning.
• Robust 400 A, 3P, 480 V protection: Suited for high-demand feeders and big-load circuits in commercial and industrial environments.
• Versatile deployment: Ideal for panelboards, load centers, switchboards, and distributed electrical systems that require reliable fault interruption.
• Trusted Siemens reliability: Leverages Siemens engineering for predictable performance, long service life, and available support from AmpState.
• Ready for stocking: A practical spare for facilities with critical electrical infrastructure, reducing maintenance lead times.

Ideal use cases

• Large commercial buildings with centralized electrical distribution requiring dependable 400 A protection.
• Industrial facilities and manufacturing floors where uninterrupted power to feeders is essential.
• Data centers or server rooms where precise protection of high-amp circuits minimizes risk to critical systems.
• Replacement projects aiming to maintain BOM consistency and minimize configuration changes.

Compatibility, installation, and support

Designed to integrate into existing Siemens-based distribution networks, the 3VA6340-6KQ31-0AA0 is best paired with compatible panelboards and load centers that specify a 3-pole, 400 A, 480 V configuration. If you’re refreshing spares or aligning your BOM to the original part number, this device ensures a straightforward, drop-in upgrade that preserves electrical characteristics and wiring layouts. AmpState provides availability and assistance to confirm fit—just reach out if you need help verifying compatibility with your current panel schedule.

Specifications at a glance

• Manufacturer: Siemens
• Part Number: 3VA6340-6KQ31-0AA0
• Type: Circuit Breaker
• Amperage: 400 A
• Poles: 3
• Voltage: 480 V

When you choose the Siemens 3VA6340-6KQ31-0AA0 through AmpState, you’re not just buying a breaker—you’re securing a precise, OEM-grade solution that aligns with your original installation, supports efficient maintenance, and helps keep your electrical system running smoothly. If you need help confirming fit, our team is ready to assist and ensure a flawless match for your panel and BOM requirements.