Siemens 3VA5225-1MU31-0AA0 250A 3P 480V Circuit Breaker | AmpState

The Siemens 3VA5225-1MU31-0AA0 is a high-capacity, 3-pole molded-case circuit breaker designed to safeguard large electrical distributions. With a 250 A rating at 480 V, this unit is built to protect panelboards, load centers, and other industrial power distributions where reliable fault protection and quick interruption are essential.

What sets this model apart:

• Direct part-number match simplifies procurement and minimizes compatibility risk for existing Siemens installations.
• Three-pole design ensures balanced protection across all phases in 3‑phase systems, reducing the chance of uneven fault conditions.
• Siemens reliability in demanding environments—paired with an efficient form factor that fits standard panel and bus-bar configurations for straightforward integration.
• Stock availability through AmpState—a convenient source for when you need a precise replacement part fast.
• Maintenance-friendly option ideal for panel builders and service teams who require a dependable, readily replaceable protective device.

Key specifications at a glance:

• Amperage: 250 A
• Poles: 3
• Voltage: 480 V
• Product Type: Molded Case Circuit Breaker (MCCB)
• Part Number: 3VA5225-1MU31-0AA0

Ideal use cases:

• Replacing worn or failed breakers in Siemens panelboards and load centers to maintain UL/CSA compliance and protective coordination.
• Stocking spare units for maintenance teams overseeing mid-to-large scale electrical distribution in commercial or industrial facilities.
• Incorporating into new panel-building projects where a precise, high-current protection device is required for 3‑phase, 480 V systems.

Practical tips for selecting and using this breaker:

• Verify that your installation uses compatible Siemens mounting and bus-bar arrangements to ensure a seamless fit.
• When in doubt about compatibility, AmpState can help confirm fit and provide exact part-number confirmation for your specific panel or distribution setup.
• Consider pairing this MCCB with corresponding Siemens protection devices to maintain a coherent protection strategy across your electrical distribution network.