Siemens 3VA5445-5EC31-0AA0 Circuit Breaker, 450A, 3-Pole, 480V

The Siemens 3VA5445-5EC31-0AA0 Circuit Breaker is built for demanding industrial environments where reliable three‑phase protection matters. With a 450 A rating and a 3‑pole configuration at 480 V, this device is designed to safeguard heavy electrical loads, minimize downtime, and simplify maintenance in service, repair, and replacement projects.

Why this Siemens circuit breaker stands out

• Exact part-number compatibility: Use the model 3VA5445-5EC31-0AA0 to confirm fit for your application. Compatibility checks by part number and intended use ensure you don’t overbuy or miss a critical specification.
• Three-pole protection for balanced, robust safety: Handles all three hot conductors in a 3‑phase system to deliver coordinated interruption and reduce fault propagation.
• High-current capability: 450 A capacity supports substantial loads and equipment with higher surge or startup current, helping to prevent nuisance trips.
• Optimized for 480 V distribution: Suited for standard industrial electrical networks, aligning with common feeders and equipment across factories and facilities.
• Durable, maintenance-friendly design: Engineered for frequent operation in industrial settings, with the reliability you expect from Siemens protection devices.

Practical use cases

• Emergency replacements in existing Siemens panels when your protection device reaches end of life or fails.
• Panel upgrades or retrofits that require a 3-pole, 450 A solution to safely distribute three-phase power.
• New installations in facilities that demand dependable Siemens protection to meet safety, compliance, and uptime goals.

Tips for verifying compatibility

• Always confirm fit by part number (3VA5445-5EC31-0AA0) and review your application requirements before purchase.
• If you’re unsure about compatibility with your current gear, reach out so we can help verify the match by part number and application context.

Specification snapshot

• Manufacturer: Siemens
• Part number: 3VA5445-5EC31-0AA0
• Product type: Circuit Breaker
• Amperage: 450 A
• Poles: 3
• Voltage: 480 V

Designed for professionals who demand precise compatibility and dependable protection, the Siemens 3VA5445-5EC31-0AA0 is an essential component for safeguarding industrial power distribution. Ready to verify compatibility and proceed with your project? Send a note and we’ll assist with part-number validation and next-step guidance.