Siemens 3VA5140-6EC31-0AA0 Circuit Breaker, 40A, 3-Pole, 600V

Equip your industrial electrical system with the dependable protection of the Siemens 3VA5140-6EC31-0AA0 circuit breaker. Designed for service, maintenance, and replacement projects, this 3-pole unit delivers solid, three‑phase protection in demanding environments, helping keep equipment safe and downtime to a minimum.

• Part number: 3VA5140-6EC31-0AA0
• Amperage: 40 A
• Poles: 3 (three‑phase protection)
• Voltage rating: 600 V
• Product type: Circuit breaker for industrial electrical service and maintenance applications
• Application focus: Ideal for service panels, distribution feeders, and replacement scenarios in industrial settings
• Compatibility note: Verify fit by part number and application requirements. Need help matching a part number or confirming compatibility? Message us and we'll help.

Why this Siemens breaker stands out

What makes this model unique is its precise three‑pole design paired with a robust 40 A rating, delivering reliable interruption and protection for three‑phase circuits. Built to integrate seamlessly with Siemens electrical systems, it helps ensure coordinated protection across panels, MCCs, and switchboards. The result is a safer, more predictable electrical distribution—minimizing nuisance trips and protecting motors, feeders, and downstream devices.

Ideal use cases

• New installations in manufacturing plants needing dependable three‑phase protection
• Maintenance and retrofit projects where an exact part number match is required
• Replacement of aging breakers in service panels and distribution boards
• Motor control centers and other industrial distribution applications requiring reliable 40 A, 600 V protection

Practical guidance for installation and beyond

Before purchasing, confirm that the 3VA5140-6EC31-0AA0 matches your panel’s trip curves and enclosure compatibility. This part is specified for industrial service environments where consistent performance and easy maintenance matter. Consider stocking a compatible spare to reduce downtime during scheduled maintenance or unexpected outages.

If you’re unsure whether this exact part fits your application, reach out with your system details. Our team can help verify compatibility based on the part number and your specific installation requirements. Message us and we’ll assist in confirming the fit and planning your replacement or upgrade with confidence.