Siemens 3VA5140-5ED21-0AA0 40A 2P 480V Circuit Breaker | AmpState

Meet the Siemens 3VA5140-5ED21-0AA0—a purpose-built circuit breaker designed to deliver dependable protection within panelboards, load centers, and electrical distribution setups. With a 40 A rating, two poles, and a 480 V operating capability, this unit is tailored for commercial and industrial environments where reliable safeguarding of circuits matters most. AmpState offers this exact part to support retrofit work and maintenance planning where keeping the original part number is crucial for fit and continuity.

Key specifications

• Manufacturer: Siemens
• Part Number: 3VA5140-5ED21-0AA0
• Product Type: Circuit Breaker
• Amperage: 40 A
• Poles: 2
• Voltage: 480V
• Availability: Available from AmpState

Why this model shines in retrofit and maintenance

When upgrading or maintaining existing electrical distributions, keeping the exact part number aids procurement, compatibility, and downtime avoidance. The 3VA5140-5ED21-0AA0 is specifically chosen for panelboards and load centers that rely on Siemens’ precision and consistency. Its 2-pole design protects two conductors in 480V circuits, making it a reliable choice for feeders, motor circuits, and branch circuits in commercial facilities.

Ideal use scenarios

• Retrofit projects where a precise Siemens part is required to match existing panel labeling and trip characteristics
• Maintenance planning with a ready-to-order, consistent part number to minimize procurement risk
• Protection of 480V distribution circuits in industrial or large commercial environments

How it compares for practical decisions

Compared to generic substitutes, this Siemens breaker is designed to align with Siemens panelboards and load centers, helping ensure seamless fit, coordinated protection schemes, and predictable replacement intervals. Its 40 A rating makes it suitable for moderately powered circuits while maintaining robust protection across distribution networks.

Pro tips for installation and care

• Verify the panel’s labeling to confirm 2-pole, 40 A, 480V compatibility before installation
• Keep a spare 3VA-series unit on hand to reduce downtime during planned maintenance or unexpected outages
• Coordinate replacements with the overall protection strategy for your Siemens-based electrical distribution system

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.