Siemens 3VA5140-4ED21-0AA0 Circuit Breaker, 40A, 2-Pole, 480V

Siemens 3VA5140-4ED21-0AA0 is a high-reliability circuit breaker designed for demanding industrial electrical service, routine maintenance, and replacement projects. With a 40 A rating and two poles, this unit provides robust overcurrent protection for 480 V systems, helping safeguard equipment and maintain operational uptime in busy facilities. Use the exact part number to confirm compatibility with your Siemens panels and installation requirements.

Key specifications

• Manufacturer: Siemens
• Part number: 3VA5140-4ED21-0AA0
• Product type: Circuit Breaker
• Amperage: 40 A
• Poles: 2
• Voltage: 480 V

Why this model stands out

Designed for reliability in industrial environments, this 3VA-series style breaker delivers accurate protection for distribution circuits operating at 480 V. Its 2-pole configuration ensures simultaneous interruption of both hot legs, enhancing safety and fault isolation. By using the precise part number—3VA5140-4ED21-0AA0—you can confirm exact fit and electrical characteristics for your application, reducing the risk of mismatched replacements.

Ideal use cases

• New installations in factories, warehouses, or processing plants that run on 480 V
• Panel maintenance and component upgrades within existing Siemens-based electrical systems
• Replacement of degraded protective devices to restore reliable overcurrent protection
• Spare parts inventories for high-uptime industrial environments

Compatibility and support

Compatibility note: Verify fit by part number and application requirements. If you’re unsure about compatibility, we can help confirm that 3VA5140-4ED21-0AA0 matches your equipment and protection needs—feel free to message us for guidance.

When you choose this Siemens circuit breaker, you’re investing in durable protection for your 480 V distribution and two-pole circuits, designed to integrate smoothly with appropriate Siemens electrical infrastructure and service workflows. It’s a practical, purpose-built solution for industrial service, maintenance, and replacement projects that demand dependable, ready-to-install protection.