Siemens 3VA5211-5EC31-0AA0 Circuit Breaker, 110A, 3-Pole, 690V

Meet the Siemens 3VA5211-5EC31-0AA0 circuit breaker—a rugged, industrial-grade solution engineered for demanding electrical service, routine maintenance, and seamless replacements. With a 110 A rating and a 3-pole configuration, this unit provides dependable overcurrent protection for three-phase systems up to 690 V, helping protect equipment, reduce downtime, and keep critical operations running smoothly.

Why this model stands out

• Three-pole design purpose-built for three-phase power distribution, ensuring balanced protection across all phases.
• 110 A nominal current rating tailored for feeders, motor circuits, and distribution panels in industrial environments.
• 690 V maximum system voltage, making it suitable for a wide range of industrial power applications.
• Solid Siemens build quality that integrates with Siemens switchgear and panels, delivering reliable performance in harsh environments.
• Explicit part-number guidance: using 3VA5211-5EC31-0AA0 ensures you’re selecting a compatible unit for your application.

Key specifications at a glance

• Manufacturer: Siemens
• Part Number: 3VA5211-5EC31-0AA0
• Product Type: Circuit Breaker
• Amperage: 110 A
• Poles: 3
• Voltage: 690 V
• Notes: Verify fit by part number and application requirements

Ideal use cases

• Industrial power distribution panels and switchgear where robust three-phase protection is required.
• Maintenance projects and component replacements in factories, plants, and processing facilities.
• New installations that demand a reliable Siemens-provided protection solution with a clear part-number path for compatibility.

Compatibility and fit: how to confirm

Always verify fit by the exact part number 3VA5211-5EC31-0AA0 and align with your application requirements (voltage, current, and pole count). This helps ensure seamless integration with your existing panels, busbars, and electrical infrastructure. If you need a quick compatibility check, send us the part number and your system details—we’re ready to assist.

What problems this solves—and what you can expect

• Protects downstream equipment from overcurrent conditions, reducing the risk of damage and unplanned downtime.
• Provides clear, switch-ready protection in three-phase networks, supporting safer operation and easier maintenance.
• Supports reliable replacements and upgrades within legacy or modernized plants without sacrificing performance.

Practical tips for installation and operation

• Use the exact part number to confirm compatibility with your existing switchgear and distribution panels.
• Adhere to standard electrical safety practices during installation and follow Siemens installation guidelines for triple-pole devices.
• Plan for future scalability by choosing a model that aligns with your current load and potential growth in three-phase circuits up to 690 V.