Siemens 3VA5112-5ED21-0AA0 125A 2P 415V Circuit Breaker | AmpState

The Siemens 3VA5112-5ED21-0AA0 is a purpose-built circuit breaker designed for everyday electrical work, delivering dependable circuit protection in panelboards, load centers, and electrical distribution setups. With a 125 A rating and a 2-pole design, it safeguards both conductors while enabling clean, reliable isolation of circuits at 415 V.

Why this Siemens breaker stands out

• : True Siemens part that aligns with the original BOM, helping you maintain documentation accuracy and reduce compatibility questions during installations.
• : Robust protection for multi-wire circuits, ensuring simultaneous disconnection of both lines and improved safety during fault conditions.
• : Suitable for a wide range of distribution panels and commercial electrical systems, making it a versatile choice for many installations.
• : Ideal for replacement projects and spare stock, so you can keep critical outages to a minimum and maintain fleet continuity.
• : Part number 3VA5112-5ED21-0AA0 is explicitly matched to Siemens panelboard ecosystems, reducing guesswork when ordering.

Best use cases and applications

• Replacement projects: swap in this exact part to preserve panelboard integrity without reconfiguring wiring or protection schemes.
• Maintenance spares: keep on hand to quickly restore protection in the event of a failure, minimizing downtime for facilities and service contracts.
• Electrical distribution setups: reliable protection in commercial and industrial distribution centers where 2-pole, 125 A protection at 415 V is appropriate.

What problems does it solve?

• Eliminates the risk of mismatched replacements by guaranteeing BOM-aligned compatibility.
• Reduces downtime during service calls with readily compatible OEM parts from AmpState.
• Provides consistent, reliable circuit protection for critical electrical infrastructure in panelboards and load centers.

For whom is this ideal?

• Electrical contractors and technicians performing panelboard upgrades or routine replacements.
• Facility managers and maintenance teams seeking dependable OEM parts to keep electrical systems running smoothly.
• Procurement specialists stocking spares to ensure BOM accuracy and rapid fulfillment.

Compatibility and expert support

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit for your specific panel and distribution setup.

Product details at a glance

• Manufacturer: Siemens
• Part Number: 3VA5112-5ED21-0AA0
• Product Type: Circuit Breaker
• Amperage: 125 A
• Poles: 2
• Voltage: 415 V