Siemens ED43B025 25A 3P 480V Circuit Breaker | AmpState

Siemens ED43B025 25A 3P 480V Circuit Breaker is a purpose-built protection device designed for 3‑phase electrical distribution in panelboards and load centers. Built to support retrofit work and ongoing maintenance, this part number—ED43B025—lets you keep your existing electrical infrastructure consistent while upgrading or replacing protective components.

Designed for industrial and commercial environments that run on 480V three‑phase systems, the ED43B025 provides reliable circuit protection where it matters most. Its 25‑ampere rating and three-pole configuration make it an ideal choice for safeguarding critical distribution circuits without overcomplicating the upgrade or maintenance process.

Key specifications at a glance

• Manufacturer: Siemens
• Part number: ED43B025
• Product type: Circuit Breaker
• Amperage: 25 A
• Poles: 3
• Voltage: 480V
• Applications: Panelboards, load centers, electrical distribution
• Availability: In stock at AmpState

Why this ED43B025 stands out

• Consistency for retrofits: When part numbers must stay consistent across a project, ED43B025 slots neatly into existing Siemens installations, reducing installation risk and downtime.
• Three‑pole protection for balanced loads: The 3P design supports 480V three‑phase systems, delivering dependable protection without disrupting coordinated equipment operation.
• Inventory-friendly for maintenance planning: Keeping a stable, readily available part number simplifies stocking and procurement, making long‑term maintenance more predictable.

Ideal use cases

• Upgrading or replacing protection in industrial panelboards and distribution centers that operate at 480V three‑phase.
• Retrofit projects where preserving the original part number minimizes compatibility concerns with existing breakers and bus connections.
• Maintenance planning for facilities with standard Siemens components, ensuring quick part replacement during scheduled downtime.

How AmpState can help

Unsure if ED43B025 is the perfect fit for your specific panel or distribution setup? AmpState is ready to assist with compatibility checks and part-number confirmations to ensure a seamless match for your system. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm the fit.

For teams maintaining reliable, continuous operation, the Siemens ED43B025 25A 3P 480V circuit breaker offers a practical, proven solution that aligns with existing Siemens infrastructure while simplifying procurement, retrofits, and ongoing maintenance.