Siemens F38B 3P Circuit Breaker | AmpState

The Siemens F38B 3P Circuit Breaker is built for reliable, everyday electrical protection in panelboards, load centers, and distribution systems. With its 3‑pole configuration, it is purpose‑built for three‑phase applications, delivering consistent performance where it matters most.

Key benefits and ideal use cases

• Three‑pole protection for 3‑phase systems: The F38B’s 3P design ensures balanced protection across all phases in commercial and industrial panels, helping prevent uneven load conditions and equipment damage.
• Original BOM alignment: This unit is specifically suitable for replacement projects where keeping the bill of materials aligned to the original part number is essential, reducing setup time and calibration of downstream processes.
• Reliable replacement stock: An excellent spare for service vehicles or maintenance inventories, ensuring you can swap in a like‑for‑like Siemens component quickly when a breaker fails.
• Versatile panel compatibility: Designed for use in panelboards, load centers, and electrical distribution configurations, making it a practical choice for both new installations and upgrades.

Why choose this part

The Siemens F38B stands out through its dependable performance in everyday electrical work, backed by Siemens’ reputation for protection and safety. By matching the original part number and using a proven 3P design, you gain predictable trip characteristics and straightforward maintenance planning, reducing unexpected downtime in critical electrical rooms.

Product details at a glance

• Manufacturer: Siemens
• Part Number: F38B
• Product Type: Circuit Breaker
• Poles: 3
• Availability: Available from AmpState

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

Whether you’re stocking spares, upgrading an existing installation, or aligning your BOM with the original design, the Siemens F38B 3P Circuit Breaker delivers dependable protection and straightforward compatibility. Add it to your order today to ensure you’re prepared for reliable, three‑phase electrical protection when you need it.