The Siemens LMD63F800 is a high-capacity three-pole circuit breaker designed to safeguard panelboards, load centers, and electrical distribution networks. Built for demanding electrical environments, this 800 A, 3-pole unit delivers reliable protection where large three-phase loads demand dependable interrupting capability. Designed for OEM compatibility and easy BOM alignment, the LMD63F800 lets you match the original part number precisely. This makes it an ideal choice for replacement projects where exact part replication is critical for performance, safety, and system continuity. Keeping a spare on hand helps you minimize downtime and keeps your panel schedule intact without unexpected part mismatches. Key benefits and use cases
- Exact OEM fit: Part Number LMD63F800 ensures seamless cross-compatibility with Siemens installations and existing documentation.
- Robust three-phase protection: With an 800 A amperage rating across 3 poles, it’s suited for demanding industrial and commercial distribution setups.
- Ideal for replacements and spares: Maintain BOM integrity and simplify procurement with a part that mirrors the original configuration.
- Ready for stocking: A dependable, long-lead option for maintenance inventories and service crews who service Siemens-based systems.
- Expert support when assessing fit: “Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.” Who this is for
- Electrical contractors and integrators replacing worn or obsolete breakers in Siemens-based panelboards and load centers.
- Facilities managers at industrial, commercial, or campus-scale sites needing reliable, OEM-aligned spare parts.
- Shops and distributors stocking authentic Siemens components to streamline maintenance cycles. Why it matters
Choosing the exact Siemens LMD63F800 ensures consistent electrical protection behavior, straightforward field installation, and alignment with existing documentation and schematics. It reduces the risk of mismatched parts that can delay repairs or compromise system safety, and it supports a smoother BOM revision process during upgrades or expansions. What you’ll get and how to use it
- A genuine Siemens 800 A, 3-pole circuit breaker ready for integration into compatible panelboards and load centers.
- Clear alignment with the original part number to preserve system integrity and facilitate future maintenance.
- A practical, ready-to-stock solution for fast, reliable replacements during scheduled maintenance or emergency repairs. If you’re coordinating a rebuild, retrofit, or routine replacement on Siemens-based electrical systems, the LMD63F800 is purpose-built to deliver dependable protection while keeping your BOM and procurement processes clean and straightforward.