Siemens | LXD63B450L | Circuit Breaker | 450A | 3-Pole | 600V

Engineered by Siemens, the LXD63B450L circuit breaker delivers robust, reliable protection for demanding 3-phase electrical systems. With a 450A rating, it safeguards distribution panels, switchgear, and essential equipment in industrial and commercial environments. Built for maintenance, retrofit, and replacement projects where exact specifications matter, this 3-pole unit is designed to perform reliably in systems up to 600V.

Key specifications

• Amperage: 450A
• Pole configuration: 3-Pole (3-phase protection)
• Voltage rating: 600V
• Model reference: LXD63B450L

Why choose the LXD63B450L? This Siemens circuit breaker is purpose-built for environments where reliable, high-current protection is non-negotiable. Its three-pole design aligns with common three-phase distribution setups, enabling coordinated protection across all phases. By matching the part number LXD63B450L, you ensure compatibility with existing panels and protective schemes, reducing downtime during upgrades or replacements.

Ideal use cases

• Maintenance projects that require a like-for-like replacement to minimize configuration changes
• Retrofits that upgrade a panel to handle higher current demands while preserving existing protection architecture
• End-of-life replacement in industrial and commercial electrical distributions

Important compatibility notes This part number is your best reference for compatibility. Before ordering, verify that the fit and ratings align with your system requirements. When in doubt, cross-check with the LXD63 family documentation or your panel manufacturer’s guidelines to ensure proper installation and safe operation.