Siemens | HLD63B300L | Circuit Breaker | 3-Pole

Meet the Siemens HLD63B300L 3-Pole Circuit Breaker—engineered for dependable protection in maintenance, retrofit, and replacement projects where exact compatibility matters. Identified by its part number, HLD63B300L, this breaker is your trusted reference when ensuring seamless integration with Siemens panels and systems.

• Three‑pole design—provides synchronized protection across all three phases, ideal for 3‑phase electrical distributions and panel assemblies.
• Exact compatibility—the part number HLD63B300L is the most reliable reference for matching your existing equipment. Always verify fit and ratings against your panel specifications before purchasing.
• Versatile application—perfect for routine maintenance intervals, retrofit upgrades to align with updated protection needs, or straightforward replacements within Siemens‑equipped installations.
• Reliability you can count on—built to meet Siemens engineering standards, delivering consistent performance in demanding commercial and industrial environments.
• Clear identification and guidance—use the documented part number to confirm compatibility with your equipment and avoid mismatches that can disrupt service.

If you’re upgrading a panel or replacing an aging protective device in a Siemens ecosystem, the HLD63B300L 3‑pole breaker offers the precise fit you need. Before ordering, double‑check the panel model, supported ratings, and the required trip characteristics to ensure a seamless, drop‑in replacement that maintains system safety and performance.