Siemens | HHLXD63B300 | Circuit Breaker | 3-Pole

Siemens HHLXD63B300 is a 3-pole circuit breaker designed to deliver reliable protection for three-phase electrical systems. Ideal for maintenance, retrofit, and replacement projects where exact specifications are essential, this unit helps safeguard equipment and personnel while minimizing downtime.

What this exactly is

This Siemens circuit breaker is identified by the part number HHLXD63B300, a reference used by technicians and installers to ensure precise compatibility with compatible panels and systems.

Key compatibility and fit details

• Poles: 3-Pole
• Best compatibility reference: use the part number HHLXD63B300
• Important note: Confirm fit and ratings before ordering to ensure seamless replacement or retrofit

Ideal use cases

• Maintenance on existing Siemens panels and equipment
• Retrofit projects where a direct, exact-match breaker is required
• Replacement of a worn or failed three-phase protective device in industrial or commercial installations

Why choose this Siemens breaker

Choosing a Siemens HHLXD63B300 means opting for a trusted, standardized solution that aligns with established service manuals and installation practices. Its three-pole design guarantees simultaneous disconnection of all three lines in a 3-phase circuit, helping reduce arc flash risk and ensure consistent protection across your system.

Practical tips for installation and maintenance

• Verify your panel’s rating and the breaker’s trip curve against your existing specifications before purchase
• Keep the HHLXD63B300 part number on hand as your go-to reference for future maintenance or stock replenishment
• Document replacement events with the part number to streamline future service calls and audits