Siemens | HLD63B300 | Circuit Breaker | 300A | 3-Pole | 600V | Bolt-On

Siemens HLD63B300 Circuit Breaker is a rugged, bolt-on solution built for demanding electrical environments. With a 300A rating across 3 poles and a 600V operating capacity, this breaker is designed to protect three-phase circuits while fitting into compatible panels during maintenance, retrofit, or replacement projects.

• Amperage: 300 A
• Poles: 3-Pole
• Voltage: 600 V
• Mounting: Bolt-On
• Reference: Part number HLD63B300

What makes this Siemens bolt-on breaker stand out is its precise compatibility with systems that require exact specifications. The 3-pole configuration supports three-phase protection for demanding industrial applications, while the bolt-on design enables straightforward installation in appropriate panels. This combination is particularly valuable for service teams handling routine maintenance, panel retrofits, or part replacements where seamless integration matters as much as protection.

Why choose the HLD63B300 for your project

• Exact specification match ensures reliable protection for 3-phase circuits up to 600V.
• Bolt-On mounting offers a secure, service-friendly installation in compatible panel configurations.
• The part number HLD63B300 is the strongest reference point for compatibility, helping you avoid mismatches during orders.

Ideal use cases

• Maintenance outages where a precise 300A, 3-pole, 600V breaker is needed to restore circuits quickly.
• Retrofit projects that require upgrading or replacing older breakers with a matching Siemens spec.
• Replacement scenarios in panels designed for bolt-on, three-phase protection with 600V capacity.

Before placing an order, confirm the fit and ratings to ensure seamless interchangeability with your existing equipment. Rely on the HLD63B300 part number as the most reliable reference for compatibility, and standardize on a Siemens solution that aligns with your panel’s architecture and safety requirements.