Siemens HLMXD63B800 800A 3P 600V Circuit Breaker, Bolt-On | AmpState

Meet the Siemens HLMXD63B800, an 800 A, 3-pole bolt-on circuit breaker built for dependable everyday electrical protection in panelboards, load centers, and distribution networks. This is the smart choice for jobs where exact part-number compatibility matters and fast, secure installation is essential.

Why the HLMXD63B800 excels in three-phase protection

Designed for three-phase systems, this 3-pole breaker delivers reliable overload protection across all conductors with a robust bolt-on mounting that ensures a solid, vibration-resistant connection in standard Siemens panels and distribution equipment. Its 600 V rating makes it suitable for a wide range of industrial and commercial power environments, providing consistent performance under demanding loads.

Key specifications at a glance

• Amperage: 800 A
• Poles: 3
• Voltage: 600 V
• Type: Bolt-On Circuit Breaker
• Manufacturer: Siemens
• Part Number: HLMXD63B800

Unique value propositions that matter on the job

• Direct part-number match: eliminates guesswork on compatibility, streamlining installation and inventory management for panel builders and maintenance teams.
• AmpState availability: ready-to-ship with dependable support for fit confirmation and procurement, reducing downtime on critical projects.
• Rugged, field-ready design: built to withstand daily electrical work in commercial and industrial environments where reliability matters most.
• Clear fit guidance: if you’re unsure about compatibility, the AmpState team can help verify fit and ensure you’re ordering the exact device you need.

Ideal applications and practical use cases

Perfect for high-demand, three-phase power distribution such as manufacturing lines, large commercial electrical installations, HVAC control centers, and data-center power feeds. It’s an excellent choice for retrofit projects, panel installation programs, and as a dependable spare for field service crews who need fast, accurate part replacements.

How this compares to other options

Unlike smaller or single-pole devices, the HLMXD63B800 consolidates three-phase protection into a single, durable unit, simplifying panel layouts and improving protection coordination. The bolt-on design provides a secure mechanical connection for panels that require this mounting style, reducing the risk of loosening connections over time.

Practical tips for installation and maintenance

• Verify panel compatibility with bolt-on mounting before installation to ensure a proper fit.
• Follow standard electrical best practices for secure mounting and inspection during routine maintenance.
• Keep this model in your spare inventory to enable rapid replacements and minimize downtime during outages or fault events.
• If you’re uncertain about fit, message AmpState for quick compatibility confirmation to safeguard your project timeline.