Siemens HMXD63B800 - 800 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens HMXD63B800 — an 800 A, 600 V, 3-pole bolt-on molded case circuit breaker built to safeguard your electrical distribution with precision and reliability. Designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers, this unit brings rugged performance to demanding environments.

With a thermal-magnetic trip unit, you get stable, repeatable protection that calmly handles ordinary overloads and delivers rapid response to short circuits. The result is fewer nuisance trips and consistent protection for your critical circuits, day in and day out.

• Bolt-on mounting: secure, vibration-resistant connection for a rigid bus interface, ideal in installations where reliability matters most.
• 3-pole configuration: optimized for three-phase systems common in commercial and light industrial settings.
• 600 V rating: suitable for higher-voltage distribution while maintaining precise protection thresholds.
• 800 A rating: designed to protect high-current feeders and main distribution paths without compromising performance.
• OEM compatibility: engineered to fit seamlessly with matching Siemens load centers and panelboards, simplifying upgrades and replacements.

This device is an excellent fit for residential, commercial, and light industrial installations where robust protection and long-term reliability are essential. Use it as main feeder protection in service panels or as a reliable branch-circuit safeguard in larger panelboards. The bolt-on design not only secures a durable connection but also supports straightforward retrofits within compatible Siemens assemblies.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: HMXD63B800
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 800 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection