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

Siemens HLMXD63B800 is a rugged 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. With an 800 A rating and a 600 V maximum, it’s built to handle demanding electrical environments while maintaining precise protection performance.

Key advantages that keep power safe and steady

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays put in busy panels.
• Thermal-magnetic trip unit providing stable, repeatable protection across varying loads and fault conditions, helping prevent nuisance trips while delivering fast response to faults.
• Three-pole design delivers balanced protection across all phases in a 600 V system, ideal for 3-phase equipment and systems.
• OEM-compatible compatibility with matching Siemens OEM load centers and panelboards to simplify installation, replacement, and service in established systems.
• Versatile application suitable for residential, commercial, and light industrial settings, making it a practical choice for a wide range of distribution needs.

Technical snapshot

• Amperage rating: 800 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker
• Part number: HLMXD63B800
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and loadcenters

Who benefits from this breaker

Electrical professionals and facility managers working with Siemens ecosystems will appreciate the seamless OEM compatibility and reliable, high-capacity protection. It’s especially well-suited for contractors upgrading or expanding panelboards in commercial spaces or light industrial installations where 3-phase, 600 V service is standard and robust fault interruption is a must.

Use cases and practical considerations

• Upgrade or replace aging breakers in panelboards and loadcenters that serve high-demand branch circuits.
• Install as a main or feeder protection device in 3-phase 600 V distribution schemes in commercial or light industrial environments.
• Pair with compatible Siemens OEM panels to ensure installation compatibility and streamlined maintenance.

With the Siemens HLMXD63B800, you get a purpose-built, high-capacity protection solution that prioritizes a secure connection, predictable trip performance, and easy integration into existing Siemens electrical environments.