Siemens LMXD63L800 - 800 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens LMXD63L800 is a purpose-built, 3-pole bolt-on molded case circuit breaker crafted to deliver dependable branch circuit protection in panelboards and loadcenters. With an impressive 800A rating at 600V, this breaker is engineered to handle demanding distributions in residential, commercial, and light industrial environments while maintaining precise, repeatable protection performance. - Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays aligned under real-world conditions - Thermal-magnetic trip unit provides fast, stable protection against both sustained overloads and sudden short circuits - 3-pole design ensures synchronized disconnection across all phases, safeguarding three-phase circuits and equipment - Compatible with matching OEM load centers and panelboards, simplifying replacement and maintenance - Built for versatility across applications—from home electrical panels to commercial distribution boards and light industrial installations - Trusted Siemens reliability paired with a design that supports long-term service and straightforward servicing - Ideal for electricians and facilities professionals who need robust, plug-and-play protection without firmware or complicated setup Who benefits most - Electrical contractors performing panelboard upgrades or replacements in existing Siemens or OEM-compatible systems - Facilities managers overseeing commercial or light industrial electrical distributions that require high-current protection - Advanced DIY electricians working on heavy-duty residential or small-business electrical upgrades who demand proven reliability How it works and why it matters - The thermal-magnetic trip unit combines thermal sensing for gradual overcurrent detection with magnetic action for rapid response to short circuits, reducing the risk of damage to downstream equipment - Bolt-on mounting creates a solid connection that resists loosening from vibration or switching transients, helping to prevent nuisance trips due to mechanical movement - A high 800A rating at 600V makes it suitable for main or branch applications in larger panels, delivering scalable protection as electrical load grows Technical snapshot - Manufacturer: Siemens - Part Number: LMXD63L800 - Type: Thermal-magnetic molded case circuit breaker - Amperage Rating: 800A - Voltage Rating: 600V - Number of Poles: 3 - Mounting Style: Bolt-on - Application: Branch circuit overcurrent and short-circuit protection - Availability: AmpState Practical installation and care tips - Verify panelboard compatibility with OEM load centers before replacement to maintain code-compliant protection - Follow Siemens installation instructions for torque and seating to maximize the integrity of the bus connection - Use this unit as part of a comprehensive protection strategy, pairing with properly sized conductors and correctly rated downstream devices - Periodically inspect mounting and connections in high-vibration environments to ensure continued reliability Siemens LMXD63L800 combines heavy-duty current handling with precise, repeatable protection in a compact, bolt-on form factor. If you’re outfitting a panelboard or loadcenter that demands robust, dependable 3-phase protection at 600V, this 800A, 3-pole breaker from Siemens—available through AmpState—delivers the performance and durability you need.