Siemens HMD63F800L - 800 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Siemens HMD63F800L is a high-capacity 3-pole molded case circuit breaker designed to safeguard your electrical systems with precision and reliability. Rated for 800 A at up to 600 V, this unit is purpose-built for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters, making it a trustworthy backbone for larger residential, commercial, and light industrial installations.

• Thermal-magnetic trip unit: Delivers stable, repeatable protection by responding quickly to short circuits while smoothly handling overloads, reducing nuisance trips and helping protect wiring and devices.
• Compact molded-case design: Maximizes panel-space efficiency, allowing more room for essential circuits without sacrificing protection or performance.
• OEM load center compatibility: Easily integrates with Siemens and matching OEM panelboards and loadcenters for a streamlined replacement or upgrade path.
• 3-pole configuration: Supports three-phase systems and multi-wire branch circuits, simplifying protection for complex electrical layouts.
• Versatile application: Suitable for residential, commercial, and light industrial environments where robust, reliable protection is critical.

Designed to be the dependable workhorse in your electrical distribution, the HMD63F800L helps you prevent damaging faults before they escalate. Its robust construction and precise trip behavior mean fewer service interruptions and greater peace of mind for building owners and technicians alike.

What makes this breaker stand out

Unlike smaller or less capable breakers, the HMD63F800L delivers high-current protection without consuming excessive panel space. Its thermal-magnetic mechanism provides clear, predictable tripping characteristics, so you know exactly when and why a circuit has opened. The 3-pole design simplifies coordination across multi-wire and three-phase circuits, reducing wiring complexity and improving reliability in dense panel configurations.

Practical use cases

Ideal for main distribution panels in multi-dwelling buildings, commercial suites, or light-industrial setups where large feeder circuits need dependable protection. It’s also a practical upgrade when expanding panels or migrating to higher-capacity protection without swapping out entire panel systems.

Technical snapshot

• Manufacturer: Siemens
• Part Number: HMD63F800L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 800 A
• Voltage Rating: 600 V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

For professionals seeking durable protection that aligns with Siemens panel ecosystems, the HMD63F800L delivers a practical blend of high-current capability, space-efficient design, and reliable protection performance. It’s a thoughtful choice for optimizing safety, panel organization, and long-term maintenance in demanding electrical environments.