Siemens MXD63L800L - 800 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens MXD63L800L — an 800A, 600V, 3-pole bolt-on molded case circuit breaker engineered for robust branch circuit protection in panelboards and load centers. Built to endure the demands of residential, commercial, and light industrial systems, this breaker delivers reliable overcurrent and short-circuit protection when it matters most.

Why the MXD63L800L stands out

• Secure bolt-on mounting: Provides a rigid, vibration-resistant bus connection that helps maintain consistent electrical performance even in dynamic environments.
• Thermal-magnetic trip unit: Combines thermal overload protection with instantaneous magnetic trip, delivering stable, repeatable protection across a wide range of fault conditions.
• OEM-compatible: Designed to be fully compatible with matching Siemens OEM load centers and panelboards for straightforward replacement and seamless integration.
• High-capacity protection: Rated for 800A at up to 600V, making it suitable for demanding branch circuits and feeder protection in larger installations.

Ideal applications and use cases

Use the MXD63L800L to safeguard critical circuits in a variety of settings:

• Residential upgrades where a durable, high-current protection device is required for main feeders or heavy-load circuits.
• Commercial panelboards and small to mid-size electrical installations needing reliable protection from overcurrent and short circuits.
• Light industrial environments where vibration resistance and secure bus connections reduce maintenance and troubleshooting.

Technical snapshot

• Manufacturer: Siemens
• Part number: MXD63L800L
• 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

What to expect and installation considerations

With the MXD63L800L, you get a durable, plug-and-protect solution that aligns with Siemens’ panelboard ecosystems, helping reduce compatibility concerns during replacement or upgrades. The bolt-on design supports a solid, low-resistance connection ideal for installations where vibration or environmental factors might challenge less robust mounting methods. Ensure your panel or load center is a compatible Siemens OEM model to maintain optimal performance and electrical safety.