Siemens | LMXD63B800 | Circuit Breaker | 800A | 3-Pole | 600V | Bolt-On

Meet the Siemens LMXD63B800 circuit breaker — a robust, bolt-on solution crafted for demanding three-phase power systems. With an 800 A rating, 3-pole configuration, and a 600 V operating ceiling, this breaker is built to protect high-current networks while simplifying retrofit and replacement projects. Designed for maintenance, retrofit, and replacement scenarios, it’s the dependable choice when your panel requires exact Siemens specifications.

Key specifications

• Amperage: 800 A
• Poles: 3-Pole
• Voltage: 600 V
• Mounting: Bolt-On
• Part number: LMXD63B800
• Application: Maintenance, retrofit, and replacement in systems requiring matching specs
• Note: Confirm fit and ratings before ordering. The part number is the best reference for compatibility.

Why this Siemens breaker stands out

• Secure bolt-on mounting: Provides a solid electrical and mechanical connection ideal for high-current, industrial environments where vibration or movement is a concern.
• Exact compatibility: The LMXD63B800 is purpose-built to match Siemens panels and assemblies that require an 800 A, 3-pole, 600 V breaker, making retrofits and replacements straightforward.
• Reliability in demanding conditions: Siemens engineering delivers consistent protection for critical distribution circuits, helping minimize unplanned downtime.
• Clear reference for compatibility: Rely on the LMXD63B800 part number to avoid guesswork during procurement and ensure a precise match for your system.

Ideal use cases

• Upgrading or replacing aging or non-matching breakers in 3-phase distribution panels that operate up to 600 V.
• Retrofit projects where a high-current, 800 A rating is required to support large loads or feeders.
• Maintenance scenarios that demand a dependable, field-ready bolt-on solution with a proven track record in Siemens ecosystems.

Practical installation and care tips

• Safety first: Ensure the electrical system is de-energized and locked out before attempting to install or replace the breaker.
• Follow panel guidelines: Use the breaker in panels that specify bolt-on 800 A, 3-pole, 600 V devices and refer to the panel’s compatibility list.
• Torque and connections: Secure mounting and lugs per Siemens installation instructions to maintain reliable protection and minimize future loosening risks.
• Verification: After installation, perform a system check to confirm proper tripping behavior under fault conditions and validate that rating and configuration match your protection plan.

The Siemens LMXD63B800 is more than a replacement part — it’s a purpose-built solution for high-current, three-phase protection that aligns with your existing Siemens infrastructure. When your goal is dependable performance, precise compatibility, and a straightforward retrofit path, this 800 A, 3-pole, 600 V bolt-on breaker delivers.