Siemens | LMD63B700 | Circuit Breaker | 700A | 3-Pole | 600V

The Siemens LMD63B700 circuit breaker is a high-capacity, three-pole protection device designed for demanding 600V three-phase systems. With a 700A rating, it delivers reliable overcurrent protection for large feeders and equipment, while maintaining seamless compatibility with Siemens panels and switchgear.

Designed for maintenance, retrofit, and replacement projects where exact specifications matter, the LMD63B700 helps you upgrade or restore protection without the need to re-engineer buswork or introduce compatibility risks. Rely on Siemens engineering to preserve electrical performance and safety in your distribution network.

Key specifications

• Amperage: 700A
• Poles: 3-Pole
• Voltage: 600V
• Part number: LMD63B700

Ideal use cases

• Replacement for worn or failed 3-pole breakers in 600V industrial panels and switchgear
• Retrofits where a Siemens-compatible 700A, 3P, 600V protection device is required
• New installations in systems that demand exact Siemens specifications for reliable trip characteristics and physical fit

Fit, compatibility, and ordering notes

Important: Confirm fit and ratings before ordering. The part number is the best reference for compatibility, ensuring seamless interchange with existing Siemens equipment and panel schedules.

Practical setup and best practices

• Cross-check the panel model and service conditions to verify that a 700A, 3-Pole, 600V device matches the system requirements
• Refer to the panel’s documentation and your electrical schematics to ensure correct mounting and wiring configuration
• Keep a spare LMD63B700 on hand for rapid replacement to minimize downtime during maintenance windows
• Follow standard lockout/tagout procedures and verify power isolation before removal or installation