Siemens | FXD63B110L | Circuit Breaker | 3-Pole

Siemens FXD63B110L is a 3-Pole circuit breaker engineered for reliable overcurrent protection in three-phase electrical systems. Whether you’re performing maintenance, a retrofit, or a replacement, this unit is built to meet exact specs when compatibility is critical.

• Poles: 3-Pole
• Part reference: FXD63B110L
• Compatibility note: The FXD63B110L part number is the best reference for ensuring a proper fit with your panel or enclosure.
• Usage focus: Suitable for maintenance, retrofit, and replacement scenarios where exact specifications are required.
• Fit guidance: Confirm the exact fit and ratings before ordering to avoid mismatches.

In a three-phase setup, a 3-Pole breaker provides synchronized protection across all phases, helping prevent unbalanced loads and ensuring predictable shutdowns during fault conditions. This Siemens unit aligns with standard industrial panels that rely on precise trip behavior and durable performance, backed by Siemens’ engineering heritage. Ideal for professionals upgrading panel protection in commercial or light industrial environments; technicians conducting retrofits or replacements in existing Siemens-compatible panels; and maintenance teams seeking precise specifications for safety updates. Practical tips:

• Power down the system and follow lockout/tagout procedures before handling breakers.
• Use the FXD63B110L part number as the primary reference to confirm compatibility with panels, enclosures, and bus configurations.
• Check the panel’s documentation for the correct voltage and current ratings; substitute only with matching specifications.
• Consult a qualified electrician to ensure proper seating, torque, and secure terminations for reliable operation.

With Siemens’ proven reliability, the FXD63B110L 3-Pole circuit breaker delivers dependable protection for your three-phase distribution, making it a thoughtful choice for ongoing maintenance, precise retrofits, and accurate replacements.