Siemens | FD63B110 | Circuit Breaker | 110A | 3-Pole | 22kA

Introducing the Siemens FD63B110 circuit breaker — a purpose-built protection device engineered for reliability in demanding electrical systems. With a 110 A, 3-pole configuration and a 22 kA interrupting rating, this unit delivers dependable safeguarding for 3-phase panelboards in industrial, commercial, and retrofit applications.

• Amperage and configuration: 110 A, 3-Pole design for robust 3-phase protection.
• Interrupting rating: 22 kA withstand capability to quickly interrupt fault currents and protect downstream equipment.
• Compatibility and reference: Best reference for compatibility is the part number FD63B110, designed to fit Siemens FD63 panel systems.
• Ideal use cases: Specifically suited for maintenance, retrofit, and replacement projects where exact specs are required to maintain protection coordination.
• Reliability and design intent: Built by Siemens to deliver consistent performance in demanding environments, reducing downtime and simplifying service planning.

The FD63B110 is a precise fit for Siemens FD63 family panel boards. It’s a practical choice when upgrading or restoring protection in systems that demand a 110 A, 3-pole solution with a solid 22 kA fault current rating. Before ordering, confirm fit and ratings to ensure seamless compatibility; the part number is the most reliable reference for matching this device to your equipment.

Who benefits most: electrical professionals overseeing industrial installations, commercial distribution panels, or retrofit projects where maintaining exact specifications matters. Practical scenarios include replacing aging breakers in FD63 panels, upgrading protection for higher-load circuits, or provisioning spare parts to minimize equipment downtime.