Siemens | CFD63B150L | Circuit Breaker | 150A | 3-Pole | 600V | Feed-Through

Siemens CFD63B150L is a rugged 150A, 3‑pole, 600V circuit breaker designed to protect demanding three‑phase electrical systems. With its feed‑through construction, this unit streamlines wiring and downstream feeding, making it an ideal choice for maintenance, retrofit, and replacement projects where exact specifications must be matched.

Key specifications

• Amperage: 150A
• Poles: 3‑Pole
• Voltage: 600V
• Feed‑Through

Why this Siemens CFD63B150L stands out

• Exact compatibility reference: The CFD63B150L is the best part number to guide a precise fit in Siemens panels or other configurations that require this frame and rating.
• Three‑phase protection: The 3‑pole design provides balanced protection across all three phases, essential for maintaining system stability in motors, transformers, and distribution setups.
• Streamlined retrofit and replacements: The feed‑through design reduces wiring complexity during upgrades and enables straightforward downstream connections, saving time on installation and reducing potential miswiring.
• Durable Siemens engineering: Built to meet the reliability standards you expect from Siemens, helping minimize nuisance trips and downtime in critical applications.

Ideal use cases

• Maintenance of existing Siemens or compatible three‑phase panels where exact spec matching is required.
• Retrofits to upgrade protection while preserving the panel’s electrical architecture and downstream wiring layout.
• Replacement in legacy or service‑disruption scenarios where maintaining 150A, 3‑pole, 600V ratings is essential for continued operation.

How to confirm fit and use

• Before ordering, verify that your panel or enclosure expects a 150A, 3‑pole, 600V feed‑through breaker and that CFD63B150L is the correct reference for compatibility.
• Check the panel labeling or service documentation for the required frame size and trip characteristics to ensure the CFD63B150L matches your system’s protection needs.
• When installing, align with standard electrical safety practices and follow local codes; use the exact part number CFD63B150L to avoid mismatch.

Designed for professionals who demand reliability and precise compatibility, the Siemens CFD63B150L circuit breaker delivers dependable overcurrent protection for your three‑phase infrastructure. Whether you’re maintaining an aging installation, upgrading to a higher capacity, or replacing a failed unit, this 150A, 3‑pole, 600V feed‑through breaker is built to perform when it matters most.