Siemens CFD63S250 A - 250 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens CFD63S250A — a rugged 3‑pole bolt‑on molded case circuit breaker designed to safeguard large branch circuits with precision. Rated at 250A and 600V, this unit is built to stand up to demanding commercial and light industrial environments while delivering dependable protection in residential panel systems that require robust, three‑phase safeguarding.

Key advantages that set this breaker apart:

• Secure bolt‑on mounting: A rigid, vibration‑resistant connection to the bus minimizes movement and contact wear, helping maintain consistent electrical performance even in panels with heavy or variable loads.
• Thermal‑magnetic trip unit: Combines thermal and magnetic sensing for stable protection across temperature changes and fault scenarios, delivering repeatable trip behavior when overcurrent or short circuits occur.
• OEM compatibility: Engineered to integrate with matching Siemens OEM load centers and panelboards, simplifying replacements and system upgrades without compatibility guesswork.
• High‑capacity protection: 250A amperage rating under a 600V supply makes it ideal for protecting sizable feeders, motors, and three‑phase circuits in commercial or light industrial setups.
• Installation practicality: Bolt‑on design supports straightforward installation or retrofit in existing Siemens panels, providing a secure, long‑lasting bus connection.

Technical snapshot

• Manufacturer: Siemens
• Part number: CFD63S250A
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage rating: 250A
• Voltage rating: 600V
• Number of poles: 3
• Mounting style: Bolt‑on
• Applications: Branch circuit overcurrent and short‑circuit protection

Who should consider this breaker? engineers, electricians, and facilities managers overseeing Siemens panelboards or load centers that demand reliable 3‑pole protection for substantial loads. It’s especially well suited for upgrading aging infrastructure, setting up new commercial panels, or replacing faulty units in systems that require a robust, pre‑engineered protection solution.

Practical tips for use:

• Confirm panelboard compatibility with Siemens CFD63S250A before installation to ensure a proper bolt‑on fit and listed performance.
• Follow lockout/tagout procedures and verify that the system is de‑energized prior to mounting or removal.
• Use manufacturer‑specified torque when securing mounting bolts to guarantee a solid bus connection and prevent loosening under load.
• Plan for the thermal‑magnetic trip characteristics by evaluating inrush currents and motor starting profiles to ensure appropriate protection settings.

For dependable, industry‑standard protection in Siemens panel ecosystems, the CFD63S250A delivers a clear, purpose‑built solution. Add this reliable 250A, 3‑pole bolt‑on breaker to your electrical backbone and experience consistent protection you can trust in demanding environments — backed by AmpState’s commitment to authentic Siemens components.