Siemens CFD63B250L - 250 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens CFD63B250L — a rugged 3-pole bolt-on molded case circuit breaker designed to guard panelboards and load centers from overcurrent and short-circuit events. With a 250 A rating and a 600 V maximum, it’s built to handle demanding electrical environments while delivering dependable, repeatable protection.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, helping maintain consistent electrical performance even in high-traffic electrical panels.
• Thermal-magnetic trip unit delivers stable, fast protection for both overloads and short circuits, reducing nuisance trips and protecting connected equipment.
• OEM-compatible design is engineered to work with matching Siemens load centers and panelboards, making replacements and retrofits smoother and safer.
• 3-pole configuration ensures balanced protection across three-phase systems, ideal for commercial and light industrial applications.
• Versatile protection suitable for residential, commercial, and light industrial panel installations that require reliable branch circuit overcurrent and short-circuit protection.

Why this matters: In often demanding electrical setups, a robust, predictable protection device is essential. The CFD63B250L’s combination of bolt-on rigidity and a thermal-magnetic trip means you get consistent trip characteristics, quicker fault clearance, and safer operation across your distribution network.

Ideal use cases include:

• Main distribution protection in commercial panelboards and industrial load centers with three-phase loads.
• Branch circuit protection for high-current circuits such as HVAC equipment, pumps, and motor loads.
• Retrofits or upgrades in Siemens OEM panels where matching trip curves and mounting styles simplify installation and ensure compatibility.

Key specifications (reference for planning and procurement):

• Manufacturer: Siemens
• Part Number: CFD63B250L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

For engineers and electricians selecting protective devices, the CFD63B250L offers a reliable, industry-standard solution that aligns with Siemens panel ecosystems while delivering tangible benefits in performance and ease of installation. Whether you’re equipping a new panelboard or upgrading an older installation, this bolt-on 3-pole breaker provides robust protection you can count on under real-world operating conditions.