Siemens CFD63A250L - 250 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens CFD63A250L is a robust 3-pole bolt-on molded case circuit breaker rated at 250A and 600V, engineered for dependable branch circuit protection in panelboards and load centers. Designed to keep critical circuits safe, it stands up to the demands of busy electrical environments while delivering precise, repeatable protection you can count on.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, preserving conductor integrity and reducing the risk of loose connections in demanding installations.
• Thermal-magnetic trip unit delivers stable, repeatable protection by accurately responding to overloads and short circuits, helping prevent nuisance trips and protecting downstream equipment.
• 3-pole design for 3-phase systems supports three-phase circuits up to 600V, making it ideal for commercial and light industrial panelboards and load centers.
• OEM-compatible designed to pair with matching Siemens load centers and panelboards for seamless replacement and consistent performance.
• Versatile protection suitable for residential, commercial, and light industrial applications that require reliable branch circuit overcurrent and short-circuit protection.

Technical specifications

• Manufacturer: Siemens
• Part Number: CFD63A250L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 250A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Why it matters for your electrical system

• Protects feeders and downstream equipment from overloads and short circuits, reducing the risk of electrical fires and costly downtime.
• Offers a sturdy, vibration-resistant connection that maintains consistent electrical performance in environments with equipment movement or vibration.
• Provides reliable three-phase protection in panelboards and load centers, helping you meet safety codes and ensure system uptime.

Ideal use cases

Upgrade or replace breakers in Siemens panelboards and load centers used in commercial spaces or light industrial settings. Suitable for three-phase motor feeders, HVAC control circuits, lighting panels, and other essential branch circuits that demand high-current protection at 600V.

Practical considerations for installation and maintenance

• Confirm panelboard compatibility with the CFD63A250L to ensure proper fit and coordinated protection.
• After installation, periodically inspect bolt-on connections to maintain a tight, vibration-free interface and prolong service life.