Siemens CFD63B150 - 150 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens CFD63B150 is a 150 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection and short-circuit blocking in panelboards and loadcenters. Built to withstand vibration and harsh operating conditions, this unit is a smart choice for residential, commercial, and light industrial electrical installations.

What sets the CFD63B150 apart:

• Bolt-on mounting provides a rigid, vibration-resistant bus connection that stays secure over time, reducing movement and arcing risk in demanding environments.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overloads and short circuits, helping protect wiring and connected equipment.
• Three-pole design ideal for three-phase systems commonly found in commercial and light industrial applications.
• 600 V rating aligns with modern panelboards and distribution gear, enabling reliable protection across higher-voltage networks.
• 150 A capacity suitable for main or feeder protection on mid-range circuits, offering scalable protection as loads evolve.
• OEM compatibility ensures seamless integration with matching Siemens load centers and panelboards for proper fit and electrical performance.

Ideal use cases include upgrading existing panelboards, adding protection in new commercial installations, or retrofitting residential services that require robust three-phase protection. The CFD63B150 is particularly well-suited for spaces where vibration and durability matter—think busy mechanical rooms, retail storefronts, light industrial facilities, and modernized office buildings.

Practical considerations for installation and operation:

• Choose the bolt-on variant that matches your Siemens OEM panelboard family to ensure correct mounting alignment and trip characteristics.
• Follow proper mounting torque specifications to maintain a secure mechanical and electrical connection.
• Confirm system configuration is three-phase to match the 3-pole design; use in appropriate panelboards and distribution setups.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: CFD63B150
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 150 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Available through AmpState, the Siemens CFD63B150 is a reliable choice for professionals who demand compatibility, predictable protection, and durable performance in panelboard installations.