Siemens CFD63A150 - 150 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Siemens CFD63A150 is a rugged 150 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to guard your panelboards and load centers against overcurrent and short-circuit faults. Built for dependable,-repeatable protection, this unit delivers a solid, vibration-resistant connection and precise trip performance for demanding electrical layouts.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays solid under operation, reducing connection fatigue over time.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overloads and short circuits with predictable trip behavior.
• Three-pole design ideal for three-phase circuits, ensuring balanced protection across all phases in commercial and light-industrial setups.
• 150 A at 600 V capacity supports medium-duty branch circuits, offering reliable protection for feeders, motors, and equipment in panelboards and load centers.
• OEM-compatible engineered to work with matching Siemens and OEM load centers and panelboards for straightforward replacement and serviceability.

Who benefits most from the CFD63A150? electrical professionals and facility managers working in residential, commercial, and light industrial environments who need a durable, easy-to-install breaker that maintains consistent protection across varied loads. It’s an excellent choice when upgrading or retrofitting panels that require solid three-phase protection and dependable fault clearing.

Ideal use cases

• Three-phase feeders for commercial electrical rooms and light industrial equipment
• Panelboard or load center upgrades where bolt-on mounting is preferred
• New installations requiring a robust, consistent thermal-magnetic protection profile
• Repairs or replacements in existing Siemens-compatible panel systems to ensure seamless operation

Technical specifications at a glance

• Manufacturer: Siemens
• Part number: CFD63A150
• 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

Choose the CFD63A150 for reliable, long-lasting protection that aligns with Siemens’ engineering standards and is readily compatible with OEM panelboards and load centers. Its bolt-on design simplifies installation, while the thermal-magnetic trip unit provides clear, predictable protection that operators can trust under real-world conditions.