Siemens FXD63L150L - 150 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens FXD63L150L is a 150 A, 600 V, 3-pole bolt-on molded case circuit breaker built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. This unit embodies Siemens’ reliability, designed to stand up to the demands of residential, commercial, and light industrial installations.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, reducing the risk of loosening and maintaining consistent electrical contact in busy panels.
• Thermal-magnetic trip unit delivers stable, repeatable protection by accurately responding to both overloads and short circuits, helping prevent nuisance trips and equipment damage.
• OEM-ready compatibility—specifically designed to work with Siemens OEM load centers and panelboards for streamlined installation and dependable performance.
• Versatile for multiple settings—ideal for residential, commercial, and light industrial applications where robust 3-pole protection is required.

Key specifications

• Manufacturer: Siemens
• Part number: FXD63L150L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 150 A
• Voltage rating: 600 V
• Poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

What this means for your project

When you’re wiring panelboards or load centers, the FXD63L150L offers predictable protection characteristics you can rely on. The bolt-on design makes for a solid bus connection in environments with vibration or frequent panel access, while the thermal-magnetic trip mechanism ensures fast, decisive action on short circuits and sustained overloads. With Siemens’ track record and OEM compatibility, you’ll experience a smoother installation workflow and consistent performance across compatible panel products.

Who should consider this breaker? Electricians and facility managers tackling residential multi-unit builds, small commercial suites, and light industrial enclosures where a 3-pole, 150 A protection device is appropriate. If you need a dependable, drop-in compatible solution that communicates clearly with Siemens panels, the FXD63L150L is engineered to fit your workflow and protect your electrical system.