Siemens CED63B125L - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Siemens CED63B125L is a 125 A, 600 V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for consistent performance, its thermal-magnetic trip unit provides stable, repeatable protection across varying temperatures and electrical conditions. Designed to integrate seamlessly with matching Siemens OEM loadcenters, it’s a smart choice for reliable, compliant protection in a range of installation environments.

• 125 A at 600 V provides robust protection for medium-duty circuits in commercial and light industrial settings.
• 3-pole configuration supports balanced three-phase systems often used in commercial panels and light industrial layouts.
• Compact molded case design optimizes panel space, helping you maximize enclosure capacity without sacrificing protection.
• Thermal-magnetic trip unit delivers stable protection: the thermal element handles overloads, while the magnetic element provides fast, decisive tripping for short circuits.
• OEM panel compatibility engineered to pair with Siemens-compatible loadcenters and panelboards for straightforward installation and reliable performance.
• Versatile application suitable for residential, commercial, and light industrial electrical protection needs, making it a flexible choice for multi-site portfolios.

Why choose the Siemens CED63B125L

When everyday reliability matters, the CED63B125L combines a compact footprint with a proven thermal-magnetic trip system, delivering precise protection where it’s needed most. Its 3-pole design supports three-phase panels common in commercial and light industrial environments, while the 125 A rating covers mid-range branch circuits without requiring oversizing. The result is a protection device that reduces nuisance trips, simplifies panel design, and harmonizes with existing Siemens ecosystem components.

Practical use cases

• Protecting a three-phase panel in a small data room or workshop with multiple motors and controlled loads.
• Replacing or upgrading aging breakers in residential-to-light commercial panelboards to improve trip accuracy and space efficiency.
• Integrating into new build-outs where Siemens-compatible loadcenters are specified for consistent performance and easy procurement.

Technical snapshot

• Manufacturer: Siemens
• Part Number: CED63B125L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

For projects that demand dependable protection with efficient panel utilization, the Siemens CED63B125L stands out as a precise, compatible, and durable choice. Its combination of compact design, reliable trip performance, and seamless compatibility with Siemens panel systems helps you protect critical loads with confidence.