Siemens CED63A125L - 125 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens CED63A125L — a robust 3-pole bolt-on molded case circuit breaker engineered to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. With a secure bolt-on mounting, it establishes a rigid, vibration-resistant bus connection that stays reliable even in demanding electrical environments.

Why this breaker stands out

• Secure bolt-on mounting creates a solid, low-resistance bus connection that resists loosening under vibration or movement.
• Thermal-magnetic trip unit provides stable, repeatable protection by combining thermal overload sensing with instantaneous magnetic trip for short circuits.
• Three-pole design is ideal for balanced protection in 3-phase systems, helping protect equipment and wiring in commercial and light industrial setups.
• 125 A, 600 V rating covers typical feeders and distribution circuits found in buildings, ensuring compatibility with a wide range of panelboards and loads.
• OEM compatibility works with matching Siemens panelboards and load centers, enabling a seamless retrofit or upgrade without compatibility concerns.
• Versatile applications suitable for residential, commercial, and light industrial environments where reliable protection is essential.

Ideal use cases

Use the Siemens CED63A125L as a main or branch breaker in three-phase panelboards to safeguard feeders and equipment. It’s well-suited for service entries in small commercial spaces, multi-family residences, or light industrial applications where consistent protection against overcurrent and short circuits is critical. Its bolt-on design makes retrofits straightforward in compatible Siemens installations, helping you maintain proper circuit protection without complex mounting.

Technical snapshot

• Manufacturer: Siemens
• Part Number: CED63A125L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Installation and best practices

For reliable performance, install in accordance with Siemens installation guidelines and local electrical codes. Ensure proper bolt torque and alignment with the bus connections, and verify compatibility with your panelboard or load center before installation. The bolt-on design simplifies mounting in compatible Siemens systems, reducing retrofit downtime while delivering solid, long-lasting protection.