Siemens CED63A040L - 40 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens CED63A040L — a 40A, 600V, 3-pole bolt-on molded case circuit breaker engineered to safeguard panelboards and load centers from overcurrent and short-circuit events. Designed for dependable protection in residential, commercial, and light industrial applications, this unit combines robust mounting with precise, repeatable trip performance to keep electrical systems safe and reliable.

Why the CED63A040L stands out

• Secure bolt-on mounting delivers a rigid, vibration-resistant bus connection, minimizing loosening risks in active electrical environments and ensuring consistent protection where panels experience movement or vibration.
• Thermal-magnetic trip unit provides fast, predictable response to overloads and short circuits, with stable protection across varying loads and temperatures — helping to prevent nuisance tripping while safeguarding circuits.
• 3-pole design for 3-phase systems and a 40A rating make it ideal for distributing moderate three-phase loads in commercial spaces, light industrial equipment, and modern multi-circuit panels.
• 600V voltage rating supports a wide range of distribution setups, enabling reliable protection for both low- and mid-voltage panel networks.
• OEM-compatible selection engineered to align with Siemens’ own load centers and panelboards, reducing compatibility risks and simplifying replacement or retrofit projects.
• Versatile installation suitable for panelboards, load centers, and branch circuits where consistent, code-compliant protection matters.

Ideal use cases and practical scenarios

Use the Siemens CED63A040L when you need dependable branch-circuit protection for three-phase loads in a shared electrical room, or when retrofitting older panels that require a bolt-on solution with strong bus connections. It’s well-suited for:

• New commercial electrical rooms with compact but demanding panel layouts
• Light industrial equipment feeds where vibration and uptime are critical
• Residential-commercial hybrids that demand consistent protection across shared panelboards

How it compares to alternatives

Compared with other mounting styles, the bolt-on design of the CED63A040L emphasizes a secure, low-resistance connection that remains stable under vibration and thermal cycling. Its thermal-magnetic trip unit provides a balanced protection profile that minimizes nuisance trips while responding decisively to genuine faults. When paired with compatible Siemens load centers, it delivers streamlined maintenance and reliable coordination within your electrical distribution system.

Installation and maintenance tips

• Verify panelboard compatibility with the CED63A040L’s bolt-on footprint and bus connection before replacement or installation.
• Ensure secure torque on mounting hardware to preserve the integrity of the bus connection in environments with vibration or recirculating loads.
• Regularly test the trip function in accordance with local electrical codes and maintenance schedules to confirm reliable operation.

Technical specifications at a glance

• Manufacturer: Siemens
• Part Number: CED63A040L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Applications: Branch circuit overcurrent and short-circuit protection