Siemens CED63B040 - 40 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Siemens CED63B040 is a 40A, 600V, 3‑pole bolt‑on molded case circuit breaker engineered to deliver dependable branch circuit protection for panelboards and load centers. Built to endure in demanding commercial and light industrial environments, it provides precise protection for three‑phase electrical distributions while maintaining a secure, vibration‑resistant connection.

• Secure bolt‑on mounting: A rigid attachment to the panel bus minimizes movement and arcing risk in busy electrical rooms, delivering consistent protection even in vibration‑prone installations.
• Thermal‑magnetic trip unit: Combines thermal overload protection with magnetic instantaneous trip, delivering stable, repeatable responses to both slow heat buildup and sudden short circuits.
• 3‑pole design for 3‑phase systems: Specifically suited for three‑phase feeds common in commercial and light industrial panels, providing coordinated protection across all phases.
• OEM compatibility: Designed to align with matching Siemens OEM load centers and panelboards, ensuring proper fit, seamless replacement, and reliable system coordination.
• Versatile application: Ideal for residential‑adjacent commercial spaces, small offices, retail environments, and light industrial installations needing robust branch‑circuit protection.

Technical specifications

• Manufacturer: Siemens
• Part Number: CED63B040
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 40 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Mounting Style: Bolt‑on
• Application: Branch circuit overcurrent and short‑circuit protection

Why this breaker stands out

The CED63B040 is not just a component—it’s a performance cornerstone for reliable electrical protection. Its bolt‑on design ensures a sturdy, vibration‑resistant connection that maintains consistent contact over time, while the thermal‑magnetic trip unit provides fast, predictable response to overloads and fault conditions. With OEM‑level compatibility, it slots into Siemens‑designed panelboards and load centers without compromising system coordination, making upgrades, replacements, or new installs straightforward and dependable.

Practical use cases and installation notes

Use this 40A, 3‑pole breaker to safeguard three‑phase circuits in small commercial suites, retail spaces, or light industrial equipment rooms. It’s well suited for protecting motor circuits, lighting feeders, and HVAC controls where reliable trip characteristics are essential. When installing, ensure the breaker matches the OEM panelboard specifications for a proper fit, and secure the bolt‑on mounting to achieve the needed rigidity and electrical continuity. For ongoing reliability, handle with standard electrical safety practices and consult Siemens installation guidelines for torque and mounting procedures.