Siemens CED63B090L - 90 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Siemens CED63B090L, a 90A, 600V, 3-pole molded case circuit breaker purpose-built to protect your panelboards and loadcenters. Designed for dependable branch circuit overcurrent and short-circuit protection, this unit is a practical, reliable choice for a wide range of electrical setups—from home upgrades to light commercial installations.

• Compact molded case design — makes efficient use of panel space, helping you fit more circuits without crowding the enclosure.
• Thermal-magnetic trip unit — delivers stable, repeatable protection by combining overload sensing with instantaneous short-circuit response.
• OEM-compatible fit — engineered to pair with matching Siemens loadcenters and panelboards for seamless integration and consistent electrical characteristics.
• Versatile applications — suitable for residential, commercial, and light industrial electrical distributions, where reliable protection matters most.

Technical specifications

• Manufacturer: Siemens
• Part Number: CED63B090L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 90A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Why this 3-pole breaker matters

In three-phase panelboards, the 3-pole configuration ensures balanced protection across all phases while maintaining safe, coordinated operation of connected equipment. The CED63B090L’s compact form helps maximize panel capacity, reducing the need for multiple scattered devices and simplifying panel layouts—especially in spaces where every inch counts.

Ideal use cases

• Upgrading or expanding residential service panels to accommodate additional circuits
• Small commercial panels and light industrial distribution where reliable fault protection is essential
• Projects that require seamless integration within Siemens OEM ecosystems to simplify stocking, maintenance, and replacements

Tips for optimal installation and use

• Verify that the breaker is installed in a compatible Siemens panelboard or loadcenter designed for molded case breakers of this rating.
• Ensure proper wiring to maintain phase balance across all three poles and follow the panelboard’s installation torque specifications.
• Use as part of a broader protection strategy that matches the electrical load profiles of the connected circuits to minimize nuisance trips while preserving safety.