Siemens CQD230 - 30 A, 480 V, 2-Pole Circuit Breaker | AmpState

Siemens CQD230 is a purpose-built 30A, 480V, 2-pole molded case circuit breaker designed to protect your electrical system where it matters most. Engineered for dependable branch circuit overcurrent and short‑circuit protection, it integrates seamlessly into panelboards and load centers, delivering secure, repeatable performance day after day. Key reasons to choose the CQD230

• Compact molded case design: Maximizes panel space without compromising protection, making it ideal for tight electrical rooms and retrofit projects.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection—fast enough to clear faults and gentle enough to avoid nuisance trips in fluctuating load conditions.
• OEM panel compatibility: Designed to be compatible with matching Siemens OEM load centers and panelboards, simplifying installation and future servicing.
• Versatile application: Suitable for residential, commercial, and light industrial environments where reliable protection of branch circuits is essential.

What this breaker protects and where it shines

The CQD230 provides reliable overcurrent and short-circuit protection for branch circuits in elevated-voltage panels. Whether you're upgrading an older panel, configuring a new commercial distribution, or stocking spare protection for a Siemens-equipped load center, this 2‑pole device keeps circuits safe and systems running smoothly.

Technical snapshot

• Manufacturer: Siemens
• Part number: CQD230
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 30A
• Voltage rating: 480V
• Number of poles: 2
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and practical scenarios - Upgrading protection in Siemens‑equipped residential service panels where a 30A feeder or branch circuit requires dependable interruption at 480V. - Providing robust protection in commercial panelboards that service lighting, outlets, and equipment with higher-voltage requirements. - Replacing or stocking spare breakers for light industrial panels that demand reliable thermal-magnetic protection with precise tripping characteristics. Why it matters for your project - With a compact form factor, it preserves valuable panel space while maintaining robust protection against faults. - The thermal-magnetic trip mechanism combines predictability with speed, helping minimize downtime and equipment damage during fault events. - OEM compatibility reduces compatibility headaches during installation and future maintenance, ensuring easier sourcing of replacement parts and service. Availability

Available from AmpState, the Siemens CQD230 30A, 480V, 2‑pole molded case circuit breaker is a practical, reliable choice for protecting critical circuits in panelboards and load centers. Its combination of space efficiency, precise trip behavior, and OEM compatibility makes it a smart upgrade or replacement in professional electrical installations.