Siemens CQD330 - 30 A, 480 V, 3-Pole Circuit Breaker | AmpState

Siemens CQD330 – a 30A, 480V, 3-pole molded case circuit breaker from AmpState designed to safeguard your electrical system with dependable branch circuit overcurrent and short-circuit protection. Built for panelboards and loadcenters, this breaker blends compact design with trusted Siemens engineering for reliable performance in demanding environments.

• Compact molded case design frees panel space while maintaining robust protection.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance when overcurrent or short-circuit conditions occur.
• 3-pole configuration supports 3-phase circuits, with a rating of 480V for commercial and light industrial applications.
• OEM-panel compatibility designed to work with matching Siemens and OEM loadcenters and panelboards for a seamless fit and reliable electrical coordination.
• Versatile applications suitable for residential, commercial, and light industrial installations requiring dependable 30A protection in 3-pole, 480V systems.

Technical specifications

• Manufacturer: Siemens
• Part Number: CQD330
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 30 A
• Voltage rating: 480 V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use scenarios

• Protection for branch circuits in panelboards and loadcenters within commercial and light industrial settings.
• 3-phase distribution in 480V systems where compact, reliable protection is required.
• Retrofit or new installations that require compatibility with matching Siemens OEM panels for predictable protection characteristics.

Choosing the CQD330 means prioritizing consistent protection, panel efficiency, and a proven design that aligns with Siemens’ engineering standards. For installers and facilities managers, this breaker offers a straightforward path to reliable circuit protection in environments where space, stability, and compatibility matter most.