Siemens CQD320 20A 3P 480V Circuit Breaker | AmpState

Siemens CQD320 20A 3P 480V Circuit Breaker is built to stand up to the demands of everyday electrical work. Designed for reliable circuit protection in panelboards, load centers, and broader electrical distribution systems, this 3-pole, 480-volt breaker is ready to safeguard three-phase circuits with precision.

Key advantages that matter in real-world projects:

• Three-pole protection for 480V systems: Optimized for three-phase distribution, delivering a robust 20 A rating for branch circuits in commercial and industrial environments.
• Original BOM alignment for replacements: Ideal for replacement projects and stocking spares while keeping the BOM aligned to the original part number, reducing mismatch risks at install time.
• Trusted Siemens engineering: CQD320 represents Siemens’ decades of experience in dependable electrical protection, designed for dependable operation in demanding panel configurations.
• Versatile application footprint: Suitable for panelboards, load centers, and general electrical distribution layouts—easy to source and integrate into existing systems.
• Support for compatibility checks: Need help matching a part number or confirming fit? Message us and we’ll help you verify compatibility.

Practical use cases and scenarios:

• Replacement projects where the original CQD320 part number is specified by maintenance teams or facility managers, ensuring seamless operational continuity.
• Spare stock for maintenance windows—keeping a 20 A, 3P, 480V breaker on hand helps minimize downtime during panel servicing.
• New installations in 480V three-phase feeders within commercial or light industrial distributions, where a reliable Siemens breaker provides consistent protection.

Specs at a glance

• Manufacturer: Siemens
• Part Number: CQD320
• Product Type: Circuit Breaker
• Amperage: 20 A
• Poles: 3
• Voltage: 480V
• Availability: AmpState

For professionals who value precise fit and dependable protection in their electrical distribution schemes, the Siemens CQD320 20A 3P 480V circuit breaker delivers clear, tangible benefits—from BOM-consistent replacements to quick, reliable service in demanding panel setups.