Siemens CQDA2 2A 240V Circuit Breaker, Auxiliary Switch | AmpState

Meet the Siemens CQDA2—a compact 2 A, 240 V circuit breaker equipped with an integrated auxiliary switch. Built for everyday electrical work, it delivers dependable circuit protection in panelboards, load centers, and distribution systems, making it a practical, ready-to-install solution for service and installation projects.

Exact part compatibility matters. The CQDA2 is designed to align with the original BOM, offering a smart replacement option when upgrading or stocking spares. This translates to streamlined project documentation, reliable part traceability, and less guesswork during installations.

Key advantages you’ll notice on the job

• Auxiliary switch for enhanced control: Remote signaling or interlock capabilities let you monitor status quickly and manage complex electrical setups safely.
• Original-part alignment: Maintains BOM integrity so replacements fit without modification, reducing downtime and configuration errors.
• Proven Siemens reliability: Engineered to withstand everyday loads with consistent performance across service life.
• Compact, versatile form: Ideal for crowded panelboards and load centers where space efficiency matters.
• Spare-part readiness: A solid choice for stocking spares to keep maintenance schedules on track.

Key specifications

• Manufacturer: Siemens
• Part Number: CQDA2
• Product Type: Circuit Breaker
• Amperage: 2 A
• Voltage: 240 V
• Auxiliary switch: Integrated

Who benefits most

• Electricians and electrical contractors needing a dependable, ready-to-install breaker for panelboards and load centers
• Projects where exact part fit and BOM alignment are priorities
• Maintenance teams and facilities managers seeking reliable spares to minimize downtime

Use cases and practical insights

• Upgrading an aging panel or replacing a failed unit where the original part number must be preserved for documentation
• Installing in distribution setups that require both circuit protection and remote signaling via the auxiliary switch
• Stocking a reliable spare that aligns with established BOMs, ensuring quick swap-outs during service windows

Need a quick fit confirmation or BOM alignment check? AmpState offers specialized assistance to verify that the CQDA2 matches your BOM and panel configuration. Message us to confirm compatibility and get guidance on stocking the right spares for your projects.