Siemens CQD315 - 15 A, 480 V, 3-Pole Circuit Breaker | AmpState

Meet the Siemens CQD315 — a molded-case circuit breaker engineered for dependable overcurrent and short-circuit protection in panelboards and load centers. With a 15A rating at 480V and a 3-pole configuration, this device is purpose-built for 3-phase distributions in residential, commercial, and light industrial environments. Its compact form saves valuable panel space while the thermal-magnetic trip unit delivers stable, repeatable protection you can rely on as loads and conditions change.

• Space-efficient molded-case design: optimizes panel real estate without compromising accessibility for wiring and maintenance.
• Thermal-magnetic trip unit: provides fast, predictable response to overloads and short circuits, minimizing nuisance trips and protecting downstream equipment.
• Three-pole configuration: ideal for 3-phase circuits up to 480V, delivering balanced protection across all phases.
• OEM-compatible performance: designed to fit and work seamlessly with matching Siemens panelboards and load centers for reliable interchangeability.
• Versatile applications: suitable for residential wiring upgrades, commercial electrical rooms, and light industrial panel assemblies where dependable branch circuit protection is critical.

Applications and use cases

• New installations in commercial spaces (offices, retail, data centers) that use 3-phase equipment powered at up to 480V.
• Panel replacements or upgrades within existing Siemens load centers or panelboards to restore or improve protection performance.
• Feed protection for motors, processing equipment, HVAC controllers, and other 3-phase loads where a 15A, 480V breaker is appropriate.
• Service upgrades in light industrial environments that require compact, reliable protection inside crowded distribution cabinets.

Compatibility and installation considerations

The CQD315 is engineered to be a dependable fit within Siemens OEM panelboards and load centers, helping maintain consistent electrical protection characteristics across your system. When replacing a similar device in compatible panels, you’ll benefit from the same trip curves and electrical performance that technicians rely on, while saving space with its compact molded-case design. For best results, install in accordance with local electrical codes and the panelboard’s installation guidelines, and ensure wiring conforms to conductor sizing and torque specifications recommended by Siemens.

Technical specifications

• Manufacturer: Siemens
• Part Number: CQD315
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15A
• Voltage Rating: 480V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Designed for professionals who prioritize reliable protection, predictable performance, and efficient panel design, the Siemens CQD315 15A 480V 3-Pole Circuit Breaker is a clear choice for safeguarding 3-phase circuits while maximizing space in modern electrical enclosures.