Siemens CQD325 - 25 A, 480 V, 3-Pole Circuit Breaker | AmpState

Meet the Siemens CQD325 — a 25A, 480V, 3-pole molded case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. Built for robust performance in demanding environments, it’s a practical choice for both new installations and upgrades.

• Compact, space-efficient design. The molded case form fits neatly in crowded panels, helping you maximize usable space without compromising protection.
• Thermal-magnetic trip unit for stable protection. Combines gradual thermal sensing with instantaneous magnetic trip, delivering repeatable protection across temperature swings and varying load conditions.
• 3-pole configuration for 480V systems. Ensures coordinated protection across all three phases, essential for balanced operation in 3-phase electrical networks.
• OEM panel compatibility. Specifically designed to be compatible with matching Siemens load centers and panelboards for reliable fit and electrical coordination.
• Versatile applications. Ideal for residential, commercial, and light-industrial environments where dependable protection and long-term reliability matter.

Technical snapshot

• Manufacturer: Siemens
• Part number: CQD325
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 25 A
• Voltage rating: 480 V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Practical usage and guidance

• Choose the CQD325 when you need dependable protection for 3-phase loads at 480V, such as industrial feeders, commercial equipment circuits, and large lighting or HVAC installations.
• Verify panel compatibility before installation to ensure a seamless fit with your existing Siemens load center or panelboard lineup.
• For optimal protection coordination, replace related breakers in the same panel to maintain balanced trip characteristics across all phases.