Siemens BQD325 - 25 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens BQD325—a 25A, 480V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection for panelboards and load centers. Built to stand up to demanding electrical environments, it couples rugged mounting with precise thermal-magnetic protection to keep your distribution system running smoothly.

• Secure bolt-on mounting: Delivers a rigid, vibration-resistant connection to the bus, reducing movement and arcing in busy electrical spaces.
• Thermal-magnetic trip unit: Combines thermal overload and magnetic short-circuit protection for stable, repeatable performance across a range of fault currents.
• 3-pole, 480V design: Ideal for three-phase distributions in commercial and light industrial settings, supporting balanced 480V circuits reliably.
• OEM compatibility: Engineered to pair with matching Siemens load centers and panelboards for a seamless, coordinated protection system.
• Versatile application: Suitable for residential, commercial, and light industrial installations where robust 480V protection is required.

Technical specifications

• Manufacturer: Siemens
• Part number: BQD325
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 25A
• Voltage rating: 480V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use scenarios: upgrade or retrofit a 3-phase 480V panel in commercial facilities, protect motor starter circuits and lighting feeders, or replace aging breakers in panelboards that demand steady trip performance and a secure mechanical connection. The BQD325’s bolt-on design simplifies installation in compatible Siemens OEM panels, while its thermal-magnetic trip unit helps prevent nuisance trips and minimizes downtime during faults.

Why choose the Siemens BQD325? It’s not just a breaker—it’s a reliable protection partner that combines durable construction, precise protection, and seamless integration with Siemens panel ecosystems. For electricians, facilities managers, and panel builders aiming for consistent protection in 480V systems, this 3-pole bolt-on solution delivers clear advantages in safety, reliability, and long-term performance.