Siemens BQD350 50A 3P 480V Circuit Breaker, Bolt-On | AmpState

Introducing the Siemens BQD350 — a bolt-on, 50 A, 3-pole circuit breaker designed for robust protection in panelboards, load centers, and electrical distribution networks. Built for 480 V three-phase systems, this unit is purpose-built for retrofit projects and maintenance plans where preserving the exact part number matters for stock, compatibility, and service continuity.

Why the Siemens BQD350 stands out

• Bolt-On mounting for quick, straightforward replacements in existing enclosures, minimizing downtime during maintenance or upgrades.
• Three-pole configuration tailored for 480 V three-phase distribution, supporting reliable protection across commercial and light industrial applications.
• Part Number BQD350 and Siemens manufacture provide consistent inventory, predictable performance, and simplified parts planning across service life.
• AmpState availability ensures you can source this exact unit when you need it, simplifying procurement and project scheduling.

Ideal use cases and scenarios

Perfect for updating or maintaining existing systems without changing the part numbers you’ve standardized on. Use it in panelboards and load centers that rely on 480 V three-phase protection, whether you’re performing routine maintenance, retrofitting older installations, or planning long-term electrical distribution upgrades. Its bolt-on design helps technicians swap units quickly during scheduled downtime, reducing disruption to operations.

Key specifications at a glance

• Manufacturer: Siemens
• Part Number: BQD350
• Product Type: Circuit Breaker
• Amperage: 50 A
• Poles: 3
• Voltage: 480 V
• Mounting: Bolt-On
• Availability: AmpState

What problem this solves

When maintaining or upgrading distribution systems, keeping the same part number simplifies inventory management and reduces compatibility risk. The Siemens BQD350 delivers reliable, three-phase protection at a practical 50 A rating, with a bolt-on design that speeds replacements without altering wiring configurations. This makes it a dependable choice for facilities that depend on consistent parts for fast, predictable maintenance cycles.

Who should consider this model

Facilities engineers, electrical contractors, and maintenance teams responsible for panelboards and load centers that operate at 480 V three-phase. If your project calls for a consistent, bolt-on 50 A, 3P, 480 V solution from Siemens, the BQD350 is engineered to fit seamlessly into your existing distribution strategy.

Need confirmation of fit or compatibility with your specific panel? AmpState provides support to verify the right match, ensuring your retrofit or maintenance plan stays on track with minimal risk to downtime.