Siemens BQD150 50A 1P 277V Circuit Breaker, Bolt-On | AmpState

Siemens BQD150 is a dependable circuit breaker selected for circuit protection in panelboards, load centers, and electrical distribution. Its bolt-on design makes retrofit work and maintenance planning straightforward, especially when a specific part number needs to stay consistent over time. Built for reliability, the BQD150 helps keep critical electrical systems protected without unexpected downtime.

Key specifications

• Manufacturer: Siemens
• Part number: BQD150
• Product type: Circuit Breaker
• Amperage: 50 A
• Poles: 1
• Voltage: 277 V
• Mounting: Bolt-On
• Availability: Available from AmpState

Ideal use cases and benefits

• Retrofit projects in existing panelboards or load centers where keeping the same part number simplifies inventory and maintenance planning.
• Electrical distribution setups that require single-pole protection at 50 A for 277 V circuits, common in assorted commercial or light industrial applications.
• Maintenance and service scenarios that demand quick, secure bolt-on installation for fast replacements and minimal downtime.
• Long-term reliability for panels that rely on a trusted Siemens design to maintain consistent performance over time.

Why this matters for your system

• Consistent part numbering reduces confusion during repairs and spares management, helping technicians locate the exact replacement quickly.
• Bolt-On mounting offers a solid, low-profile connection that supports durable operation in distribution equipment.
• 277 V compatibility broadens applicability for distribution circuits that don’t run at standard 120/240 V in certain commercial environments.
• Partner support from AmpState ensures you have a direct resource if you need help confirming fit or compatibility with your panels.

Installation and compatibility tips

For professionals managing panel upgrades or selective protections, the Siemens BQD150 provides a clear path to maintain consistent hardware across your distribution network. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.