Siemens BQD170 70A 1P 277V Circuit Breaker, Bolt-On | AmpState

Siemens BQD170 is a 70A, 1-pole, 277V bolt-on circuit breaker designed for robust circuit protection in panelboards, load centers, and electrical distribution systems. Available from AmpState, this part number BQD170 is especially valuable for retrofit projects and ongoing maintenance where keeping the exact part number simplifies ordering and compatibility.

• Amperage: 70 A
• Poles: 1
• Voltage: 277V
• Mounting: Bolt-On design for secure, straightforward installation
• Manufacturer: Siemens
• Part Number: BQD170
• Applications: Panelboards, load centers, and electrical distribution networks

This breaker is particularly advantageous when you need dependable protection without changing existing hardware or configurations. The bolt-on format supports efficient replacement in systems that demand quick service and reliable, consistent performance across retrofit and maintenance cycles. By choosing the BQD170, you maintain a familiar, Siemens-origin part that aligns with established electrical distribution practices.

Use cases and ideal applications

• Retrofit projects where preserving the same part number reduces downtime and simplifies procurement.
• Maintenance planning for facilities with Siemens panelboards and load centers requiring 277V single-pole protection.
• Replacement of aging or_failed breakers in commercial or industrial electrical distributions where 277V circuits are common.

Why choose this Siemens breaker — a precise, purpose-built solution that pairs Siemens’ engineering with practical on-site needs. Its 70A rating provides solid protection for dedicated circuits, while the 1-pole, 277V configuration covers a range of commercial electrical distribution scenarios.

Need help matching a part number or confirming compatibility? Message AmpState and we’ll help you confirm the fit for your specific panelboard or load center configuration.