Siemens BQD160 - 60 A, 277 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens BQD160 — a 60A, 277V, 1-pole bolt-on molded case circuit breaker designed to deliver reliable branch circuit protection for panelboards and loadcenters. Built for stability in real-world installations, its secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays dependable even in demanding environments.

The protection you want, with the precision you need: a thermal-magnetic trip unit offers stable, repeatable performance across varying loads. The thermal element handles gradual overheating, while the magnetic element reacts quickly to short circuits, safeguarding wiring and connected devices from damage and downtime.

• Secure bolt-on mounting for a robust, vibration-resistant connection to the bus
• Thermal-magnetic trip delivers dependable, repeatable protection under diverse loading
• 60A, 277V, 1-pole configuration ideal for single-phase branch circuits
• OEM-compatible with matching Siemens OEM loadcenters and panelboards
• Versatile across applications suited for residential, commercial, and light industrial panels

Specification snapshot

• Manufacturer: Siemens
• Part Number: BQD160
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 60A
• Voltage Rating: 277V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Use cases and practical scenarios:

• Protect a 277V commercial lighting circuit with a clean, dedicated 60A breaker that fits standard panelboard configurations
• Upgrade older installations to a bolt-on Siemens breaker for a more rigid, vibration-resistant connection
• Implement a reliable single-pole protection strategy in residential or light industrial panels where 277V distribution is present

Why this breaker stands out in its class: the combination of secure bolt-on mounting, a precise thermal-magnetic trip system, and deliberate compatibility with Siemens OEM panels reduces installation complexity and maintenance over the long term. It’s designed to deliver consistent protection, simplify retrofits, and keep electrical systems running smoothly in everyday builds and upgrades.