Siemens BQD6140 - 40 A, 347 V, 1-Pole Bolt-On Circuit Breaker | AmpState

Siemens BQD6140 is a 40A, 347V, 1-pole bolt-on molded case circuit breaker engineered to protect branch circuits in panelboards and loadcenters. This compact, high-reliability unit delivers precise overcurrent and short-circuit protection where it matters most, keeping electrical systems safe and downtime minimal.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection that stays tight even in demanding environments.
• Thermal-magnetic trip unit delivers stable, repeatable protection performance, responding quickly to overloads and short circuits.
• OEM-compatible design works with matching Siemens loadcenters and panelboards for straightforward replacement and dependable fit.
• Versatile across settings ideal for residential, commercial, and light industrial applications, offering a reliable protection solution across multiple panel configurations.

Technical specifications

• Manufacturer: Siemens
• Part Number: BQD6140
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40 A
• Voltage Rating: 347 V
• Number of Poles: 1
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Designed for ease of integration into existing electrical infrastructures, the BQD6140 helps you maintain safe, compliant panels while minimizing nuisance trips and maintenance. Whether upgrading a service panel, expanding a distribution circuit, or replacing a worn breaker, this Siemens single-pole solution delivers dependable protection with straightforward installation and lasting performance.