Siemens BQ2B040 - 40 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens BQ2B040 - 40A, 240V, 2-Pole Bolt-On Circuit Breaker is engineered to deliver reliable branch circuit protection in panelboards and loadcenters. Its bolt-on mounting creates a secure, vibration-resistant connection to the bus, helping maintain consistent electrical performance in dynamic environments. Key benefits that set this breaker apart:

• Secure bolt-on mounting for a rigid, vibration-resistant bus connection that stays put even in demanding installations.
• Thermal-magnetic trip unit delivers stable, repeatable protection across a range of loads and operating temperatures, reducing nuisance trips while safeguarding circuits.
• 2-pole, 40A, 240V configuration provides clean, dedicated protection for typical single-phase, two-wire branch circuits used in homes, offices, and light commercial spaces.
• OEM-loadcenter compatibility ensures straightforward replacement or upgrade with matching Siemens panelboards and other OEM loadcenters, minimizing integration issues.
• Rugged molded-case design built for long-term reliability in residential, commercial, and light industrial applications.

Who this is for: - Electricians and maintenance teams upgrading or stocking replacement parts for Siemens or compatible OEM panelboards - Property managers and facilities personnel overseeing residential, commercial, or light industrial electrical systems - Projects requiring dependable 40A protection for branch circuits in existing loadcenters Use cases and practical insights: - Replacing a worn or trip-prone mechanism on a Siemens-compatible 2-pole circuit in a main or sub-panel - Installing a dedicated 40A circuit for larger appliances or critical equipment in light commercial spaces - Integrating with OEM panelboards that require exact 40A, 240V, 2-pole bolt-on breakers to maintain warranty and performance standards Technical specs at a glance: - Manufacturer: Siemens - Part Number: BQ2B040 - Type: Thermal-magnetic molded case circuit breaker - Amperage Rating: 40A - Voltage Rating: 240V - Number of Poles: 2 - Mounting Style: Bolt-on - Application: Branch circuit overcurrent and short-circuit protection With the Siemens BQ2B040, you get a purpose-built solution that pairs precise protection with a robust mechanical design, tailored for reliable operation in a variety of settings.