Siemens BQD240 Bolt On Circuit Breaker

Siemens BQD240 is a two‑pole bolt‑on molded‑case circuit breaker (frame BQD) rated for 40 amperes, designed for use in Siemens panelboards and delivering overcurrent protection on 480Y/277 VAC circuits as well as a 125/250 VDC rating. It is configured for bolt‑on installation with load‑lug terminals, enabling straightforward wiring and field replacement in panel installations. With a 14 kA interrupt rating at 480 VAC, the BQD240 withstands high fault currents typical in commercial environments, making it suitable for lighting, general distribution, and other branch circuits in both retrofit and new construction projects. It is listed for use with Siemens P1 through P5 panelboards and is UL‑listed and CSA‑certified, aligning with standard electrical safety requirements. This precise 40 A, 2P bolt‑on breaker within the Siemens BQD family is designed to integrate with Siemens panel upgrades and replacements, providing reliable protection in compact, panel‑mount form factor. Its bolt‑on mounting supports quick service and easy replacement.