Siemens BQD280 NN Molded Case Circuit Breaker

Siemens BQD280 NN Molded Case Circuit Breaker is a 2‑pole protective device rated for 80 A at 480 V AC, belonging to Siemens’ BQD family of molded‑case breakers. It provides thermal‑magnetic protection with an interrupting capacity of 14 kAIC at 480 V, making it suitable for safeguarding feeders and branch circuits in commercial and light‑industrial distribution panels. The unit also supports a DC control circuit rating of 125/250 VDC, enabling protection and control within mixed‑supply systems. As a molded‑case breaker, the BQD280 NN offers compact, reliable protection and is designed for use in compatible Siemens MCCB installations that employ BQD/CQD frame breakers, ensuring consistent trip characteristics and straightforward integration in new builds or panel upgrades. This 80 A, 2‑pole device is commonly deployed in electrical distribution enclosures to protect circuits and feeders from overcurrent events while fitting standard Siemens protection schemes.