Siemens Q2150B QPP Industrial Circuit Breaker

Siemens Q2150B is a 150 A, two‑pole molded‑case circuit breaker from the QPP family designed for 120/240 V systems. It delivers thermal‑magnetic protection with a 10 kA interrupting rating at 240 V and is built for plug‑in installation in Siemens QPP frames, with Insta Wire wiring options for quick, reliable field connections. The compact footprint measures about 2 in high, 3 in wide, and roughly 2.3 in deep, making it suitable for main or branch‑circuit protection in residential or light commercial panels. This 2‑pole, 120/240 V device is UL 489 listed and commonly used where a 150 A, 10 kA I.C. breaker is specified to protect feeders and distribution circuits in Siemens panels.