Siemens Q3015 Circuit Breaker

Siemens Q3015 QT-type tandem circuit breaker provides two circuits in a single 1‑pole slot, delivering a 30A and a 15A branch in one compact unit. Rated for 120/240V AC with a 10,000‑ampere interrupting capacity (AIC), this plug‑in, molded‑case breaker is designed for use in compatible Siemens Q‑Line panels that accept QT tandem breakers. The Q3015 is a 1P tandem device that enables efficient circuit distribution in residential or light commercial load centers where space is limited, offering two independently protected circuits in one physical position. Catalog number Q3015 places it within Siemens’ QT family, making it a common replacement in existing Siemens installations where tandem breakers are permitted by the panel labeling. Common applications include adding extra branch circuits such as lighting, receptacles, or small appliances in panels that need to maximize capacity without sacrificing space.