Siemens Q1515NC is a QT-type duplex (tandem) circuit breaker rated 15 A per pole for 120 V circuits, featuring a 10,000 A interrupting capacity and non-CTL construction. The unit contains two independent 1-pole circuits in a single housing, effectively providing two 15 A branch protections in one slot for Siemens QT panels that accept tandem breakers. Intended for residential wiring and light commercial use, it protects two 15 A circuits on a 120 V supply, aligning with the QT family’s duplex/tandem design. The designation Q1515NC denotes its two 15 A poles in a single device, making it a space-saving option when panel capacity is limited.
