Siemens Q22050CT U is a QT-series four-pole molded‑case circuit breaker rated for 120/240 V AC and 50 A, designed for use in panels that accept quadplex breakers from the Siemens QT family. It provides thermal‑magnetic protection with a 10 kA interrupting rating at 240 V, delivering reliable short‑circuit protection for multi‑wire branch circuits. With four poles in a quad configuration, it protects two hot legs plus two neutrals or serves as a four‑circuit protection unit in compatible load centers, and the Q22050CTU designation identifies this quadplex, 50 A, 120/240 V model within Siemens’ QT line.
