Siemens Q22050CT2 QT-type 2-pole circuit breaker provides 50 A, 120/240 V AC overcurrent protection with a common-trip design for residential load centers. This plug-in unit features a thermal-magnetic trip, a 10 kA interrupt rating at 240 V, and a width of 1/2 inch per pole (1 inch total for the 2-pole device); it accepts copper or aluminum conductors from 8 AWG to 4 AWG. As part of the QT family, it is designed for Siemens load centers and protects high-current 240 V branch circuits in standard residential installations.
