Sold as 2 UNITS at $19.75 per unit. (1 unit = each.) 3/4". 20/20 amp, 120/240 vac. 2-single pole. Non-interchangeable. 10,000 AIR. Visi-Trip indicator. Circuit limiting. Allows two circuits from one space in the load center. Plug-in. Fits Q.O. panels. Standard overload and short circuit protection in Q.O. load centers. For CTL (circuit limiting) load centers with bus bar slots. Tandem breakers offer two circuit protection while only requiring one space in a load center. UL listed. C.S.A. approved. Bulk. Manufacturer number: QOTI/I/CP. SKU #: 30644. Country of origin: Mexico. Distributed by Square D.