Siemens 15/50 Amp Standard 3-Pole Circuit Breakers (tandem/quadplex model) combine two 15A single-pole and one 50A double-pole in a 2-inch housing for space-saving thermal-magnetic protection at 10kAIC in Siemens load centers. These plug-in breakers with lugs support #14-4 AWG Cu/Al wire for mixed 120/240V loads like appliances or subfeeds, featuring common trip per UL standards to avoid warranty issues from non-Siemens breakers. | Siemens | | 15/50 amps Standard 3-Pole Circuit Breaker | Best Buy