Siemens Low Voltage Residential Circuit Breakers Miniature Thermal Mag Circuit Breakers - Type QP/MP, 2-Pole, 120/240VAC are Circuit Protection Load Center Mains, Feeders, and Miniature Circuit Breakers. Type MP-T Standard HACR Rated Voltage Rating 120/240 Amperage Rating 30 Interrupt Rating 10 Number Of Poles 2 Operating Temperature 40