The Siemens type BQ Circuit Breaker is a cable in, cable out, non interchangeable trip molded case circuit breaker available in 10 125A, 1 , 2 , and 3 pole. Available in 10KAIC, 22KAIC and 65KAIC interrupting ratings. Siemens strongly recommends against the use of used breakers. The installation of used breakers in a Siemens panel will void the warranty on the panel. Siemens does not sell used breakers and has not approved any 3rd party sellers to do so.