The Siemens BAF Circuit Breaker is a panelboard mounted, non-interchangeable trip molded case arc fault circuit interrupter. This breaker is a combination type AFCI. 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.
