Siemens panelboard mounting circuit breakers are designed for quick installation in Siemens panelboards and switchboards. The interlocking features allow for one screw installation which mounts the breaker line end bus tab to the panel board busbar. Ideally suited for use in lighting panels, these breakers offer HACR ratings as well as switching duty ratings for 15 to 20 A and HID ratings from 15 to 50 A.