Siemens circuit breakers are designed for use with power distribution systems to open a circuit under short-circuit or overload conditions. These UL-listed breakers feature a thermal-magnetic trip for providing long-time and instantaneous current limiting protection. The molded case of these devices holds the current-carrying components, trip devices and mechanisms integrated into a confined space. They further come with a bolt-on mounting design for easy installation in panels or switchboards in both horizontal and vertical directions. Choose from a wide range of these HJD / HJXD Series circuit breakers available in a maximum current rating of 125A on Raptor Supplies.