FD-frame Siemens molded case circuit breakers are rated up to 250A and 600VAC and interrupt excessive current flows to protect devices from electrical damage. They're used in enclosures, switchboards, and panelboards. Their current-carrying parts, mechanisms, and trip devices are contained in a molded case. Agency advantages supply the following brands: ①Allen-Bradley( Rockwell Automation)Series ②Square D(Schneider Electric) Series ③Eaton - Cutler Hammer (Westinghouse )Series ④SIEMENS PLC Series,Siemens CNC system ⑤Eaton moller Series