The J-frame Series C circuit breaker (Figure 1-1) types
JD, JDB, HJD, and JDC are 600 Vac maximum rated
devices with inter changeable thermal-magnetic trip
units rated 250A maximum continuous current. Circuit
breaker types JW, HJW, and JWC are 660 Vac maximum 

rated devices using interchangeable adjustable
thermal/adjustable magnetic or electronic trip units rated
up to 250A continuous current.

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