Square D KAL Series circuit breakers are suitable for installation within switchboards, motor control centres, panelboards, enclosures and busway plug-in units for protecting connected circuits & equipment against short circuits & faulty currents. These feed-thru circuit breakers feature line & load side lug terminals for ease-of-wiring while eliminating loose connections and thermal magnetic trip for providing both instantaneous & long time trip functions that instantly react against severe short-circuits while avoiding tripping on mild overloads. These 2 / 3 pole molded case circuit breakers are available in amperage ratings ranging from 100 to 250A on Raptor Supplies.