Hartland Controls/Littelfuse HCB Molded Case Circuit Breakers are for use in residential and commercial applications. The unit-mounted (lug/lug) thermal-magnetic HCB circuit breakers are tested and listed according to UL Standard 489 and CSA Standard C22.2 No. 5-02 for molded case circuit breakers and enclosures. These circuit breakers feature a 10A to 60A and one-, two-, or three-pole reversible lug line/load connection.