The current-limiting attributes of PowerPact™ H-, J- and L-frame circuit breakers provide greater protection for downstream devices by limiting the let-through current in the event of a fault. The current-limiting capabilities of HJ/HL/HR, JJ/JL/JR and LJ/LL/LR frame circuit breakers are documented with underwriters laboratories and Canadian standards Association. These current limiting circuit breakers ship with a label that identifies them as UL/CSA current-limiting circuit Breakers.