Littelfuse JLLS060.TXP Cartridge Fuse. Littelfuse® POWR-GARD® Fast Acting Fuse Series: JLLS Non-Indicating 60 A 300 VAC/300 VDC 20/200 kA Interrupt Class: T Clip Terminal Holder Mounting Cartridge Body Melamine 0.994 in Dia x 1.562 in L Body. Additional Description: LTFS-JLLS060P (T) JLLS060.TXP 60 AMP SIZE. Catalog Description: FUS 600V F/A CLASS T 60A PLTD. Space-saving Class T fuses are the most compact fuses available in ratings above 30 amperes — less than one-third the size of comparable Class R fuses. When rated in accordance with the NEC Class T fuses provide fast-acting overload and short circuit protection for non-inductive circuits and equipment. Used in inductive circuits the ampere rating of Class T fuses must be increased to prevent opening on inrush currents. In such instances Class T fuses may provide only short circuit protection. For motor and general purpose circuits where space is not critical we recommend POWR-PRO™ JTD_ID Indicator series LLNRK/LLSRK series or FLSR_ID Indicator series. Applications: Protection of individual electric services and meters. Main switches containing Class T fuses may be used to provide compact protection for meter stacks. Molded case circuit breaker load centers and panelboards have increased interrupting ratings when “series rated” with Littelfuse Class T fus.