blocks and holders 145 w w w . l i t t e l f u s e . c o m blocks and holders ? 2005 littelfuse ? powr-gard ? products catalog in-line watertight fuseholders to load to source electrical tape littelfuse 600 volt in-line watertight fuse holders are the ideal answer for all high humidity and corrosive environments where fuses are required. available in both brea k away and non-brea k away, single and double pole versions, these fus e hol d ers allow maximum flexibility for any a p pl i c a tion. applications street, alley, and parking lot lighting security and perimeter lighting traffic signals outdoor illuminated signs sports lighting boat electrical circuits tractors and yard equipment general outdoor circuit protection benefits ? safety permits individual fixture or device to be di s co n nec t ed from circuit for servicing. eliminates possibility of shock. ? individual fixture fusing prevents loss of one fixture through accident, vandalism, or end of life from darkening the entire circuit. ? simplifies maintenance being able to immediately identify the one faulted fixture eliminates testing the entire circuit, speeds repair, and allows the individual unit to be serviced while the rest of the circuit is functioning. ? reduces damage from fault can prevent faulted ballast or other failure from severely damaging fixture or device, reducing necessary repair or need of replacement. features ? watertight internal o-ring provides watertight seal. ? superior terminal seals ultrasonically-welded terminals provide maximum strength and eliminate leaking at terminals. ? break resistant fiberglass reinforced polymer body resists damage from dropping or impact much better than phenolic look-alikes. ? flexible terminations accommodates a wide range of stranded or solid copper or aluminum conductors. te r m i n a tions are available for one or two conductors, with either crimp or screw terminals. ? one-pole and two-pole models available to a c co m m o date all system voltages up to 600v. specifications voltage rating: 600 volts ampere rating: 30 amperes 200,000 amperes rms symmetrical (with class cc fuses) approvals: leb/ lex series: ul recognized miscellaneous fuseholder per ul 512 (file no. e14721) csa certified per c22.2, no. 39 (file no. lr7316) lec/ ley series: ul listed class cc branch circuit fuseholder per ul 512 (file no. e14721) csa certified per c22.2, no. 39 (file no. lr7316) mating fuses leb/lex series: accepts all 1 1 ? 2 x 13 ? 32 midget and class cc fuses littelfuse types blf, bln, flm, flq, klk, klkd, klkr, kldr and ccmr. lec/ley series: accepts only class cc fuses. littelfuse types klkr, kldr and ccmr.
blocks and holders 146 w w w . l i t t e l f u s e . c o m blocks and holders ? 2005 littelfuse ? powr-gard ? products catalog one-pole leb and lec fuseholders basic single-pole leb and lec watertight fuseholders provide protection for a variety of circuits. leb fuseholders a c cept all 13 / 32 x 1 1 / 2 midget fuses providing su p pl e me n tal overcurrent protection. lec fuseholders are ul listed class cc fuseholders which accept only class cc fuses and meet national electrical code requirements for branch circuit protection. the most common use for either fuseholder is for protection of lighting circuits. however, consider them wherever there is a need for secure in-line protection, from boat circuits to electric wheelchairs. great flexibility is achieved when the basic holders are combined with breakaway receptacles, y-terminals and insulating boots. two-pole lex and ley fuseholders lex and ley fuseholders are intended for use on line-to-line circuits up to 600 volts and are ideal for line-to-line loads such as 240 or 480 volt ballasts. when the line and load sections of lex and ley fuseholders are separated, or when the fuseholder is removed from a two-pole breakaway receptacle, both lines are disconnected simultaneously. this prevents the possibility of shock from backfeeding through an exposed fuse, which could happen with single-pole fuseholders. the lex holder is a two-pole version of the leb and accepts midget fuses, providing supplementary overcurrent protection. the ley holder is a two-pole version of the lec, which accepts only class cc fuses, and may be used to provide branch circuit protection. both fuseholders may be equipped with y-terminals, breakaway receptacles and insulating boots. one-pole let solid neutral disconnects the let solid neutral disconnect is designed for use as a no-load non-fused disconnect. similar in design to the leb series fuseholders, the let is easily identified by its all white body. internally, it has a permanently installed solid tin-plated copper neutral slug which eliminates the possibility of placing a fuse in the neutral side of the circuit. fusing the neutral side causes a safety hazard and also violates the national electrical code. the let is available in both breakaway and non-breakaway configurations with a wide variety of te r m i n a tions. breakaway feature littelfuse leb, lec, and let single-pole fuseholders and lex and ley two-pole fuseholders are available with an optional breakaway feature required to meet state and federal highway commission standards requiring fuseholders to readily disconnect from the line in case of a pole knockdown. the breakaway feature consists of a receptacle permanently attached to the power line and a fuseholder with matching terminals. when knockdown occurs, the parts separate readily. the breakaway receptacle terminal is deeply recessed so that energized parts are not exposed. the fuse remains safely enclosed inside the now de-energized wate r tight fuseholder. after the pole has been reinstalled, the fuseholder is easily plugged into the receptacle, i m m e d i at e ly restoring service. the breakaway feature may also be used in marinas, travel trailer parks and other locations where circuits subjected to strain must be safely di s co n nec t ed. in-line watertight fuseholders leb/lec lex/ley let breakaway
blocks and holders 147 w w w . l i t t e l f u s e . c o m blocks and holders ? 2005 littelfuse ? powr-gard ? products catalog in-line watertight fuseholders insulating boots molded from engineering grade the r m o pla s tics, the wpb1 and wpb2 provide a high resistance to cor - r o sive e n v i ro n ments and deliver a watertight seal. boots are supplied as standard with all breakaway versions. weat h e r proof boots wpb1 and wpb2 can be pu r chased separately for all non-breakaway holders. part number wpb1 contains one standard boot for use with a, b, c, d, or j te r m i n a tion. part number wpb2 contains one y-pole boot for use with the y-pole termination. for watertight protection of non-breakaway y-pole fuseholders, order one wpb1 and one wpb2 boot. for non-breakaway double-pole lex and ley holders with a, b, c, d, or j terminations, order four wpb1 boots. these insulating boots are designed to fit snugly onto wire insulation, but for best results with varying wir e insulation sizes, a tape wrap should be completed. a & b crimp terminal c & d crimp terminal j terminal y terminal 4.5" 10.3" ( assembled length ) 5.4" ( assembled length ) 4.5" 9.3" ( assembled length ) wpb1 boot (optional) wpb1 boot (optional) insulating boot (standard) insulating boot (standard) 4.2" 4.5" 9.3" ( assembled length ) 10.3" ( assembled length ) 5.3" ( assembled length ) terminal size t&b part no. burndy part no. a wt161m C b wt161m mr4c c wt115a hypress y34a d wt115a hypress y34a recommended crimping tools the following crimping tools or equivalents may be used on either the non-breakaway or breakaway watertight in-line fuseholders. ordering information to order littelfuse in-line fuseholders and disconnects by part number, refer to the charts on the next page. leb - aa - s type load side/term size breakaway feature line side/term size fuseholder type description leb one-pole in-line fuseholder for midget and class cc fuses lec one-pole in-line fuseholder for class cc fuses let one-pole in-line solid neutral disconnect lex two-pole in-line fuseholder for midget and class cc fuses ley two-pole in-line fuseholder for class cc fuses
blocks and holders 148 w w w . l i t t e l f u s e . c o m blocks and holders ? 2005 littelfuse ? powr-gard ? products catalog in-line watertight fuseholders selection guide for single pole leb/ lec fus e hol d ers standard part no. breakaway part no. fuse type load terminal selection line terminal selection terminal type load terminal wire size range no. of wires per terminal solid wire stranded wire terminal type line terminal wire size range no. of wires per terminal solid wire stranded wire leb-aa lec-aa leb-aa-s lec-aa-s midget class cc copper crimp #12 to #8 1 x x copper crimp #12 to #8 1 x x #12 2 x x #12 2 x x leb-ab lec-ab leb-ab-s lec-ab-s midget class cc copper crimp #12 to #8 1 x x copper crimp #10 2 x x #12 2 x x #6 1 x x #4 1 x leb-ac lec-ac midget class cc copper crimp #12 to #8 1 x x copper crimp #8 2 x x #12 2 x x #4 1 x leb-ad lec-ad midget class cc copper crimp #12 to #8 1 x x copper crimp #6 2 x x #12 2 x x #2 1 x leb-aj lec-aj leb-aj-s lec-aj-s midget class cc copper crimp #12 to #8 1 x x copper set-screw #12 to #8 1 x #12 2 x x #10 to #2 1 x leb-ayc lec-ayc leb-ayc-s lec-ayc-s midget class cc copper crimp #12 to #8 1 x x y type copper set-screw #12 to #8 1 x #12 2 x x #10 to #2 1 x leb-ba lec-ba leb-ba-s lec-ba-s midget class cc copper crimp #10 2 x x copper crimp #12 to #8 1 x x #6 1 x x #12 2 x x #4 1 x leb-bb lec-bb leb-bb-s lec-bb-s midget class cc copper crimp #10 2 x x copper crimp #10 2 x x #6 1 x x #6 1 x x #4 1 x #4 1 x leb-bc lec-bc midget class cc copper crimp #10 2 x x copper crimp #8 2 x x #6 1 x x #4 1 x #4 1 x leb-bd lec-bd midget class cc copper crimp #10 2 x x copper crimp #6 2 x x #6 1 x x #2 1 x #4 1 x leb-bj lec-bj leb-bj-s lec-bj-s midget class cc copper crimp #10 2 x x copper set-screw #12 to #8 1 x #6 1 x x #10 to #2 1 x #4 1 x leb-byc lec-byc leb-byc-s lec-byc-s midget class cc copper crimp #10 2 x x y type copper set-screw #12 to #8 1 x #6 1 x x #10 to #2 1 x #4 1 x leb-ca lec-ca midget class cc copper crimp #8 2 x x copper crimp #12 to #8 1 x x #4 1 x #12 2 x x leb-cb lec-cb midget class cc copper crimp #8 2 x x copper crimp #10 2 x x #4 1 x #6 1 x x #4 1 x leb-cc lec-cc midget class cc copper crimp #8 2 x x copper crimp #8 2 x x #4 1 x #4 1 x leb-cd lec-cd midget class cc copper crimp #8 2 x x copper crimp #6 2 x x #4 1 x #2 1 x leb-cj lec-cj midget class cc copper crimp #8 2 x x copper set-screw #12 to #8 1 x x #4 1 x #10 to #2 1 x leb-cyc lec-cyc midget class cc copper crimp #8 2 x x y type copper set-screw #12 to #8 1 x #4 1 x #10 to #2 1 x leb-da lec-da midget class cc copper crimp #6 2 x x copper crimp #12 to #8 1 x #2 1 x #12 2 x x leb-db lec-db midget class cc copper crimp #6 2 x x copper crimp #10 2 x x #2 1 x #6 1 x x #4 1 x leb-dc lec-dc midget class cc copper crimp #6 2 x x copper crimp #8 2 x x #2 1 x #4 1 x leb-dd lec-dd midget class cc copper crimp #6 2 x x copper crimp #6 2 x x #2 1 x #2 1 x leb-dj lec-dj midget class cc copper crimp #6 2 x x copper set-screw #12 to #8 2 x x #2 1 x #10 to #2 1 x leb-dyc lec-dyc midget class cc copper crimp #6 2 x x y type copper set-screw #12 to #8 1 x #2 1 x #10 to #2 1 x leb-jj lec-jj leb-jj-s lec-jj-s midget class cc copper set screw #12 to #8 1 x copper set-screw #12 to #8 1 x #10 to #2 1 x #10 to #2 1 x leb-jyc lec-jyc leb-jyc-s lec-jyc-s midget class cc copper set screw #12 to #8 1 x y type copper set-screw #12 to #8 1 x #10 to #2 1 x #10 to #2 1 x
blocks and holders 149 w w w . l i t t e l f u s e . c o m blocks and holders ? 2005 littelfuse ? powr-gard ? products catalog standard part no. breakaway part no. fuse type load terminal selection line terminal selection terminal type load terminal wire size range no. of wires per terminal solid wire stranded wire terminal type line terminal wire size range no. of wires per terminal solid wire stranded wire lex-aa ley-aa lex-aa-s ley-aa-s midget class cc copper crimp #12 to #8 1 x x copper crimp #12 to #8 1 x x #12 2 x x #12 2 x x lex-ab ley-ab lex-ab-s ley-ab-s midget class cc copper crimp #12 to #8 1 x x copper crimp #10 2 x x #12 2 x x #6 1 x x #4 1 x lex-ac ley-ac midget class cc copper crimp #12 to #8 1 x x copper crimp #8 2 x x #12 2 x x #4 1 x lex-ad ley-ad midget class cc copper crimp #12 to #8 1 x x copper crimp #6 2 x x #12 2 x x #2 1 x lex-ayc ley-ayc lex-ayc-s ley-ayc-s midget class cc copper crimp #12 to #8 1 x x y type copper set-screw #12 to #8 1 x #12 2 x x #10 to #2 1 x lex-ba ley-ba lex-ba-s ley-ba-s midget class cc copper crimp #10 2 x x copper crimp #12 to #8 1 x x #6 1 x x #12 2 x x #4 1 x lex-bb ley-bb lex-bb-s ley-bb-s midget class cc copper crimp #10 2 x x copper crimp #10 2 x x #6 1 x x #6 1 x x #4 1 x #4 1 x lex-bc ley-bc midget class cc copper crimp #10 2 x x copper crimp #8 2 x x #6 1 x x #4 1 x #4 1 x lex-bd ley-bd midget class cc copper crimp #10 2 x x copper crimp #6 2 x x #6 1 x x #2 1 x #4 1 x lex-byc ley-byc lex-byc-s ley-byc-s midget class cc copper crimp #10 2 x x y type copper set-screw #12 to #8 1 x #6 1 x x #10 to #2 1 x #4 1 x lex-ca ley-ca midget class cc copper crimp #8 2 x x copper crimp #12 to #8 1 x x #4 1 x #12 2 x x lex-cb ley-cb midget class cc copper crimp #8 2 x x copper crimp #10 2 x x #4 1 x #6 1 x x #4 1 x lex-cc ley-cc midget class cc copper crimp #8 2 x x copper crimp #8 2 x x #4 1 x #4 1 x lex-cd ley-cd midget class cc copper crimp #8 2 x x copper crimp #6 2 x x #4 1 x #2 1 x lex-cj ley-cj midget class cc copper crimp #8 2 x x copper set-screw #12 to #8 1 x #4 1 x #10 to #2 1 x lex-cyc ley-cyc midget class cc copper crimp #8 2 x x y type copper set-screw #12 to #8 1 x #4 1 x #10 to #2 1 x lex-da ley-da midget class cc copper crimp #6 2 x x copper crimp #12 to #8 1 x x #2 1 x 12 2 x x lex-db ley-db midget class cc copper crimp #6 2 x x copper crimp #10 2 x x #2 1 x #6 1 x x #4 1 x lex-dc ley-dc midget class cc copper crimp #6 2 x x copper crimp #8 2 x x #2 1 x #4 1 x lex-dd ley-dd midget class cc copper crimp #6 2 x x copper crimp #6 2 x x #2 1 x #2 1 x lex-dj ley-dj midget class cc copper crimp #6 2 x x copper set-screw #12 to #8 1 x #2 1 x #10 to #2 1 x lex-dyc leydyc midget class cc copper crimp #6 2 x x y type copper set-screw #12 to #8 1 x #2 1 x #10 to #2 1 x lex-jj ley-jj lex-jj-s ley-jj-s midget class cc copper set-screw #12 to #8 1 x copper set-screw #12 to #8 1 x #10 to #2 1 x 1 x in-line watertight fuseholders selection guide for double pole lex/ ley fus e hol d ers
blocks and holders 150 w w w . l i t t e l f u s e . c o m blocks and holders ? 2005 littelfuse ? powr-gard ? products catalog in-line watertight fuseholders selection guide for solid neutral let fus e hol d ers standard part no. breakaway part no. fuse type load terminal selection line terminal selection terminal type load terminal wire size range no. of wires per terminal solid wire stranded wire terminal type line terminal wire size range no. of wires per terminal solid wire stranded wire let-aa let-aa-s solid neutral copper crimp #12 to #8 1 x x copper crimp #12 to #8 1 x x #12 2 x x #12 2 x x let-ab let-ab-s solid neutral copper crimp #12 to #8 1 x x copper crimp #10 2 x x #12 2 x x #6 1 x x #4 1 x let-ayc let-ayc-s solid neutral copper crimp #12 to #8 1 x x y type copper set-screw #12 to #8 1 x #12 2 x x #10 to #2 1 x let-ba let-ba-s solid neutral copper crimp #10 2 x x copper crimp #12 to #8 1 x x #6 1 x x #12 2 x x #4 1 x let-bb let-bb-s solid neutral copper crimp #10 2 x x copper crimp #10 2 x x #6 1 x x #6 1 x x #4 1 x #4 1 x let-byc let-byc-s solid neutral copper crimp #10 2 x x y type copper set-screw #12 to #8 1 x #6 1 x x #10 to #2 1 x #4 1 x let-jj let-jj-s solid neutral copper set-screw #12 to #8 1 x copper set-screw #12 to #8 1 x #10 to #2 1 x #10 to #2 1 x let-jyc let-jyc-s solid neutral copper set-screw #12 to #8 1 x y type copper set-screw #12 to #8 1 x #10 to #2 1 x #10 to #2 1 x terminal selection guide terminal designation terminal description number of wires per terminal wire range wire type a copper crimp 1 2 #12-#8 #12 solid/stranded solid/stranded b copper crimp 2 1 1 #10 #6 #4 solid/stranded solid/stranded stranded c copper crimp 2 1 #8 #4 solid/stranded stranded d copper crimp 2 1 #6 #2 solid/stranded stranded j copper set screw 1 2 #12-#8 #10-#2 solid stranded y (2 terminals) y style copper set screw 1 1 #12-#8 #10-#2 solid stranded
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