for product data sheets, visit www .cooperb ussmann.com/pr oducts/da tasheet.asp 16 low voltage, branch circuit rated fuses 16 typical applications ? large distribution switchboards ? power panelboards ? motor control centers ? machinery disconnect switches lpn catalog numbers (amps) (250vac/125vdc) lpn-rk- 1 ? 10 sp lpn-rk-3 1 ? 2 sp lpn-rk-60sp** lpn-rk- 15 ? 100 sp lpn-rk-4sp lpn-rk-70sp**** lpn-rk- 2 ? 10 sp lpn-rk-4 1 ? 2 sp lpn-rk-80sp** lpn-rk- 3 ? 10 sp lpn-rk-5sp lpn-rk-90sp** lpn-rk- 4 ? 10 sp lpn-rk-5 6 ? 10 sp lpn-rk-100sp** lpn-rk- 1 ? 2 sp lpn-rk-6sp lpn-rk-110sp** lpn-rk- 6 ? 10 sp lpn-rk-6 1 ? 4 sp lpn-rk-125sp** lpn-rk- 8 ? 10 sp lpn-rk-8sp lpn-rk-150sp** lpn-rk-1sp lpn-rk-9sp lpn-rk-175sp** lpn-rk-1 1 ? 8 sp lpn-rk-10sp lpn-rk-200sp** lpn-rk-1 1 ? 4 sp lpn-rk-12sp lpn-rk-225sp** lpn-rk-1 4 ? 10 sp lpn-rk-15sp lpn-rk-250sp** lpn-rk-1 6 ? 10 sp lpn-rk-17 1 ? 2 sp lpn-rk-300sp** lpn-rk-1 8 ? 10 sp lpn-rk-20sp lpn-rk-350sp** lpn-rk-2sp lpn-rk-25sp lpn-rk-400sp** lpn-rk-2 1 ? 4 sp lpn-rk-30sp lpn-rk-450sp** lpn-rk-2 1 ? 2 sp lpn-rk-35sp** lpn-rk-500sp** lpn-rk-2 8 ? 10 sp lpn-rk-40sp** lpn-rk-600sp** lpn-rk-3sp lpn-rk-45sp** lpn-rk-3 2 ? 10 sp lpn-rk-50sp** *meets all performance requirements of ul standard 248-12 for class rk1 fuses. **available with optional permanent indication. to order, place i at end of catalog number. example: lpn-rk-35spi. 0-60a fuses available with nickel plate option. (ex: lps-rk30spnp) 70-600a fuses available with tin plate option. example: lps-rk-100sp-tp. lps catalog numbers - (amps) (600vac/300vdc) lps-rk- 1 10 sp lps-rk-2 1 2 sp lps-rk-12sp** lps-rk-110sp** lps-rk- 2 10 sp lps-rk-2 8 10 sp lps-rk-15sp** lps-rk-125sp** lps-rk- 3 10 sp lps-rk-3sp lps-rk-17 1 2 sp** lps-rk-150sp** lps-rk- 4 10 sp lps-rk-3 2 10 sp lps-rk-20sp** lps-rk-175sp** lps-rk- 1 2 sp lps-rk-3 1 2 sp lps-rk-25sp** lps-rk-200sp** lps-rk- 6 10 sp lps-rk-4sp lps-rk-30sp** lps-rk-225sp** lps-rk- 8 10 sp lps-rk-4 1 2 sp lps-rk-35sp** lps-rk-250sp** lps-rk-1sp lps-rk-5sp lps-rk-40sp** lps-rk-300sp** lps-rk-1 1 8 sp lps-rk-5 6 10 sp lps-rk-45sp** lps-rk-350sp** lps-rk-1 1 4 sp lps-rk-6sp** lps-rk-50sp** lps-rk-400sp** lps-rk-1 4 10 sp lps-rk-6 1 4 sp** lps-rk-60sp** lps-rk-450sp** lps-rk-1 1 2 sp lps-rk-7sp** lps-rk-70sp** lps-rk-500sp** lps-rk-1 6 10 sp lps-rk-8sp** lps-rk-80sp** lps-rk-600sp** lps-rk-1 8 10 sp lps-rk-9sp** lps-rk-90sp** lps-rk-2 1 4 sp lps-rk-10sp** lps-rk-100sp** *meets all performance requirements of ul standard 248-12 for class rk1 fuses. **available with optional permanent replace fuse indication. to order, place i at end of catalog number. example: lps-rk-15spi. low-peak dual-element, time-delay fuses lpn-rk_sp (250v) class rk1 lps-rk_sp (600v) class rk1 now available with optional indication specifications description: current-limiting, dual-element, time-delay fuse; 10 seconds (minimum) at 500% rated amps (8 seconds for 0-30a sizes). now available with optional permanent indication on select ratings (see catalog numbers table). dimensions: see page 11 for class rk1 dimensions. construction: copper fuse element. ratings: volts lpn-rk: 250vac (or less) 125vdc (0-60a) 250vdc (70-600a) lps-rk: 600vac (or less) 300vdc amps 1 ? 10 -600a ir 300,000a rms sym. 100,000a dc agency information: ce, ul listed C special purpose*, guide jfhr, file e56412, csa certified (200,000 air), class rk1 per csa c22.2, no. 248.12, class 1422-02, file 53787. features and benefits ? separate overload and short-circuit elements provide time delay for close sizing of high inrush loads linked with k1 current-limitation and selective coordination ratio of 2:1 (within low-peak fuse family) prevents widespread blackouts. ? inventory consolidation of class rk1, rk5 and h fuses for reduced sku investment and minimizing potential for misapplying fuse. ? 300,000a rms symmetrical interrupting rating provides adequate ratings without obsolescence for all electrical systems, big or small. ? insulated end caps reduces exposure to live parts and extends air gap to distance between blades of adjacent mounted fuses or to housing. data sheets: lpn-rk ?1003 (0-60) and 1004 (70-600) lpn-rk with indication ?1066 (70-600) lps-rk ?1001 (0-60) and 1002 (70-600) lps-rk with indication ?1061 (0-60) and 1064 (70-600) recommended fuse holders & blocks for class rk1 600v & 250vfuses ? see page 9
for product data sheets, visit www .cooperb ussmann.com/pr oducts/da tasheet.asp 17 low voltage, branch circuit rated fuses low voltage branch circuit fuses 17 low-peak dual-element, time-delay fuses time-current characteristic curves?verage melt time in seconds current in amperes ampere rating 300 100 10 1 .1 .01 20 100 1,000 10,000 15 20 30 60 100 200 400 600 lpn-rk 250v time in seconds current in amperes ampere rating 300 100 10 1 .1 .01 20 100 1,000 10,000 20 30 60 100 200 400 600 lps-rk 600v 1 2 4 5 8 10 12 ampere rating 300 100 10 1 .1 .01 .1 1 10 100 1,000 time in seconds rms symmetrical current in amperes 1 / 10 15 / 100 2 / 10 3 / 10 4 / 10 1 / 2 6 / 10 8 / 10 1 1 / 4 1 6 / 10 2 1 / 2 3 2 / 10 6 1 / 4 lpn-rk 250v 1 / 10 15 / 100 2 / 10 4 / 10 6 / 10 1 6 / 10 8 / 10 1 2 4 5 8 12 10 1 1 / 4 2 1 / 2 3 2 / 10 6 1 / 4 1 / 2 3 / 10 lps-rk 600v time in seconds current in amperes ampere rating data sheets: lpn-rk ?1003 (0-60) and 1004 (70-600) data sheets: lps-rk ?1001 (0-60) and 1002 (70-600) recommended fuse holders & blocks for class rk1 600v & 250vfuses ? see page 9
for product data sheets, visit www .cooperb ussmann.com/pr oducts/da tasheet.asp 18 low voltage, branch circuit rated fuses a b 600 400 200 100 ampere rating 400,000 100,000 10,000 1,000 1,000 10,000 100,000 200,000 rms symmetrical currents in amperes aCb=asymmetrical available peak (2.3 x symm rms amps) instantaneous peak let-thru current in amps 60 30 current limitation curves?pn-rk (250v) b instantaneous peak let-thru current in amps current limitation curves?ps-rk (600v) data sheets: lpn-rk ?1003 (0-60) and 1004 (70-600) data sheets: lps-rk ?1001 (0-60) and 1002 (70-600) recommended fuse holders & blocks for class rk1 600v & 250vfuses ? see page 9 low-peak dual-element, time-delay fuses manhattan s biggest building project protected by cooper bussmann low-peak fuses new york citys landmark aol time warner center is protected by a vast array of cooper bussmann products. the $1.7 billion, twin-towered, glass-walled complex rises 750 feet and measures 2.8 million square feet. the elec- trical circuit protection system has 25 switchboards (1200a - 4000a) all containing fusible switches, 500 panel- boards (100a C 1600a), 75 plug-in busway switches (100a C 600a), and more than 1900 cooper bussmann class j low-peak? fuses. cooper bussmann lpj fuses were used because of the superior series-ratings available using class j fuses with downstream circuit breaker panels. fuses were selected by the consulting engineer for all switchboards, power panels and busway switches because of the high available short circuit currents and the need for selective coordination of overcurrent protective devices (a requirement of the new york city electrical code) so the electrical system does not have a blackouts. did you know?
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