12-21-98 sb98107 rev. a catalog symbol: lpt 35 to 60 amperes 600 volts ac (or less)* current limiting interrupting rating - 200,000a rms sym. u.l. listed class t (guide # jddz, file # e4273) csa hrci-t (class 1422-02, file # 53787) * self certified for 300v dc, 10ka interrupting rating. catalog symbols and ampere ratings LPT-35 lpt-40 lpt-45 lpt-50 lpt-60 carton quantity and weight-lpt time lag (600v ac) ampere carton weight** ratings qty lbs. kg. 35-60 10 0.82 0.371 **weight per carton. low-peak yellow time lag fuses lpt class t ?600 volts, 35-60 amps form no. lpt page 1 of 2 bif document:1031 bussmann 35?0a 1.56" (0.06mm) 1.00" (0.04mm) 0.81" (0.03mm) dimensional data standard t fuseblocks (600v) catalog data (reference bif document: 1116) amps poles screw no. box lug 35 1 t60060-1sr t60060-1cr to 2 t60060-2sr t60060-2cr 60 3 t60060-3sr t60060-3cr lpt low-peak yellow time lag fuse a superior all-purpose space saving branch circuit fuse that meets most protection requirements up to 60 amps. very compact, physical size is only .81?x 1.56?(20.6mm x 39.7mm) with 1.0?class t rejection feature. time lag to avoid unwanted fuse openings from surge cur- rents when sized appropriately per nec . for protection of motor circuits up to 15 horsepower at 460v, or 20 horsepower at 575v. fast response under short-circuit conditions for a high degree of current limitation. maximum interrupting rating of 200,000 amperes for use in today s large capacity systems.
12-21-98 sb98107 rev. a low-peak yellow time lag fuses lpt class t ?600 volts, 35-60 amps bussmann current limitation curves time-current characteristic curves?verage melt time in seconds current in amperes 10 100 1000 10,000 60,000 ampere rating 60 35 1 .1 .01 100 10 1,000 rms symmetrical currents in amperes a?=asymmetrical available peak (2.3 x symm rms amps) ampere rating 60 35 instantaneous peak let-thru current in amps 100 1,000 10,000 200,000 100,000 10,000 1,000 100 100,000 400,000 a b form no. lpt page 2 of 2 bif document: 1031 the only controlled copy of this bif document is the electronic read-only version located on the bussmann network drive. all ot her copies of this bif document are by definition uncontrolled. this bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applicatio ns. bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. bussmann also reserves the right to change or update, withou t notice, any technical information contained in this bulletin. once a product has been select- ed, it should be tested by the user in all possible applications. motor application per nec 430-52: lpt fuses may be sized at a maximum of 300% of motor f.l.a. (or next standard fuse size, if 300% does not correspond to a standard fuse size). for longer acceleration times, fuse sizing can be increased but shall not exceed 400%.
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