12-21-98 sb98107 rev. a r-rated fuses jck, jck-a, for motor circuit protection jcl, & jcl-a medium voltage form no. jck & jcl page 1 of 3 bif doc #6001 bussmann catalog symbol: jck, jck-a, jcl, jcl-a r-rated medium voltage current limiting 2750v ac ?jck, jck-a 5500v ac ?jcl, jcl-a max. design voltage 2750v ac ?jck, jck-a u.l. recognized maximum 2540v ac ?jck, jck-a max. design voltage 5500v ac ?jcl, jcl-a u.l. recognized maximum 5080v ac ?jcl, jcl-a u.l. recognized (guide #m5552, file # e96676) the jck-a and jcl-a are standard jck and jcl product with an additional westinghouse amp guard hookeye. this single hookeye is on one end of the fuse and aids in the insertion and removal of the fuse. r-rated medium voltage fuses are back-up current limiting fuses used in conjunction with medium voltage motors and motor controllers. current limiting fuses may be designated as r-rated if they meet the following requirements: 1. the fuse will safely interrupt all currents between its mini- mum and maximum interrupting ratings. 2. the fuse will melt in a range of 15 to 35 seconds at a value of 100 times the ? number (ansi c37.46). bussmann r-rated current limiting fuses are designed for use with medium voltage starters to provide short-circuit pro- tection for the motor and motor controller. these fuses offer a high level of fault current interruption in a self-contained, non-venting package which can be mounted indoors or in an enclosure. blown fuse indication on all fuses.
12-21-98 sb98107 rev. a r-rated fuses jck, jck-a, for motor circuit protection jcl, & jcl-a medium voltage bussmann specifications buss maximum dimensions (inches) max. int. cap. min. int. cap. catalog no. amperage design voltage a b c construction amps (asym.) amps (sym.) amps (sym.) 2400v; r-rated; indoor/enclosure jck-2r 70 2r 2750v 11.24 3.0 3.0 single 80,000 50,000 165 jck-3r 100 3r 2750v 11.24 3.0 3.0 single 80,000 50,000 220 jck-4r 130 4r 2750v 11.24 3.0 3.0 single 80,000 50,000 320 jck-5r 150 5r 2750v 11.24 3.0 3.0 single 80,000 50,000 410 jck-6r 170 6r 2750v 11.24 3.0 3.0 single 80,000 50,000 480 jck-9r 200 9r 2750v 11.24 3.0 3.0 single 80,000 50,000 720 jck-12r 230 12r 2750v 11.24 3.0 3.0 single 80,000 50,000 970 jck-18r 390 18r 2750v 11.24 3.0 3.0 double 80,000 50,000 1430 jck-24r 450 24r 2750v 11.24 3.0 3.0 double 80,000 50,000 1880 2400v; r-rated; indoor/enclosure; with westinghouse amp guard hookeye jck-a-2r 70 2r 2750v 11.24 3.0 3.0 single 80,000 50,000 165 jck-a-3r 100 3r 2750v 11.24 3.0 3.0 single 80,000 50,000 220 jck-a-4r 130 4r 2750v 11.24 3.0 3.0 single 80,000 50,000 320 jck-a-5r 150 5r 2750v 11.24 3.0 3.0 single 80,000 50,000 410 jck-a-6r 170 6r 2750v 11.24 3.0 3.0 single 80,000 50,000 480 jck-a-9r 200 9r 2750v 11.24 3.0 3.0 single 80,000 50,000 720 jck-a-12r 230 12r 2750v 11.24 3.0 3.0 single 80,000 50,000 970 jck-a-18r 390 18r 2750v 11.24 3.0 3.0 double 80,000 50,000 1430 jck-a-24r 450 24r 2750v 11.24 3.0 3.0 double 80,000 50,000 1880 4800v; r-rated; indoor/enclosure jcl-2r 70 2r 5500v 15.76 3.0 3.0 single 80,000 50,000 165 jcl-3r 100 3r 5500v 15.76 3.0 3.0 single 80,000 50,000 220 jcl-4r 130 4r 5500v 15.76 3.0 3.0 single 80,000 50,000 320 jcl-5r 150 5r 5500v 15.76 3.0 3.0 single 80,000 50,000 410 jcl-6r 170 6r 5500v 15.76 3.0 3.0 single 80,000 50,000 480 JCL-9R 200 9r 5500v 15.76 3.0 3.0 single 80,000 50,000 720 jcl-12r 230 12r 5500v 15.76 3.0 3.0 single 80,000 50,000 970 jcl-18r 390 18r 5500v 15.76 3.0 3.0 double 80,000 50,000 1430 jcl-24r 450 24r 5500v 15.76 3.0 3.0 double 80,000 50,000 1880 4800v; r-rated; indoor/enclosure; with westinghouse amp guard hookeye jcl-a-2r 70 2r 5500v 15.76 3.0 3.0 single 80,000 50,000 165 jcl-a-3r 100 3r 5500v 15.76 3.0 3.0 single 80,000 50,000 220 jcl-a-4r 130 4r 5500v 15.76 3.0 3.0 single 80,000 50,000 320 jcl-a-5r 150 5r 5500v 15.76 3.0 3.0 single 80,000 50,000 410 jcl-a-6r 170 6r 5500v 15.76 3.0 3.0 single 80,000 50,000 480 jcl-a-9r 200 9r 5500v 15.76 3.0 3.0 single 80,000 50,000 720 jcl-a-12r 230 12r 5500v 15.76 3.0 3.0 single 80,000 50,000 970 jcl-a-18r 390 18r 5500v 15.76 3.0 3.0 double 80,000 50,000 1430 jcl-a-24r 450 24r 5500v 15.76 3.0 3.0 double 80,000 50,000 1880 0.38" (9.5mm) b indicator showing fuse is open indicator showing fuse is open a c dimensional data form no. jck & jcl page 2 of 3 bif doc #6001
r-rated fuses jck, jck-a, for motor circuit protection jcl, & jcl-a medium voltage form no. jck & jcl page 3 of 3 bif doc #6001 bussmann 12-21-98 sb98107 rev. a current in amperes time in seconds 20 100 1,000 10,000 20,000 300 100 10 1 .1 .01 2 3 ampere rating 4 6 9 12 18 24 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. current limitation curves time-current characteristic curves?verage melt instantaneous peak let thru current amperes prospective short circuit current asymmetrical rms amperes 3 24 18 12 9 6 4 2 b a r rating 400,000 100,000 10,000 1,000 1,000 10,000 80,000 200,000 jck jcl
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