Littelfuse.com © 2013 Littelfuse POWR-GARD
®
Products
POWR-GARD
®
Fuse Datasheet
Rev: 070313
3 of 6
KLKD SERIES 10x38 FUSES
CATALOG
NUMBER
AMP
RATING
NOM COLD
RESISTANCE
(ohm)
AVERAGE
MELT TIME
AVERAGE
MELTING I
2
t
WATTS LOSS
AT 100% RATED
CURRENT (W)
WATTS LOSS
AT 80% RATED
CURRENT (W)
AVERAGE
CLEARING
TIME
TOTAL
CLEARING I
2
t
(A
2
s) 20 kA
TOTAL
CLEARING I
2
t
(A
2
s) 100 kA
KLKD
1
/10
1
/10 85.5 – – 0.780 0.505 0.000047 0.019 –
KLKD
1
/8
1
/8 65 – – 0.975 0.659 0.000050 0.010 –
KLKD
2
/10
2
/10 30.9 – – 1.213 0.773 0.000073 0.032 –
KLKD
1
/4
1
/4 22 – – 1.364 0.870 – – –
KLKD
3
/10
3
/10 16.2 – – 1.519 0.960 0.000101 0.067 –
KLKD ½
1
/2 8.16 – – 1.961 1.237 0.000141 0.197 –
KLKD
3
/4
3
/4 0.402 0.000063 0.234 0.361 0.199 0.000170 0.753 –
KLKD 1 1 0.252 0.000094 0.678 0.388 0.273 0.000247 1.827 0.008
KLKD 1
1
/2 1
1
/2 0.134 0.000153 2.890 0.409 0.229 0.000828 13.956 280
KLKD 2 2 0.124 0.000145 2.379 0.823 0.606 0.000291 3.919 0.012
KLKD 2
1
/2 2
1
/2 0.0989 0.000186 5.142 0.912 0.618 0.000387 8.877 –
KLKD 3 3 0.0773 0.000211 7.821 0.957 0.654 0.000449 14.835 –
KLKD 3
1
/2 3
1
/2 0.0613 0.000249 12.417 1.12 0.826 0.000471 21.048 –
KLKD 4 4 0.0511 0.000284 18.945 1.367 0.891 0.000507 30.76 0.019
KLKD 5 5 0.0363 0.000347 34.163 1.4 0.938 0.000607 56.514 0.024
KLKD 6 6 0.0261 0.000423 62.951 1.516 0.998 0.000735 96.824 0.035
KLKD 7 7 0.0205 0.000505 105.143 1.577 1.066 0.000898 168.578 0.087
KLKD 8 8 0.0194 0.000541 130.266 1.824 1.205 0.000945 210.595 0.656
KLKD 9 9 0.0166 0.000587 164.221 2.208 1.428 0.000992 266.633 –
KLKD 10 10 0.0128 0.000701 278.390 1.893 1.3 0.001200 454.628 211.667
KLKD 12 12 0.0103 0.000822 445.010 2.296 1.584 0.001455 744.775 440
KLKD 15 15 0.00782 0.000544 137.333 2.045 1.57 0.001721 351.24 –
KLKD 20 20 0.0045 0.000826 462.056 2.133 1.593 0.006144 1151.185 2120
KLKD 25 25 0.003532 0.001007 834.529 2.55 1.933 0.002085 1744.033 2085
KLKD 30 30 0.002776 0.001207 1409 3.701 1.983 0.002266 2757 3220
Note: Test Circuit 600 VDC / 20 kA
Electrical Specifications
SHORT CIRCUIT
CURRENT*
APPARENT RMS SYMMETRICAL CURRENT
FOR VARIOUS FUSE RATINGS
1
1
/2 A 12 A 25 A 30 A
5,000
240 292 654 722
10,000
303 367 823 910
15,000
347 420 943 1042
20,000
381 463 1037 1147
25,000
411 498 1117 1235
30,000
437 530 1188 1313
35,000
460 558 1250 1382
40,000
481 583 1307 1445
50,000
518 628 1408 1556
60,000
550 667 1496 1654
80,000
605 735 1647 1820
100,000
652 791 1774 1961
*Prospective RMS Symmetrical Amperes Short-Circuit Current
Current-Limiting Effects
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