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KLDR010.TXP
INDUSTRIAL FUSE, TIME DELAY, 10A, 600V
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- Manufacturer: LITTELFUSE
- Product type: Industrial & Electrical Power Fuses
- Product Range:POWR-GARD KLDR Series; Fuse Current:10A; Voltage Rating VAC:600V; Voltage Rating VDC:300V; Fuse Size Metric:10.3mm x 38.1mm; Fuse Size Imperial:0. 64W5759
- Fuse Current: 10A
- Product Range: POWR-GARD KLDR Series
- Fuse Size Metric: 10.3mm x 38.1mm
- Fuse Size Imperial: 0.41" x 1.5"
- Voltage Rating VAC: 600V
- Voltage Rating VDC: 300V
- Blow Characteristic: Time Delay
| Delivery and price | |
|---|---|
| Units per pack | 500 |
| Price | 14.53 € |
| Current stock | 50+ |
| Lead time | 30 days |
Datasheet
**Class CC Fuses** KLDR Series ## 600 V ac • 300 V dc • Time-Delay •[1] ⁄10 –30 A ## **Description** KLDR Series time-delay fuses are designed to protect control transformers, solenoids, and similar inductive components with high-magnetizing currents during the first half-cycle. These small-sized fuses provide excellent protection of motor branch circuits containing IEC or NEMA-rated motor controllers or contactors. The KLDR Series fuses closely match most control power transformer characteristics, which permits them to be sized in accordance with the latest revisions of UL 508 (Industrial Control) and UL 845 (Motor Control Centers). ## **Features & Benefits** |FEATURES|BENEFITS| |---|---| |**Current-limiting**|Reduces damage caused by heating and magnetic effects of short-<br>circuit currents| |**Short-circuit protection**|Improves safety with faster response times to fault currents| |**Rejection capability**|Prevents use of fuses with lower interrupting ratings or voltage when<br>used with corresponding fuse holders| |**Time-delay**|Allows for a temporary current surge for a short period of time<br>without blowing| ## **Applications** - Transformer and solenoid protection ## **Specifications** **Voltage Rating** Ac: 600 V Dc: 300 V **Amperage Range** 1⁄10 – 30 A **Interrupting Ratings** Ac: 200,000 A rms symmetrical Dc: 20,000 A self-certified **Material** Body: Melamine Caps: Nickel-plated Bronze **Fuse Weight** .019 lb (8.62g) **Applicable Standards** UL 248-4, Class CC **Environmental** RoHS Compliant **Country of Origin** Mexico **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **1 of 10** **Class CC Fuses** KLDR Series **==> picture [56 x 55] intentionally omitted <==** **==> picture [314 x 55] intentionally omitted <==** ## **Certification & Compliance** |**UL**|UL Listed (File: E81895)| |---|---| |**CSA**|CSA Certified (File: LR29862)| |**CE**|EU_DOC-KLDR_P_210128| |**RoHS**|RoHS 2 Directive 2011/65/EU; Directive (EU) 2015/863| ## **Accessories** L60030C series fuse holder LPSC/LFPSC Touch-Safe series fuse holder LEC series inline fuse holder 571/572 series panel mount fuse holder **==> picture [494 x 407] intentionally omitted <==** **----- Start of picture text -----**<br> Ordering Information<br>AMPERE CATALOG PRODUCT PACK ORDERING<br>UPC<br>RATING NUMBER MARKING QUANTITY NUMBER<br>1⁄10 KLDR.100 KLDR [1] ⁄10 A 10 KLDR.100TXP 07945896877<br>100 KLDR.100HXP 07945879278<br>1⁄8 KLDR.125 KLDR [1] ⁄8 A 10 KLDR.125TXP 07945896878<br>100 KLDR.125HXP 07945879279<br>15⁄100 KLDR.150 KLDR [15] ⁄100 A 10 KLDR.150TXP 07945896879<br>100 KLDR.150HXP 07945879280<br>3⁄16 KLDR.187 KLDR [3] ⁄16 A 10 KLDR.187TXP 07945896880<br>100 KLDR.187HXP 07945879281<br>2⁄10 KLDR.200 KLDR [2] ⁄10 A 10 KLDR.200TXP 07945879239<br>100 KLDR.200HXP 07945879282<br>1⁄4 KLDR.250 KLDR [1] ⁄4 A 10 KLDR.250TXP 07945879240<br>100 KLDR.250HXP 07945879283<br>3⁄10 KLDR.300 KLDR [3] ⁄10 A 10 KLDR.300TXP 07945879241<br>100 KLDR.300HXP 07945879284<br>4⁄10 KLDR.400 KLDR [4] ⁄10 A 10 KLDR.400TXP 07945879242<br>100 KLDR.400HXP 07945879285<br>1⁄2 KLDR.500 KLDR [1] ⁄2 A 10 KLDR.500TXP 07945879243<br>100 KLDR.500HXP 07945879286<br>6⁄10 KLDR.600 KLDR [6] ⁄10 A 10 KLDR.600TXP 07945879244<br>100 KLDR.600HXP 07945879287<br>3⁄4 KLDR.750 KLDR [3] ⁄4 A 10 KLDR.750TXP 07945879245<br>100 KLDR.750HXP 07945879288<br>8⁄10 KLDR.800 KLDR [8] ⁄10 A 10 KLDR.800TXP 07945879246<br>100 KLDR.800HXP 07945879289<br>10 KLDR001.TXP 07945879247<br>1 KLDR001 KLDR 1 A<br>100 KLDR001.HXP 07945879290<br>10 KLDR1.12TXP 07945879248<br>1 [1] ⁄8 KLDR1.12 KLDR 1 [1] ⁄8 A<br>100 KLDR1.12HXP 07945879291<br>10 KLDR1.25TXP 07945879249<br>1 [1] ⁄4 KLDR1.25 KLDR 1 [1] ⁄4 A<br>100 KLDR1.25HXP 07945879292<br>10 KLDR01.4TXP 07945879250<br>1 [4] ⁄10 KLDR01.4 KLDR 1 [4] ⁄10 A<br>100 KLDR01.4HXP 07945879293<br>**----- End of picture text -----**<br> **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **2 of 10** **Class CC Fuses** KLDR Series **==> picture [56 x 55] intentionally omitted <==** **==> picture [314 x 55] intentionally omitted <==** **==> picture [494 x 589] intentionally omitted <==** **----- Start of picture text -----**<br> Ordering Information<br>AMPERE CATALOG PRODUCT PACK ORDERING<br>UPC<br>RATING NUMBER MARKING QUANTITY NUMBER<br>10 KLDR01.5TXP 07945879251<br>1 [1] ⁄2 KLDR01.5 KLDR 1 [1] ⁄2 A<br>100 KLDR01.5HXP 07945879294<br>10 KLDR01.6TXP 07945879252<br>1 [6] ⁄10 KLDR01.6 KLDR 1 [6] ⁄10 A<br>100 KLDR01.6HXP 07945879295<br>10 KLDR01.8TXP 07945879253<br>1 [8] ⁄10 KLDR01.8 KLDR 1 [8] ⁄10 A<br>100 KLDR01.8HXP 07945879296<br>10 KLDR002.TXP 07945879254<br>2 KLDR002 KLDR 2A<br>100 KLDR002.HXP 07945879297<br>10 KLDR2.25TXP 07945879255<br>2 [1] ⁄4 KLDR2.25 KLDR 2 [1] ⁄4 A<br>100 KLDR2.25HXP 07945879298<br>10 KLDR02.5TXP 07945879256<br>2 [1] ⁄2 KLDR02.5 KLDR 2 [1] ⁄2 A<br>100 KLDR02.5HXP 07945879299<br>10 KLDR02.8TXP 07945879257<br>2 [8] ⁄10 KLDR02.8 KLDR 2 [8] ⁄10 A<br>100 KLDR02.8HXP 07945879300<br>10 KLDR003.TXP 07945879258<br>3 KLDR003 KLDR 3A<br>100 KLDR003.HXP 07945879301<br>10 KLDR03.2TXP 07945879259<br>3 [2] ⁄10 KLDR03.2 KLDR 3 [2] ⁄10 A<br>100 KLDR03.2HXP 07945879302<br>10 KLDR03.5TXP 07945879260<br>3 [1] ⁄2 KLDR03.5 KLDR 3 [1] ⁄2 A<br>100 KLDR03.5HXP 07945879303<br>10 KLDR004.TXP 07945879261<br>4 KLDR004 KLDR 4A<br>100 KLDR004.HXP 07945879304<br>10 KLDR04.5TXP 07945879262<br>4 [1] ⁄2 KLDR04.5 KLDR 4 [1] ⁄2A<br>100 KLDR04.5HXP 07945879305<br>10 KLDR005.TXP 07945879263<br>5 KLDR005 KLDR 5A<br>100 KLDR005.HXP 07945879306<br>10 KLDR05.6TXP 07945879264<br>5 [6] ⁄10 KLDR05.6 KLDR 5 [6] ⁄10 A<br>100 KLDR05.6HXP 07945879307<br>10 KLDR006.TXP 07945879265<br>6 KLDR006 KLDR 6A<br>100 KLDR006.HXP 07945879308<br>10 KLDR6.25TXP 07945879266<br>6 [1] ⁄4 KLDR6.25 KLDR 6 [1] ⁄4 A<br>100 KLDR6.25HXP 07945879309<br>10 KLDR007.TXP 07945879267<br>7 KLDR007 KLDR 7A<br>100 KLDR007.HXP 07945879310<br>10 KLDR07.5TXP 07945879268<br>7 [1] ⁄2 KLDR07.5 KLDR 7 [1] ⁄2 A<br>100 KLDR07.5HXP 07945879311<br>10 KLDR008.TXP 07945879269<br>8 KLDR008 KLDR 8A<br>100 KLDR008.HXP 07945879312<br>10 KLDR009.TXP 07945879270<br>9 KLDR009 KLDR 9A<br>100 KLDR009.HXP 07945879313<br>10 KLDR010.TXP 07945879271<br>10 KLDR010 KLDR 10A<br>100 KLDR010.HXP 07945879314<br>10 KLDR012.TXP 07945879272<br>12 KLDR012 KLDR 12A<br>100 KLDR012.HXP 07945879315<br>10 KLDR015.TXP 07945879273<br>15 KLDR015 KLDR 15A<br>100 KLDR015.HXP 07945879316<br>10 KLDR17.5TXP 07945879274<br>17 [1] ⁄2 KLDR17.5 KLDR 17 [1] ⁄2 A<br>100 KLDR17.5HXP 07945879317<br>**----- End of picture text -----**<br> **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **3 of 10** **Class CC Fuses** KLDR Series **==> picture [56 x 55] intentionally omitted <==** **==> picture [314 x 55] intentionally omitted <==** |**Ordering Information**|**Ordering Information**|**Ordering Information**|**Ordering Information**|**Ordering Information**|**Ordering Information**| |---|---|---|---|---|---| |AMPERE<br>RATING|CATALOG<br>NUMBER|PRODUCT<br>MARKING|PACK<br>QUANTITY|ORDERING<br>NUMBER|UPC| |20|KLDR020|KLDR 20A|10<br>100|KLDR020.TXP<br>KLDR020.HXP|07945879275<br>07945879318| |25|KLDR025|KLDR 25A|10<br>100|KLDR025.TXP<br>KLDR025.HXP|07945879276<br>07945879319| |30|KLDR030|KLDR 30A|10<br>100|KLDR030.TXP<br>KLDR030.HXP|07945879277<br>07945879320| ## **Dimensions Inches (mm)** **==> picture [185 x 90] intentionally omitted <==** **----- Start of picture text -----**<br> .25<br>1.50 (6.4)<br>(38.1)<br>.41<br>0-30 A<br>(10.3)<br>. 125<br>.50 (3.2)<br>(12.7)<br>**----- End of picture text -----**<br> ## **Electrical Specification - Agency Requirements** **==> picture [494 x 51] intentionally omitted <==** **----- Start of picture text -----**<br> OPENING TIME<br>AMPERAGE RATING<br>100 % OF AMP RATING PER UL 135 % OF AMP RATING PER UL 200 % OF AMP RATING PER UL<br>1⁄10 –30 Temperature Stabilization 60 Minutes Max 12 Seconds Minimum<br>**----- End of picture text -----**<br> ## **Electrical Specifications** **==> picture [494 x 245] intentionally omitted <==** **----- Start of picture text -----**<br> VOLTAGE INTERRUPTING MELT TOTAL AGENCY<br>CATALOG RATING (V) RATING (A) (PRE-ARC) CLEARING APPROVALS<br>NUMBER I [2] T (A [2] SEC)<br>I [2] T (A [2] S)<br>AC DC AC DC 200 KA UL CSA<br>KLDR.100 600 300 200,000 20,000 .0004 .0059 • •<br>KLDR.125 600 300 200,000 20,000 .0007 .0055 • •<br>KLDR.150 600 300 200,000 20,000 .0016 .0059 • •<br>KLDR.187 600 300 200,000 20,000 .0040 .0267 • •<br>KLDR.200 600 300 200,000 20,000 .0018 .0230 • •<br>KLDR.250 600 300 200,000 20,000 .0138 .0967 • •<br>KLDR.300 600 300 200,000 20,000 .0111 .1005 • •<br>KLDR.400 600 300 200,000 20,000 .0579 .1420 • •<br>KLDR.500 600 300 200,000 20,000 .0877 .3121 • •<br>KLDR.600 600 300 200,000 20,000 .1404 .3742 • •<br>KLDR.750 600 300 200,000 20,000 .2911 1.972 • •<br>KLDR.800 600 300 200,000 20,000 .2416 2.064 • •<br>KLDR001 600 300 200,000 20,000 .4494 5.883 • •<br>KLDR1.12 600 300 200,000 20,000 .5049 5.149 • •<br>**----- End of picture text -----**<br> **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **4 of 10** **Class CC Fuses** KLDR Series **==> picture [56 x 55] intentionally omitted <==** **==> picture [314 x 55] intentionally omitted <==** **==> picture [494 x 461] intentionally omitted <==** **----- Start of picture text -----**<br> VOLTAGE INTERRUPTING MELT TOTAL AGENCY<br>CATALOG RATING (V) RATING (A) (PRE-ARC) CLEARING APPROVALS<br>NUMBER I [2] T (A [2] SEC)<br>I [2] T (A [2] S)<br>AC DC AC DC 200 KA UL CSA<br>KLDR1.25 600 300 200,000 20,000 .4367 7.354 • •<br>KLDR01.4 600 300 200,000 20,000 .8135 7.639 • •<br>KLDR01.5 600 300 200,000 20,000 .9302 5.885 • •<br>KLDR01.6 600 300 200,000 20,000 .7495 6.682 • •<br>KLDR01.8 600 300 200,000 20,000 .9964 6.594 • •<br>KLDR002 600 300 200,000 20,000 .8615 14.01 • •<br>KLDR2.25 600 300 200,000 20,000 1.126 26.41 • •<br>KLDR02.5 600 300 200,000 20,000 2.087 35.35 • •<br>KLDR02.8 600 300 200,000 20,000 21.28 45.47 • •<br>KLDR003 600 300 200,000 20,000 23.21 55.99 • •<br>KLDR03.2 600 300 200,000 20,000 37.92 57.27 • •<br>KLDR03.5 600 300 200,000 20,000 21.42 109.4 • •<br>KLDR004 600 300 200,000 20,000 83.81 258.6 • •<br>KLDR04.5 600 300 200,000 20,000 83.89 110.6 • •<br>KLDR005 600 300 200,000 20,000 63.33 84.04 • •<br>KLDR05.6 600 300 200,000 20,000 87.66 114.0 • •<br>KLDR006 600 300 200,000 20,000 129.5 161.9 • •<br>KLDR6.25 600 300 200,000 20,000 147.6 261.7 • •<br>KLDR007. 600 300 200,000 20,000 202.4 513.4 • •<br>KLDR07.5 600 300 200,000 20,000 321.8 813.0 • •<br>KLDR008 600 300 200,000 20,000 111.2 1,145 • •<br>KLDR009 600 300 200,000 20,000 73.40 1,334 • •<br>KLDR010 600 300 200,000 20,000 132.0 934.8 • •<br>KLDR012 600 300 200,000 20,000 154.7 1,723 • •<br>KLDR015 600 300 200,000 20,000 200.5 2,248 • •<br>KLDR17.5 600 300 200,000 20,000 87.50 722.8 • •<br>KLDR020 600 300 200,000 20,000 123.8 1,363 • •<br>KLDR025 600 300 200,000 20,000 226.0 1,710 • •<br>KLDR030 600 300 200,000 20,000 299.6 1,990 • •<br>**----- End of picture text -----**<br> **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **5 of 10** **Class CC Fuses** KLDR Series **==> picture [56 x 55] intentionally omitted <==** **==> picture [314 x 55] intentionally omitted <==** ## **Temperature Rerating Curve** Ambient temperature: temperature of air immediately surrounding fuse **==> picture [301 x 217] intentionally omitted <==** **----- Start of picture text -----**<br> 60<br>40<br>20<br>0 0<br>20<br>40<br>60<br>-60°C -40°C -20°C 0°C 20°C 40°C 60°C 80°C 100°C 120°C 140°C<br>-76°F -40°F -4°F 32°F 68°F 104°F 140°F 176°F 212°F 248°F 284°F<br>AMBIENT TEMPERATURE<br>PERCENT OF UPRATING<br>PERCENT OF DOWNRATING<br>**----- End of picture text -----**<br> ## **Current-Limiting Effects** **==> picture [494 x 239] intentionally omitted <==** **----- Start of picture text -----**<br> SHORT APPARENT RMS SYMMETRICAL CURRENT FOR VARIOUS FUSE RATINGS<br>CIRCUIT<br>CURRENT* 4 A 6 A 7.5 A 8 A 10 A 12 A 15 A 20 A 30 A<br>5,000 349 420 521 437 359 369 435 456 621<br>10,000 440 529 656 551 452 465 548 575 783<br>15,000 504 605 751 631 517 532 627 658 896<br>20,000 554 666 827 694 569 585 690 724 986<br>25,000 597 718 890 748 613 630 743 780 1063<br>30,000 634 763 946 795 651 670 790 829 1129<br>35,000 668 803 996 837 686 705 832 872 1189<br>40,000 698 840 1041 875 717 737 870 912 1243<br>50,000 752 904 1122 942 772 794 937 983 1339<br>60,000 799 961 1192 1001 821 844 995 1044 1423<br>80,000 880 1058 1312 1102 903 929 1096 1149 1566<br>100,000 948 1139 1413 1187 973 1001 1180 1238 1687<br>150,000 1085 1304 1618 1359 1114 1146 1351 1417 1931<br>200,000 1194 1436 1781 1496 1226 1261 1487 1560 2125<br>**----- End of picture text -----**<br> *Prospective RMS Symmetrical Amperes Short-Circuit Current _Note: Data Derived from Peak Let-Thru Curve_ **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **6 of 10** **Class CC Fuses** KLDR Series ## ~~**P**~~ **eak Let-Thru Curves** **==> picture [475 x 579] intentionally omitted <==** **----- Start of picture text -----**<br> 1,000,000 1,000,000<br>100,000 100,000<br>6A - 8A -<br>4A -<br>10,000 10,000<br>1,000 1,000<br>100 100<br>100 1,000 10,000 100,000 100 1,000 10,000 100,000<br>AVAILABLE FAULT CURRENT AVAILABLE FAULT CURRENT<br>SYMMETRICAL R.M.S. AMPERES SYMMETRICAL R.M.S. AMPERES<br>1,000,000 1,000,000<br>100,000 100,000<br>15A -<br>10A -<br>12A -<br>10,000 10,000<br>1,000 1,000<br>100 100<br>100 1,000 10,000 100,000 100 1,000 10,000 100,000<br>AVAILABLE FAULT CURRENT AVAILABLE FAULT CURRENT<br>SYMMETRICAL R.M.S. AMPERES SYMMETRICAL R.M.S. AMPERES<br>PEAK LET- THRU IN AMPERES PEAK LET- THRU IN AMPERES<br>PEAK LET- THRU IN AMPERES PEAK LET- THRU IN AMPERES<br>**----- End of picture text -----**<br> **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **7 of 10** ## **Class CC Fuses** KLDR Series ee ## ~~**P**~~ **eak Let-Thru Curves** **==> picture [219 x 273] intentionally omitted <==** **----- Start of picture text -----**<br> 1,000,000<br>100,000<br>30A -<br>20A -<br>10,000<br>1,000<br>100<br>100 1,000 10,000 100,000<br>AVAILABLE FAULT CURRENT<br>SYMMETRICAL R.M.S. AMPERES<br>PEAK LET- THRU IN AMPERES<br>**----- End of picture text -----**<br> ## **Time Current Curves** **==> picture [230 x 270] intentionally omitted <==** **----- Start of picture text -----**<br> 1000 900 800 700 1000 900 800 700<br>600 500 - 1/10A 600 500<br>400 - 1/8A 400<br>300 - 15/100A 300<br>200 - 3/16A 200<br>- 2/10A<br>- 1/4A<br>100 90 80 70 100 90 80 70<br>60 e a 60<br>50 50<br>40 40<br>30 30<br>20 20<br>10 9 8 7 10 9 8 7<br>6 6<br>5 5<br>4 4<br>3 3<br>2 2<br>0.9 0.8 0.7 1 0.9 0.8 0.7 1<br>0.6 0.6<br>0.5 0.5<br>0.4 0.4<br>0.3 0.3<br>0.2 0.2<br>0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1<br>0.06 0.06<br>0.05 0.05<br>0.04 0.04<br>0.03 0.03<br>0.02 0.02<br>0.01 0.01<br>CURRENT IN AMPERES<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>TIME IN SECONDS<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>**----- End of picture text -----**<br> **==> picture [230 x 270] intentionally omitted <==** **----- Start of picture text -----**<br> 1000 900 800 700 1000 900 800 700<br>600 600<br>500 500<br>400 400<br>300 300<br>- 3/10A<br>200 - 4/10A 200<br>- 1/2A<br>100 90 80 70 60 : - 6/10A - 3/4A 100 90 80 70 60<br>50 - 8/10A 50<br>40 40<br>30 30<br>20 20<br>10 9 8 7 10 9 8 7<br>6 6<br>5 5<br>4 4<br>3 3<br>2 2<br>0.9 0.8 0.7 1 0.9 0.8 0.7 1<br>0.6 0.6<br>0.5 0.5<br>0.4 0.4<br>0.3 0.3<br>0.2 0.2<br>0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1<br>0.06 0.06<br>0.05 0.05<br>0.04 0.04<br>0.03 0.03<br>0.02 0.02<br>0.01 0.01<br>CURRENT IN AMPERES<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>TIME IN SECONDS<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>**----- End of picture text -----**<br> **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **8 of 10** **Class CC Fuses** KLDR Series **==> picture [56 x 55] intentionally omitted <==** **==> picture [314 x 55] intentionally omitted <==** ## **Time Current Curves** **==> picture [494 x 282] intentionally omitted <==** **----- Start of picture text -----**<br> 1000 900 800 700 1000 900 800 700 1000 900 800 700 1000 900 800 700<br>600 600 600 600<br>500 500 500 500<br>400 400 400 400<br>300 300 300 300<br>200 200 200 200<br>100 90 80 70 100 90 80 70 100 90 80 70 100 90 80 70<br>60 60 60 60<br>50 50 50 50<br>40 - 1A 40 40 - 1-1/2A 40<br>30 - 1-1/8A 30 30 - 1-6/10A 30<br>20 - 1-1/4A 20 20 - 1-8/10A 20<br>- 1-4/10A - 2A<br>- 2-1/4A<br>10 9 8 7 10 9 8 7 10 9 8 7 10 9 8 7<br>6 6 6 6<br>5 5 5 5<br>4 4 4 4<br>3 3 3 3<br>2 2 2 2<br>0.9 0.8 0.7 1 0.9 0.8 0.7 1 0.9 0.8 0.7 1 0.9 0.8 0.7 1<br>0.6 0.6 0.6 0.6<br>0.5 0.5 0.5 0.5<br>0.4 0.4 0.4 0.4<br>0.3 0.3 0.3 0.3<br>0.2 0.2 0.2 0.2<br>0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1<br>0.06 0.06 0.06 0.06<br>0.05 0.05 0.05 0.05<br>0.04 0.04 0.04 0.04<br>0.03 0.03 0.03 0.03<br>0.02 0.02 0.02 0.02<br>0.01 0.01 0.01 0.01<br>CURRENT IN AMPERES CURRENT IN AMPERES<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>TIME IN SECONDS TIME IN SECONDS<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>**----- End of picture text -----**<br> **==> picture [494 x 282] intentionally omitted <==** **----- Start of picture text -----**<br> 1000 900 800 700 1000 900 800 700 1000 900 800 700 1000 900 800 700<br>600 600 600 600<br>500 500 500 500<br>400 400 400 400<br>300 300 300 300<br>200 200 200 200<br>100 90 80 70 100 90 80 70 100 90 80 70 100 90 80 70<br>60 60 60 60<br>50 50 50 50<br>40 - 2-1/2A 40 40 40<br>30 - 2-8/10A 30 30 - 3A 30<br>20 20 20 - 3-2/10A 20<br>- 3-1/2A<br>- 4A<br>10 9 8 7 10 9 8 7 10 9 8 7 10 9 8 7<br>6 6 6 6<br>5 5 5 5<br>4 4 4 4<br>3 3 3 3<br>2 2 2 2<br>0.9 0.8 0.7 1 0.9 0.8 0.7 1 0.9 0.8 0.7 1 0.9 0.8 0.7 1<br>0.6 0.6 0.6 0.6<br>0.5 0.5 0.5 0.5<br>0.4 0.4 0.4 0.4<br>0.3 0.3 0.3 0.3<br>0.2 0.2 0.2 0.2<br>0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1<br>0.06 0.06 0.06 0.06<br>0.05 0.05 0.05 0.05<br>0.04 0.04 0.04 0.04<br>0.03 0.03 0.03 0.03<br>0.02 0.02 0.02 0.02<br>0.01 0.01 0.01 0.01<br>CURRENT IN AMPERES CURRENT IN AMPERES<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>TIME IN SECONDS TIME IN SECONDS<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>**----- End of picture text -----**<br> **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **9 of 10** **Class CC Fuses** KLDR Series **==> picture [56 x 55] intentionally omitted <==** **==> picture [314 x 55] intentionally omitted <==** ## **Time Current Curves** **==> picture [239 x 282] intentionally omitted <==** **----- Start of picture text -----**<br> 1000 900 800 700 1000 900 800 700<br>600 600<br>500 500<br>400 - 4-1/2A 400<br>300 - 5A 300<br>200 - 5-6/10A 200<br>- 6A<br>100 90 80 70 100 90 80 70<br>60 60<br>50 50<br>40 40<br>30 30<br>20 20<br>10 9 8 7 10 9 8 7<br>6 6<br>5 5<br>4 4<br>3 3<br>2 2<br>0.9 0.8 0.7 1 0.9 0.8 0.7 1<br>0.6 0.6<br>0.5 0.5<br>0.4 0.4<br>0.3 0.3<br>0.2 0.2<br>0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1<br>0.06 0.06<br>0.05 0.05<br>0.04 0.04<br>0.03 0.03<br>0.02 0.02<br>0.01 0.01<br>CURRENT IN AMPERES<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>TIME IN SECONDS<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>**----- End of picture text -----**<br> **==> picture [239 x 282] intentionally omitted <==** **----- Start of picture text -----**<br> 1000 900 800 700 1000 900 800 700<br>600 600<br>500 500<br>400 400<br>300 300<br>200 200<br>100 90 80 70 - 6-1/4A - 7.5A 100 90 80 70<br>60 60<br>50 50<br>40 40<br>30 30<br>20 20<br>10 9 8 7 10 9 8 7<br>6 6<br>5 5<br>4 4<br>3 3<br>2 2<br>0.9 0.8 0.7 1 0.9 0.8 0.7 1<br>0.6 0.6<br>0.5 0.5<br>0.4 0.4<br>0.3 0.3<br>0.2 0.2<br>0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1<br>0.06 0.06<br>0.05 0.05<br>0.04 0.04<br>0.03 0.03<br>0.02 0.02<br>0.01 0.01<br>CURRENT IN AMPERES<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>TIME IN SECONDS<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>**----- End of picture text -----**<br> **==> picture [494 x 282] intentionally omitted <==** **----- Start of picture text -----**<br> 1000 900 800 700 1000 900 800 700 1000 900 800 700 1000 900 800 700<br>600 600 600 600<br>500 500 500 500<br>400 - 8A 400 400 400<br>300 300 300 - 20A 300<br>- 10A<br>200 200 200 - 25A 200<br>- 12A - 30A<br>100 90 80 70 - 15A 100 90 80 70 100 90 80 70 100 90 80 70<br>60 60 60 60<br>50 50 50 50<br>40 40 40 40<br>30 30 30 30<br>20 20 20 20<br>10 9 8 7 10 9 8 7 10 9 8 7 10 9 8 7<br>6 6 6 6<br>5 5 5 5<br>4 4 4 4<br>3 3 3 3<br>2 2 2 2<br>0.9 0.8 0.7 1 0.9 0.8 0.7 1 0.9 0.8 0.7 1 0.9 0.8 0.7 1<br>0.6 0.6 0.6 0.6<br>0.5 0.5 0.5 0.5<br>0.4 0.4 0.4 0.4<br>0.3 0.3 0.3 0.3<br>0.2 0.2 0.2 0.2<br>0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1 0.09 0.08 0.07 0.1<br>0.06 0.06 0.06 0.06<br>0.05 0.05 0.05 0.05<br>0.04 0.04 0.04 0.04<br>0.03 0.03 0.03 0.03<br>0.02 0.02 0.02 0.02<br>0.01 0.01 0.01 0.01<br>CURRENT IN AMPERES CURRENT IN AMPERES<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>TIME IN SECONDS TIME IN SECONDS<br>0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 2 3 4 5 6 7 8 9 10 20 30 40 50 60 70 80 90 100 200 300 400 500 600 700 800 900 1000<br>**----- End of picture text -----**<br> **Disclaimer Notice –** Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at **www.littelfuse.com/product-disclaimer.** **Littelfuse.com/KLDR** ©2022 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/27/2022 **10 of 10**
Updated at April 17, 2026
Founded in 1927 and headquartered in Chicago, Illinois, Littelfuse is a premier global manufacturer of circuit protection, power control, and sensing technologies. Widely recognized for pioneering the first small, fast-acting protective fuse, the company has grown into an industry leader whose highly reliable components are essential to modern industrial, transportation, and consumer electronics applications worldwide. At the core of the Littelfuse portfolio is an expansive and industry-leading range of circuit protection solutions. This encompasses a massive selection of traditional fuses, fuse holders, and resettable PTC thermistor fuses designed to safely interrupt overcurrent conditions. To defend against electrical overstress, Littelfuse also provides advanced transient voltage suppression (TVS) technologies, including thousands of specialized TVS diodes, TVS varistors, and gas discharge tubes (GDTs) that ensure robust defense against voltage spikes and environmental hazards. Beyond its foundational protection components, Littelfuse manufactures a diverse array of discrete semiconductors, sensors, and switching devices. Engineers rely on their high-performance thyristors, including TRIACs and SCRs, alongside power-efficient Schottky diodes and MOSFETs for demanding power control applications. Complemented by precision proximity sensors and highly reliable reed and solid-state relays, Littelfuse delivers the critical building blocks required for secure, efficient, and complete system design.
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