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KLKD001.T
Fuse, Industrial / Power, POWR-GARD KLKD, 1 A, 600 V, 600 V, 10.3mm x 38.1mm, 13/32" x 1-1/2"
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: LITTELFUSE
- Product type: Industrial & Electrical Power Fuses
- Product Range:POWR-GARD KLKD Series; Fuse Current:1A; Voltage Rating VAC:600V; Voltage Rating V DC:600V; Fuse Size Metric:10.3mm x 38.1mm; Fuse Size Imperial:13/32" x 1-1/2"; Blow Cha
- SVHC: To Be Advised
- Fuse Current: 1A
- Product Range: POWR-GARD KLKD
- Fuse Size Metric: 10.3mm x 38.1mm
- Fuse Size Imperial: 13/32" x 1-1/2"
- Voltage Rating VAC: 600V
- Voltage Rating VDC: 600V
- Blow Characteristic: Fast Acting
| Delivery and price | |
|---|---|
| Units per pack | 20 |
| Price | 21.62 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
**POWR-GARD[®] Fuse** KLKD SERIES 10 X 38 600 V ac/dc • Fast Acting •[1] /10–30 A ## **Specifications** **Voltage Rating Amperage Ratings Interrupting Ratings** 600 V ac/V dc[1] /10 – 30 A Ac: 100 kA 200 kA Littelfuse self-certified Dc:[1] /10–30: 10 kA (UL 248-19) 1/10–30: 50 kA (UL 248-14) ## **Description** The KLKD fuse series is fast-acting with a high dc voltage rating. This family of midget-style fuses (10 x 38 mm) is used in solar combiner boxes and in circuits with dc fault currents up to 50,000 amperes. KLKD fuses are available in standard and board-mount configurations. In addition, the KLKD series has been designed to meet both the UL and IEC photovoltaic fuse standards. Littelfuse offers a wide range of ampere ratings to match specific requirements in a variety of applications. ## **Features/Benefits** - Designed to UL and IEC photovoltaic specifications ¹/10–30 ampere ratings available 50,000 amperes interrupting rating Available in ferrule or PCB mount options 1–5 ampere meets UL 1741 GFDI requirements ## **Applications** Combiner boxes and inverters Power supplies Desktop meters ## **Recommended Fuse Holders (Ferrule Fuse)** Body: melamine / Caps: copper alloy See derating curve UL Listed (File: E339112 and E10480) VDE Certified (No. 40033094) CSA Certified (File: LR29862) **Material Operating Temperature Approvals*** UL 248-14, UL 248-19, UL 1741 GFDI, CSA, IEC 60269-6 RoHS compliant Mexico **Applicable Standards Environmental Country of Origin** *Refer to Ordering Information Table ## **Dimensions Inches (mm)** **PCB 1-Tab** **Ferrule Version** **==> picture [236 x 154] intentionally omitted <==** **----- Start of picture text -----**<br> .06 (1.52) .02 (.51) .14<br>i (3.56) Ar<br>.04<br>(1.02)<br>1.5 1.5<br>(38.1) (38.1) 1.53<br>(38.86)<br>i= lAaf d<br>MOUNTING HOLE<br>.406 (10.31) .50 (12.7) .12 (3.05) DETAIL<br>.12 .28 (10.31).406<br>**----- End of picture text -----**<br> Littelfuse LPSM dead-front series Littelfuse L60030M open-face series ## **Web Resources** Download CAD drawings and other technical information: **Littelfuse.com/KLKD** Littelfuse.com/KLKD © 2021 Littelfuse, Inc. Rev:111221 **1 of 6** **POWR-GARD[®] Fuse** KLKD SERIES 10 X 38 **==> picture [262 x 58] intentionally omitted <==** ## **Ordering Information** (Ferrule Version) **==> picture [456 x 608] intentionally omitted <==** **----- Start of picture text -----**<br> AGENCY<br>SERIES AMPERAGE CATALOG PRODUCT PACKING ORDERING UPC CODE APPROVALS<br>RATING NUMBER MARKING QUANTITY NUMBER<br>UL VDE CSA<br>10 KLKD.100T 07945810189<br>KLKD 1/10 KLKD.100 KLKD 1/10A • •<br>100 KLKD.100H 07945896442<br>10 KLKD.200T 07945810190<br>KLKD 1/8 KLKD.125 KLKD 1/8A • •<br>100 KLKD.200H 07945896443<br>10 KLKD.100T 07945810191<br>KLKD 2/10 KLKD.200 KLKD 2/10A • •<br>100 KLKD.100H 07945896444<br>10 KLKD.250T 07945810192<br>KLKD 1/4 KLKD.250 KLKD 1/4A • •<br>100 KLKD.250H 07945896445<br>10 KLKD.300T 07945810193<br>KLKD 3/10 KLKD.300 KLKD 3/10A • •<br>100 KLKD.300H 07945896446<br>10 KLKD.500T 07945810194<br>KLKD 1/2 KLKD.500 KLKD 1/2A • •<br>100 KLKD.500H 07945896447<br>10 KLKD.750T 07945810195<br>KLKD 3/4 KLKD.750 KLKD 3/4A • •<br>100 KLKD.750H 07945896448<br>10 KLKD001.T 07945810196<br>KLKD 1 KLKD001 KLKD 1A • •<br>100 KLKD001.H 07945896449<br>10 KLKD01.5T 07945810197<br>KLKD 1 [1] /2 KLKD01.5 KLKD 1-1/2A • •<br>100 KLKD01.5H 07945896450<br>10 KLKD002.T 07945810198<br>KLKD 2 KLKD002 KLKD 2A • • •<br>100 KLKD002.H 07945896451<br>10 KLKD02.5T 07945810199<br>KLKD 2 [1] /2 KLKD02.5 KLKD 2-1/2A • • •<br>100 KLKD02.5H 07945896452<br>10 KLKD003.T 07945810200<br>KLKD 3 KLKD003 KLKD 3A • • •<br>100 KLKD003.H 07945896453<br>10 KLKD03.5T 07945810214<br>KLKD 3 [1] /2 KLKD03.5 KLKD 3-1/2A • • •<br>100 KLKD03.5H 07945896454<br>10 KLKD004.T 07945810201<br>KLKD 4 KLKD004 KLKD 4A • • •<br>100 KLKD004.H 07945896455<br>10 KLKD005.T 07945810202<br>KLKD 5 KLKD005 KLKD 5A • • •<br>100 KLKD005.H 07945896456<br>10 KLKD006.T 07945810203<br>KLKD 6 KLKD006 KLKD 6A • • •<br>100 KLKD006.H 07945896457<br>10 KLKD007.T 07945810204<br>KLKD 7 KLKD007 KLKD 7A • • •<br>100 KLKD007.H 07945896458<br>10 KLKD008.T 07945810205<br>KLKD 8 KLKD008 KLKD 8A • • •<br>100 KLKD008.H 07945896459<br>10 KLKD009.T 07945810215<br>KLKD 9 KLKD009 KLKD 9A • • •<br>100 KLKD009.H 07945896460<br>10 KLKD010.T 07945810206<br>KLKD 10 KLKD010 KLKD 10A • • •<br>100 KLKD010.H 07945896461<br>10 KLKD012.T 07945810207<br>KLKD 12 KLKD012 KLKD 12A • • •<br>100 KLKD012.H 07945896462<br>10 KLKD015.T 07945810208<br>KLKD 15 KLKD015 KLKD 15A • • •<br>100 KLKD015.H 07945896463<br>10 KLKD020.T 07945810209<br>KLKD 20 KLKD020 KLKD 20A • • •<br>100 KLKD020.H 07945896464<br>10 KLKD025.T 07945810210<br>KLKD 25 KLKD025 KLKD 25A • •<br>100 KLKD025.H 07945896465<br>10 KLKD030.T 07945810211<br>KLKD 30 KLKD030 KLKD 30A • •<br>100 KLKD030.H 07945896466<br>**----- End of picture text -----**<br> Littelfuse.com/KLKD © 2021 Littelfuse, Inc. Rev:111221 **2 of 6** **POWR-GARD[®] Fuse** KLKD SERIES 10 X 38 **==> picture [37 x 58] intentionally omitted <==** ## **Ordering Information** (PCB 1-Tab Version) **==> picture [458 x 186] intentionally omitted <==** **----- Start of picture text -----**<br> AMPERAGE CATALOG PRODUCT PACKING ORDERING APPROVALS<br>SERIES UPC CODE<br>RATING NUMBER MARKING QUANTITY NUMBER UL CSA<br>KLKD 1/10 KLKD.100R KLKD 1/10A-R 100 KLKD.100HXR 07945814857 • •<br>KLKD 1/2 KLKD.500R KLKD 1/2A-R 100 KLKD500.HXR 07945814858 • •<br>KLKD 1 KLKD001R KLKD 1A-R 100 KLKD001.HXR 07945812133 • •<br>KLKD 2 KLKD002R KLKD 2A-R 100 KLKD002.HXR 07945894349 • •<br>KLKD 3 KLKD003R KLKD 3A-R 100 KLKD003.HXR 07945818991 • •<br>KLKD 4 KLKD004R KLKD 4A-R 100 KLKD004.HXR 07945811495 • •<br>KLKD 5 KLKD005R KLKD 5A-R 100 KLKD005.HXR 07945814859 • •<br>KLKD 6 KLKD006R KLKD 6A-R 100 KLKD006.HXR 07945894350 • •<br>KLKD 8 KLKD008R KLKD 8A-R 100 KLKD008.HXR 07945894351 • •<br>KLKD 10 KLKD010R KLKD 10A-R 100 KLKD010.HXR 07945814860 • •<br>KLKD 12 KLKD012R KLKD 12A-R 100 KLKD012.HXR 07945894352 • •<br>KLKD 15 KLKD015R KLKD 15A-R 100 KLKD015.HXR 07945894353 • •<br>KLKD 20 KLKD020R KLKD 20A-R 100 KLKD020.HXR 07945894354 • •<br>KLKD 25 KLKD025R KLKD 25A-R 100 KLKD025.HXR 07945894355 • •<br>KLKD 30 KLKD030R KLKD 30A-R 100 KLKD030.HXR 07945894356 • •<br>**----- End of picture text -----**<br> ## **Electrical Specifications** **==> picture [505 x 414] intentionally omitted <==** **----- Start of picture text -----**<br> CATALOG INTERRUPTING TOTAL TOTAL<br>AMP NUMBER VOLTAGE RATING (KA) RESISTANCE NOM COLD AT 100 % RATED WATTS LOSS AT 80 % RATED WATTS LOSS MELTING IAVERAGE [2] t CLEARING I [2] t CLEARING I [2] t<br>RATING (A [2 ] s) 20 KA (A [2 ] s) 100 KA<br>FERRULE PCB AC DC AC DC (OHMS) CURRENT (W) CURRENT (W) (A [2] s) @ 600 V DC @ 600 V DC<br>1/10 KLKD.100 KLKD.100R 600 600 200 50 85.5 0.780 0.505 – 0.019 –<br>1/8 KLKD.125 – 600 600 200 50 65 0.975 0.659 – 0.010 –<br>2/10 KLKD.200 – 600 600 200 50 30.9 1.213 0.773 – 0.032 –<br>1/4 KLKD.250 – 600 600 200 50 22 1.364 0.870 – - –<br>3/10 KLKD.300 – 600 600 200 50 16.2 1.519 0.960 – 0.067 –<br>1/2 KLKD.500 KLKD.500R 600 600 200 50 8.16 1.961 1.237 – 0.197 –<br>3/4 KLKD.750 – 600 600 200 50 0.402 0.361 1.990 0.234 0.754 –<br>1 KLKD001 KLKD001R 600 600 200 50 0.252 0.388 0.273 0.678 1.827 0.008<br>1 [1] /2 KLKD01.5 – 600 600 200 50 0.134 0.409 0.229 2.890 – –<br>2 KLKD002 KLKD002R 600 600 200 50 0.129 0.823 0.606 2.379 3.919 0.012<br>2 [1] /2 KLKD02.5 – 600 600 200 50 0,0989 0.912 0.618 5.142 8.877 –<br>3 KLKD003 KLKD003R 600 600 200 50 0.0773 0.957 0.654 7.821 14.835 –<br>3 [1] /2 KLKD03.5 – 600 600 200 50 0,0613 1.120 0.826 12.417 21.048 –<br>4 KLKD004 KLKD004R 600 600 200 50 0,0511 1.367 0.891 18.945 30.760 0.019<br>5 KLKD005 KLKD005R 600 600 200 50 0,0363 1.400 0.938 34.163 56.514 0.024<br>6 KLKD006 KLKD006R 600 600 200 50 0,0261 1.516 0.998 62.951 96.824 0.035<br>7 KLKD007 – 600 600 200 50 0,0205 1.577 1.066 105.143 168.578 0.087<br>8 KLKD008 KLKD008R 600 600 200 50 0.0194 1.824 1.205 130.266 210.595 0.656<br>9 KLKD009 – 600 600 200 50 0.0166 2.208 1.428 164.221 266.633 –<br>10 KLKD010 KLKD010R 600 600 200 50 0.0128 1.893 1.300 278.390 454.628 211.667<br>12 KLKD012 KLKD012R 600 600 200 50 0.0103 2.296 1.584 445.010 744.775 440<br>15 KLKD015 KLKD015R 600 600 200 50 0.007855 2.045 1.570 137.333 351.240 –<br>20 KLKD020 KLKD020R 600 600 200 50 0.0045 2.133 15.930 462.056 1151.185 2120<br>25 KLKD025 KLKD025R 600 600 200 50 0.003532 2.550 1.933 834.529 1744.033 2085<br>30 KLKD030 KLKD030R 600 600 200 50 0.002776 3.701 1.983 1409 2757 3220<br>**----- End of picture text -----**<br> Littelfuse.com/KLKD © 2021 Littelfuse, Inc. Rev:111221 **3 of 6** **POWR-GARD[®] Fuse** KLKD SERIES 10 X 38 **==> picture [262 x 58] intentionally omitted <==** ## **Current-Limiting Effects** **==> picture [244 x 180] intentionally omitted <==** **----- Start of picture text -----**<br> APPARENT RMS SYMMETRICAL CURRENT<br>SHORT CIRCUIT FOR VARIOUS FUSE RATINGS<br>CURRENT*<br>1 1/2 A 12 A 25 A 30 A<br>5,000 240 292 654 722<br>10,000 303 367 823 910<br>15,000 347 420 943 1042<br>20,000 381 463 1037 1147<br>25,000 411 498 1117 1235<br>30,000 437 530 1188 1313<br>35,000 460 558 1250 1382<br>40,000 481 583 1307 1445<br>50,000 518 628 1408 1556<br>60,000 550 667 1496 1654<br>80,000 605 735 1647 1820<br>100,000 652 791 1774 1961<br>**----- End of picture text -----**<br> *Prospective RMS Symmetrical Amperes Short-Circuit Current ## **Electrical Specification – Agency Requirements** **==> picture [505 x 61] intentionally omitted <==** **----- Start of picture text -----**<br> OPENING TIME (MINUTES)<br>AMPERAGE<br>RATING 100 % of Ampere 113 % of Ampere 135 % of Ampere 145 % of Ampere 200 % of Ampere<br>Rating per UL Rating per IEC Rating per UL Rating per IEC Rating per UL<br>¹/10–30 Temperature Stabilization 60 min 60 max 60 max 4 max<br>**----- End of picture text -----**<br> ## **Temperature Derating Curve** (temperature of air immediately surrounding fuse) **==> picture [359 x 271] 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> Littelfuse.com/KLKD © 2021 Littelfuse, Inc. Rev:111221 **4 of 6** **POWR-GARD[®] Fuse** KLKD SERIES 10 X 38 ## **Recommended Process and Soldering Parameters** |WAVE PARAMETER<br>Preheat:<br>Temperature Minimum:<br>Temperature Maximum:<br>Pre-heat Time<br>Solder Pot Temperature<br>Solder Dwell Time<br>Complete Cycle Time|LEAD FREE<br>RECOMMENDATION<br>(Typical Industry Recommendation)<br>130 °C<br>—<br>75 Seconds Maximum<br>280 °C Maximum<br>270 °C for 8 Seconds Maximum<br>250 Seconds Maximum| |---|---| ## **Peak Let Thru Curve** **==> picture [289 x 318] intentionally omitted <==** **----- Start of picture text -----**<br> 1000000<br>100000<br>30A<br>25A<br>12A<br>1-1/2A<br>10000<br>1000<br>100 x<br>100 1000 10000 100000 1000000<br>AVAILABLE FAULT CURRENT<br>SYMMETRICAL R.M.S. AMPERES<br>PEAK LET- THRU IN AMPERES<br>**----- End of picture text -----**<br> Littelfuse.com/KLKD © 2021 Littelfuse, Inc. Rev:111221 **5 of 6** **POWR-GARD[®] Fuse** KLKD SERIES 10 X 38 **==> picture [262 x 58] intentionally omitted <==** ## **Time Current Curve ([1] /8–2[1] /2 A)** ## **Time Current Curve (3–12 A)** **==> picture [505 x 607] intentionally omitted <==** **----- Start of picture text -----**<br> 1000900800700600 1000900800700600 1000900800700600 1000900800700600<br>500 400 - 1/8 A 500 400 500400 500400<br>300 - 2/10 A 300 300 300<br>200 -- 1/4 A3/10 A 200 200 200<br>100605040309080 70 - - ---- 2-1/2 A1/2 A 3/4 A 1 A1-1/2 A2 A 1009080 70 60504030 100 80 706050403090 ------ 3 33 A4 A5 A6 A7 A -1/2A 1/2 A 10090 80 7060504030<br>20 20 20 - 8 A 20<br>- 9 A<br>109876 987610 109876 - - 12 A 10 A 109876<br>5 5 5 5<br>4 4 4 4<br>3 3 3 3<br>2 2 2 2<br>0.90.80.70.6 1 10.90.80.70.6 0.90.80.70.61 10.90.80.70.6<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>0.090.080.070.1 0.10.090.080.07 0.090.080.070.1 0.10.090.080.07<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 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>Time Current Curve (15–25 A) Time Current Curve (30 A)<br>1000900800700600 1000900800700600 1000900800700600 1000900800700600<br>500 500 500 500<br>400 400 400 400<br>300 300 300 300<br>200 200 200 200<br>10090 80 7060 10090 80 7060 100 80 706090 10090 80 7060<br>50 50 50 50<br>40 40 40 40<br>30 30 30 30<br>20 - 15 A 20 20 20<br>- 20 A<br>109876 - 25 A 109876 109876 - 30 A 109876<br>5 5 5 5<br>4 4 4 4<br>3 3 3 3<br>2 2 2 2<br>0.90.80.70.6 1 10.90.80.70.6 0.90.80.70.61 10.90.80.70.6<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>0.090.080.070.060.1 0.10.090.080.070.06 0.090.080.070.060.1 0.10.090.080.070.06<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>0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.090.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.91 2 3 4 5 6 7 8 109 20 30 40 50 60 70 80 90100 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 9001000<br>TIME IN SECONDS<br> TIME IN SECONDS<br>0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.090.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 10.9 2 3 4 5 6 7 8 910 20 30 40 50 60 70 80 90100 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 8 910 20 30 40 50 60 70 80 90100 200 300 400 500 600 700 800 900 1000<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<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 90100 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/KLKD © 2021 Littelfuse, Inc. Rev:111221 **6 of 6**
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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