KLKR.500T
FUSE, 500mA, 600V, FAST ACTING
- Manufacturer: LITTELFUSE
- Product type: Industrial & Electrical Power Fuses
- Product Range:POWR-GARD KLKR Series; Fuse Current:500mA; Voltage Rating VAC:600VAC; Voltage Rating VDC:300VDC; Fuse Size Metric:10.3mm x 38.1mm; Fuse Size Imperial:13/3 02B8076
- SVHC: To Be Advised
- Fuse Current: 500mA
- Product Range: POWR-GARD KLKR Series
- Fuse Size Metric: 10.3mm x 38.1mm
- Fuse Size Imperial: 13/32" x 1-1/2"
- Voltage Rating VAC: 600V
- Voltage Rating VDC: 300V
- Blow Characteristic: Fast Acting
| Delivery and price | |
|---|---|
| Units per pack | 500 |
| Price | 12.2 € |
| Current stock | 10+ |
| Lead time | 30 days |
**POWR-GARD[® ] Fuse Datasheet** UL Class CC ## ~~c~~ lass ~~cc~~ fuse ~~s~~ ## **KLDR Series** ## **600 VAC/300 VDC • Time-Delay •[1] /10-30 Amperes** ## **Description** KLDR fuses are time-delay fuses designed to protect control transformers, so le noids and similar inductive com ponents with high mag ne tiz ing currents during the first half-cycle. They provide ex cel lent protection of motor branch circuits con tain ing IEC or NEMA rated motor con trol lers or contactors. ## **Specifications** **Voltage Ratings:** AC: 600 V DC: 300 V **Interrupting Ratings:** AC: 200 kA rms symmetrical DC: 20 kA **Ampere Range:** 1/10 – 30 A **Approvals:** AC: Standard 248-4, Class CC UL Listed[1] /10-30 A (File No. E81895) CSA Certified[1] /10-30 A (File No. LR29862) DC: Littelfuse self-certified ## **Ordering Information** |||ampere ratings|ampere ratings|ampere ratings||| |---|---|---|---|---|---|---| |1/10<br>1/8<br>15/100<br>3/16<br>2/10<br>1/4<br>3/10<br>4/10<br>1/2||6/10<br>3/4<br>8/10<br>1<br>11/8<br>11/4<br>14/10<br>11/2<br>16/10|18/10<br>41/2<br>2<br>5<br>21/4<br>56/10<br>21/2<br>6<br>28/10<br>61/4<br>3<br>7<br>32/10<br>71/2<br>31/2<br>8<br>4<br>9|||10<br>12<br>15<br>171/2<br>20<br>25<br>30<br>—<br>—| |series<br>KLDR|||amperage<br>10<br>|<br>|||catalog<br>number<br>KLDR010<br>|<br>||system<br>number<br>KLDR010.T<br>||| ## **Web Resources** For additional information, visit: **www.littelfuse.com/kldr** ## **Recommended Fuseholders** LPSC Series L60030C Series ## **KLKR Series** ## **600 VAC/300 VDC • Fast-Acting •[1] /10-30 Amperes** ## **Description** KLKR Series Class CC fuses are fast-acting fuses intended for general purpose branch circuit protection. Their compact size, fast-acting overload response, and highly current-limiting design make them ideal for use in OEM equipment and control panels. ## **Specifications** **Voltage Ratings:** AC: 600 V DC: 300 V **Interrupting Ratings:** AC: 200 kA rms symmetrical DC: 20 kA **Ampere Range:** 1/10 – 30 A **Approvals:** AC: Standard 248-4, Class CC UL Listed[1] /10-30 A (File No. E81895) CSA Certified[1] /10-30 A (File No. LR29862) DC: Littelfuse self-certified ## **Ordering Information** |||ampere ratings|ampere ratings|ampere ratings|ampere ratings|ampere ratings||| |---|---|---|---|---|---|---|---|---| |1/10<br>1/8<br>2/10<br>1/4<br>3/10||1/2<br>3/4<br>1<br>11/2<br>2||21/2<br>3<br>31/2<br>4<br>5||6<br>7<br>8<br>9<br>10||12<br>15<br>20<br>25<br>30| |||||||||| |series||amperage|||catalog<br>number||system<br>number|| |KLKR<br>||||12||||KLKR012<br>|<br>|||||KLKR012.T| ## **Web Resources** For additional information, visit: **www.littelfuse.com/klkr** ## **Recommended Fuseholders** LPSC Series L60030C Series **1** ©June 2011 Littelfuse www.littelfuse.com **POWR-GARD[® ] Fuse Datasheet** UL Class CC **==> picture [93 x 32] intentionally omitted <==** ## ~~- c~~ lass ~~cc~~ /cd d ~~im~~ ensi ~~on~~ s ~~and current limiting effects~~ ## **Dimensions in inches (mm)** **==> picture [188 x 92] 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> **==> picture [173 x 91] intentionally omitted <==** **----- Start of picture text -----**<br> .850 35-60 A<br>(21.6)<br>1.880<br> (47.8)<br>**----- End of picture text -----**<br> ## **Current-Limiting Effects of CCMR (600 V) fuses** **==> picture [526 x 303] intentionally omitted <==** **----- Start of picture text -----**<br> apparent rms symmetrical current for Various fuse ratings<br>short circuit<br>current*<br>2 a 4 a 6 [1] ⁄4 a 10 a 12 a 15 a 20 a 30 a<br>5,000 160 190 330 370 525 600 625 750<br>10,000 180 220 400 440 600 700 725 875<br>15,000 200 250 430 480 675 775 800 950<br>20,000 220 260 460 520 720 825 850 1,000<br>25,000 230 280 480 550 750 850 900 1,050<br>30,000 240 290 500 570 800 900 950 1,125<br>35,000 245 300 520 590 825 925 975 1,175<br>40,000 255 310 550 600 850 975 1,000 1,200<br>50,000 260 330 570 640 875 1,000 1,100 1,300<br>60,000 280 340 600 670 900 1,050 1,125 1,350<br>80,000 300 360 625 700 1,000 1,125 1,200 1,400<br>100,000 310 380 650 750 1,050 1,200 1,250 1,500<br>150,000 340 420 700 800 1,150 1,300 1,400 1,600<br>200,000 350 440 750 850 1,200 1,400 1,450 1,750<br>**----- End of picture text -----**<br> *Prospective RMS Symmetrical Amperes Short-Circuit Current _Note: Data Derived from Peak Let-Thru Curves_ **2** ©June 2011 Littelfuse www.littelfuse.com **POWR-GARD[® ] Fuse Datasheet** UL Class CC ## **Peak Let-Thru Curve KLDR** **==> picture [538 x 575] intentionally omitted <==** **----- Start of picture text -----**<br> 1000000<br>100000<br>10000<br>10 A<br>8 A<br>6 A<br>4 A<br>1000<br>100<br>AVAILABLE FAULT CURRENT<br>SYMMETRICAL R. M. S. AMPERES<br>PEAK LET-THRU IN AMPERES<br>100 1000 10000 100000 200000<br>**----- End of picture text -----**<br> **3** ©June 2011 Littelfuse www.littelfuse.com **POWR-GARD[® ] Fuse Datasheet** UL Class CC ## **Peak Let-Thru Curve KLKR** **==> picture [540 x 584] intentionally omitted <==** **----- Start of picture text -----**<br> 1000000<br>100000<br>10000<br>30 A<br>25 A<br>20 A<br>15 A<br>12 A<br>1000<br>100<br>AVAILABLE FAULT CURRENT<br>SYMMETRICAL R. M. S. AMPERES<br>PEAK LET-THRU IN AMPERES<br>100 1000 10000 100000 200000<br>**----- End of picture text -----**<br> **4** ©June 2011 Littelfuse www.littelfuse.com
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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