Image not available
Illustrative purposes only
FLSR015.TXID
FUSE, 15A, 600V, TIME DELAY
⚠️ 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
- Fuse Current: 15A
- Product Range: FLSR_ID Series
- Fuse Size Metric: 20.6mm x 127mm
- Fuse Size Imperial: 13/16" x 5"
- Voltage Rating VAC: 600VAC
- Voltage Rating VDC: 300VDC
- Blow Characteristic: Time Delay
| Delivery and price | |
|---|---|
| Units per pack | 1000 |
| Price | 9.54 € |
| Current stock | 10+ |
| Lead time | 30 days |
Datasheet
**General Purpose Fuses** ## **FLNR_ID/FLSR_ID Indicator[®] Class RK5 Fuses** ## **250/600 VAC • Dual-Element, Time Delay • 1/10 – 600 Amperes** ## _**Applications**_ Service entrance switches Switchboard main and feeder switches Motor control center mains and motor branch circuits Individual fused combination motor controllers Distribution panelboards Industrial control panels Protection of fully rated panelboards and loadcenters All general purpose circuits ## _**Features/Benefits**_ - Reduce Downtime — A glance at the indicating window of a FLNR_ID or FLSR_ID Indicator fuse pinpoints open fuses. If the indicating strip is black, the fuse has opened. It’s that simple. - Reduce Nuisance Opening — FLNR_ID and FLSR_ID Indicator fuses have superior time-delay and cycling characteristics which can lengthen fuse life and decrease needless opening. - Reduce Fuse Inventory — Because FLNR_ID and FLSR_ID Indicator fuses have superior performance characteristics, they can be used on a variety of applications, thus decreasing fuse inventory. - Reduce Equipment Damage — FLNR_ID and FLSR_ID Indicator fuses have superior overload and short-circuit protection which can reduce equipment damage. Littelfuse FLNR_ID/FLSR_ID Indicator fuses provide blown fuse indication at a glance. The patented state-of-the-art solid state design provides maximum reliability and superior performance characteristics in a true dual-element design. The use of Indicator fuses reduces downtime and nuisance openings, increases safety, and can save thousands of dollars in lost production time. - Reduce Accidents — The FLNR_ID and FLSR_ID Indicator fuses improve safety by minimizing exposure to live circuits. Unlike other forms of blown fuse indication, it doesn’t matter if the power is on or off. No second guessing whether a light means a fuse is good or bad, and no current going across a blown fuse to power a lighted accessory. ## _**Specifications**_ ## _**Ampere Ratings**_ **Voltage Ratings:** AC: 250 Volts (FLNR_ID); 600 Volts (FLSR_ID) DC: 125 Volts (FLNR[1] ⁄10 – 30A); 125 Volts (FLNR_ID 35 – 600A); 300 Volts (FLSR_ID) **Interrupting Ratings:** AC: 200,000 amperes rms symmetrical 300,000 amperes rms symmetrical (Littelfuse self-certified) 1⁄10 – 600 amperes Standard 248-12, Class RK5 UL Listed (File No: E81895) CSA Certified (File No: LR29862) MSHA 300 Volt Listing (FLSR_ID) QPL: Federal Specification WF-1814 **Ampere Range: Approvals:** |1⁄10**|6⁄10|18⁄10|4|8|30|80|225| |---|---|---|---|---|---|---|---| |1⁄8|8⁄10|2|41⁄2|9|35|90|250| |15⁄100|1|21⁄4|5|10|40|100|300| |2⁄10|11⁄8|21⁄2|56⁄10|12|45|110|350| |1⁄4|11⁄4|28⁄10|6|15|50|125|400| |3⁄10|14⁄10|3|61⁄4|171⁄2|60|150|450| |4⁄10|11⁄2|32⁄10|7|20|70|175|500| |1⁄2|16⁄10|31⁄2|71⁄2|25|75*|200|600| *FLSR_ID only **FLNR only Example part number (series & amperage): FLSR100ID _NOTE: For[1] ⁄10 – 30 ampere 250 volt fuses, order non-indicating FLNR series fuses. NOTE: All FLNR_ID fuses rated 35 – 600A are Indicator fuses. NOTE: All FLSR_ID fuses rated 1 amp and above are Indicator fuses._ ## _**Recommended Fuse Blocks**_ LR250 series (for FLNR_ID series fuses) LR600 series (for FLSR_ID series fuses) Refer to Blocks & Holders section of this catalog for additional information. © 2005 Littelfuse[•] POWR-GARD[™] Products Catalog w w w . l i t t e l f u s e . c o m **29** ~~Se~~ **General Purpose Fuses** ## **FLNR_ID/FLSR_ID Indicator[®] Class RK5 Fuses** ## **250/600 VAC • Dual-Element, Time Delay • 1/10 – 600 Amperes** **==> picture [422 x 76] intentionally omitted <==** **----- Start of picture text -----**<br> A A<br>F K C E<br>G B D B F D G<br>H<br>E C J<br>70-600A<br>FIG. 1 FIG. 2<br>**----- End of picture text -----**<br> **==> picture [515 x 30] intentionally omitted <==** **----- Start of picture text -----**<br> Refer To Dimensions In Inches (mm in parentheses)<br>Amperes Series<br>Fig. No. A B C D E F G H J K<br>**----- End of picture text -----**<br> |**Amperes**|**Refer To**<br>**Fig. No.**<br>**Series**|**Dimensions In Inches (mm in parentheses)**<br>**A**<br>**B**<br>**C**<br>**D**<br>**E**<br>**F**<br>**G**<br>**H**<br>**J**<br>**K**|**Dimensions In Inches (mm in parentheses)**<br>**A**<br>**B**<br>**C**<br>**D**<br>**E**<br>**F**<br>**G**<br>**H**<br>**J**<br>**K**|**Dimensions In Inches (mm in parentheses)**<br>**A**<br>**B**<br>**C**<br>**D**<br>**E**<br>**F**<br>**G**<br>**H**<br>**J**<br>**K**|**Dimensions In Inches (mm in parentheses)**<br>**A**<br>**B**<br>**C**<br>**D**<br>**E**<br>**F**<br>**G**<br>**H**<br>**J**<br>**K**|**Dimensions In Inches (mm in parentheses)**<br>**A**<br>**B**<br>**C**<br>**D**<br>**E**<br>**F**<br>**G**<br>**H**<br>**J**<br>**K**|**Dimensions In Inches (mm in parentheses)**<br>**A**<br>**B**<br>**C**<br>**D**<br>**E**<br>**F**<br>**G**<br>**H**<br>**J**<br>**K**|**Dimensions In Inches (mm in parentheses)**<br>**A**<br>**B**<br>**C**<br>**D**<br>**E**<br>**F**<br>**G**<br>**H**<br>**J**<br>**K**| |---|---|---|---|---|---|---|---|---| |||<br>||||||| |1/10– 30|1<br>FLNR<br>FLSR_ID|2(50.8)<br>1⁄2 (12.7)|1⁄2 (12.7)|9⁄16 (14.3)|5⁄64 (2.0)<br>5⁄32 (4.0)<br>3⁄|8 (9.5)<br>—|—|—| |||5(127.0)<br>3⁄4 (19.1)|5⁄8 (15.9)|13⁄16 (20.6)|3⁄32 (2.4)<br>3⁄16 (4.8)<br>5⁄8|(15.9)<br>—|—|—| |35 – 60|1<br>FLNR_ID<br>FLSR_ID|3(76.2)<br>3⁄4 (19.1)|5⁄8 (15.9)|13⁄16 (20.6)|3⁄32 (2.4)<br>3⁄16 (4.8)<br>5⁄8|(15.9)<br>—|—|—| |||51⁄2 (139.7)<br>1(25.4)|5⁄8 (15.9)|11⁄16 (27.0)|3⁄32 (2.4)<br>1⁄4 (6.4)<br>7⁄8|(22.2)<br>—|—|—| |70 – 100|2<br>FLNR_ID<br>FLSR_ID|57⁄8 (149.2)<br>1(25.4)|11⁄16 (27.0)|11⁄16 (27.0)|1⁄8 (3.2)<br>3⁄4 (19.1)<br>11⁄4|(31.8)<br>1⁄4 (6.4)|9⁄32 (7.1)|1⁄2 (12.7)| |||77⁄8 (200.0)<br>11⁄4 (31.8)|11⁄16 (27.0)|15⁄16 (33.3)|1⁄8 (3.2)<br>3⁄4 (19.1)<br>11⁄2|(38.1)<br>1⁄4 (6.4)|9⁄32 (7.1)|1⁄2 (12.7)| |110 – 200|2<br>FLNR_ID<br>FLSR_ID|71⁄8 (181.0)<br>11⁄2 (38.1)|115⁄32 (37.3)|119⁄32 (40.5)|3⁄16 (4.8)<br>11⁄8 (28.6)<br>127⁄3|2 (46.8)<br>7⁄16 (11.1)|9⁄32 (7.1)|11⁄16 (17.5)| |||9 5⁄8 (244.5)<br>13⁄4 (44.5)|115⁄32 (37.3)|127⁄32 (46.8)|3⁄16 (4.8)<br>11⁄8 (28.6)<br>23⁄3|2 (53.2)<br>7⁄16 (11.1)|9⁄32 (7.1)|11⁄16 (17.5)| |225 – 400|2<br>FLNR_ID<br>FLSR_ID|85⁄8 (219.1)<br>2(50.8)|115⁄16 (49.2)|23⁄32 (53.2)|1⁄4 (6.4)<br>15⁄8 (41.3)<br>211⁄3|2 (59.5)<br>5⁄8 (15.9)|13⁄32 (10.3)|15⁄16 (23.8)| |||115⁄8 (295.3)<br>21⁄2 (63.5)|2(50.8)|219⁄32 (65.9)|1⁄4 (6.4)<br>15⁄8 (41.3)<br>227⁄|32 (72.2)<br>5⁄8 (15.9)|13⁄32 (10.3)|15⁄16 (23.8)| |450 – 600|2<br>FLNR_ID<br>FLSR_ID|103⁄8 (263.5)<br>21⁄2 (63.5)|2 3⁄8 (60.3)|219⁄32 (65.9)|1⁄4 (6.4)<br>2(50.8)<br>227⁄|32 (72.2)<br>3⁄4 (19.1)|17⁄32 (13.5)|11⁄8 (28.6)| |||133⁄8 (339.7)<br>3(76.2)|213⁄32 (61.1)|33⁄32 (78.6)|1⁄4 (6.4)<br>2(50.8)<br>311⁄|32 (84.9)<br>3⁄4 (19.1)|17⁄32 (13.5)|11⁄8 (28.6)| **==> picture [250 x 328] intentionally omitted <==** **----- Start of picture text -----**<br> FLNR<br>1000<br>800<br>600<br>400<br>300<br>200<br>100<br>80<br>60<br>40<br>30<br>20<br>10<br>8<br>6<br>4<br>3<br>2<br>1<br>.8<br>.6<br>.4<br>.3<br>.2<br>.1<br>.08<br>.06<br>.04<br>.03<br>.02<br>.01<br>CURRENT IN AMPERES<br>2/10A 1/4A 3/10A 4/10A 1/2A 6/10A 8/10A 1A 1 1/4A1 4/10A 2A 2 1/2A 4 1/2A 5A 7A 7 1/2A 9A<br>TIME IN SECONDS<br>.1 .2 .3 .4 .6 .8 1 2 3 4 6 8 10 20 30 40 60 80 100 200 300 400 600 800 1000<br>**----- End of picture text -----**<br> **==> picture [250 x 328] intentionally omitted <==** **----- Start of picture text -----**<br> FLSR_ID<br>1000<br>800<br>600<br>400<br>300<br>200<br>100<br>80<br>60<br>40<br>30<br>20<br>10<br>8<br>6<br>4<br>3<br>2<br>.8 [1]<br>.6<br>.4<br>.3<br>.2<br>.1<br>.08<br>.06<br>.04<br>.03<br>.02<br>.01<br>CURRENT IN AMPERES<br>1A 1.25A 1.6A2A2.5A 3A 4A 6A 10A 15A 20A 25A 30A<br>TIME IN SECONDS<br>1 2 3 4 6 810 20 30 40 60 80 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000<br>**----- End of picture text -----**<br> w w w . l i t t e l f u s e . c o m © 2005 Littelfuse[•] POWR-GARD[™] Products Catalog **30** **General Purpose Fuses** ## **FLNR_ID/FLSR_ID Indicator[®] Class RK5 Fuses** ## **250/600 VAC • Dual-Element, Time Delay • 1/10 – 600 Amperes** ## **Current-Limiting Effects of FLNR_ID (250V) fuses** **==> picture [515 x 206] intentionally omitted <==** **----- Start of picture text -----**<br> Apparent RMS Symmetrical Current for Various Fuse Ratings<br>Short-Circuit Current*<br>30A 60A 100A 200A 400A 600A<br> 5,000 1,400 2,100 3,100 5,000 5,000 5,000<br> 10,000 1,550 2,500 3,900 6,500 9,500 10,000<br> 15,000 2,000 3,150 4,400 7,250 10,500 14,000<br> 20,000 2,250 3,400 5,000 8,250 12,000 16,000<br> 25,000 2,400 3,750 5,250 9,000 12,500 16,500<br> 30,000 2,550 4,100 5,600 9,500 13,500 18,000<br> 35,000 2,650 4,300 5,800 9,750 14,000 19,000<br> 40,000 2,800 4,400 6,250 10,250 15,000 20,000<br> 50,000 3,000 5,000 6,500 10,500 16,000 21,000<br> 60,000 3,200 5,250 7,000 11,500 17,000 23,000<br> 80,000 3,400 5,750 7,500 12,500 19,000 25,500<br> 100,000 3,850 6,000 8,000 13,500 21,000 27,500<br> 150,000 4,100 7,000 9,000 15,200 24,000 31,500<br> 200,000 4,300 7,500 9,750 16,500 26,000 34,000<br>**----- End of picture text -----**<br> * Prospective RMS Symmetrical Amperes Short-Circuit Current _Note: Data Derived from Peak Let-Thru Curves_ ## **Current-Limiting Effects of FLSR_ID (600V) fuses** **==> picture [515 x 206] intentionally omitted <==** **----- Start of picture text -----**<br> Apparent RMS Symmetrical Current for Various Fuse Ratings<br>Short-Circuit Current*<br>30A 60A 100A 200A 400A 600A<br> 5,000 1,250 2,100 3,200 5,000 5,000 5,000<br> 10,000 1,600 2,850 4,300 7,250 10,000 10,000<br> 15,000 1,800 3,400 5,000 8,500 13,500 15,000<br> 20,000 2,250 3,800 5,500 9,500 15,750 19,000<br> 25,000 2,450 4,100 5,700 10,250 17,000 21,000<br> 30,000 2,700 4,500 6,400 10,750 18,000 23,000<br> 35,000 2,900 4,800 6,700 11,500 19,000 24,250<br> 40,000 3,000 5,000 7,250 12,000 19,500 27,000<br> 50,000 3,400 5,250 7,750 13,000 21,000 29,000<br> 60,000 3,600 5,750 8,100 14,000 22,000 30,500<br> 80,000 3,900 6,250 9,000 15,000 24,000 33,000<br> 100,000 4,300 6,750 9,750 16,500 26,000 35,000<br> 150,000 4,500 7,600 11,100 19,000 28,000 38,000<br> 200,000 4,600 8,400 12,250 21,500 30,000 40,000<br>**----- End of picture text -----**<br> * Prospective RMS Symmetrical Amperes Short-Circuit Current _Note: Data Derived from Peak Let-Thru Curves_ w w w . l i t t e l f u s e . c o m © 2005 Littelfuse[•] POWR-GARD[™] Products Catalog **31** **General Purpose Fuses** ## **FLNR_ID/FLSR_ID Indicator[®] Class RK5 Fuses** ## **250/600 VAC • Dual-Element, Time Delay • 1/10 – 600 Amperes** **==> picture [514 x 302] intentionally omitted <==** **----- Start of picture text -----**<br> FLNR_ID<br>60A 100A 200A 400A 600A FLSR_ID 15A 30A 60A 100A 200A 400A 600A<br>1000 1000<br>800 800<br>600 600<br>400 400<br>300 300<br>200 200<br>100 100<br>80 80<br>60 60<br>40 40<br>30 30<br>20 20<br>10 10<br>8 8<br>6 6<br>4 4<br>3 3<br>2 2<br>1 1<br>.8 .8<br>.6 .6<br>.4 .4<br>.3 .3<br>.2 .2<br>.1 .1<br>.08 .08<br>.06 .06<br>.05<br>.04 .04<br>.03 .03<br>.02 .02<br>.01 .01<br>CURRENT IN AMPERES CURRENT IN AMPERES<br>TIME IN SECONDS<br>TIME IN SECONDS<br>50 60 80 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 300000 400000 600000 800000 1000000 5 6 8 10 20 30 40 60 80 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000<br>**----- End of picture text -----**<br> **==> picture [514 x 300] intentionally omitted <==** **----- Start of picture text -----**<br> FLSR_ID<br>FLNR_ID 1000000<br>1000000 800000<br>800000 600000<br>600000<br>400000<br>400000 300000<br>300000<br>200000<br>200000<br>100000<br>100000 80000 600A<br>80000 600A 60000 400A<br>60000 400A 50000 200A<br>40000<br>40000 200A 30000<br>30000 100A<br>100A 20000 60A<br>20000<br>60A<br>10000 30A<br>10000 8000<br>8000 6000 15A<br>6000 5000<br>4000<br>4000 3000<br>3000<br>2000<br>2000<br>1000<br>1000 800<br>800 600<br>600<br>400<br>400 300<br>300<br>200<br>200<br>100<br>100<br>AVAILABLE FAULT CURRENT<br>AVAILABLE FAULT CURRENT SYMMETRICAL R. M. S. AMPERES<br>SYMMETRICAL R.M.S. AMPERES<br>PEAK LET - THRU IN AMPERES<br>PEAK LET - THRU IN AMPERES<br>100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000 100 200 300 400 600 800 1000 2000 3000 4000 6000 8000 10000 20000 30000 40000 60000 80000 100000 200000<br>**----- End of picture text -----**<br> w w w . l i t t e l f u s e . c o m © 2005 Littelfuse[•] POWR-GARD[™] Products Catalog **32**
Updated at February 9, 2023
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.
About Novapart
Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.
Learn more →Stock Shortage Specialist
When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.
Request a quote →Compliant Alternatives
We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.
BOM Analysis service →