JLS Series - UL Class J Fast-Acting Fuses

Series: JLS
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Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

JLS series fuses provide space-saving, fast-acting overload and short-circuit protection for non-inductive loads. When used for motors or other inductive loads, the ampere rating of JLS series fuses must be increased to prevent nuisance opening on inrush currents. In such applications, JLS fuses may provide only short circuit protection. Consider using Littelfuse POWR-PRO™ JTD series time-delay fuses in such circuits.

Applications:
  • General purpose circuits with little or no motor load.
  • Resistive loads, such as resistance electric heat.
  • Loads requiring fast-acting overload protection, such as equipment containing solid-state devices.
Space Saving:
  • JLS fuse characteristics are similar to KLNR/KLSR fast-acting Class RK1, but they are much smaller.
Safety:
  • 200,000 A.I.R. — Reliable interruption of all overcurrents up to 200,000 amperes.
  • Extremely current limiting — Stops damaging short-circuit current faster than any mechanical protective device.
  • Fast-Acting — Provides fast-acting protection to equipment such as variable speed drives, rectifiers and other equipment containing surge-sensitive components.
Longer Equipment Life:
  • Current-limiting design reduces damage to equipment caused by heating and magnetic effects of short-circuit currents.
Economical:
  • Extremely current-limiting design often permits use of readily available, less costly equipment.
  • Manufacturers of equipment containing dual voltage devices can simply manufacturing and reduce inventory by standardizing on 600 volt JLS fuses and Class J fuse blocks for all AC voltage ratings.
Easy to Use:
  • 200,000 A.I.R. rating minimizes need for short-circuit calculations.

Application Spotlight

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Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)Interrupting RatingOpeningSizeStockSamplesCompare
JLS0011200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS0033200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS0066200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS01010200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS01515200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS02020200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS02525200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS03030200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS03535200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS04040200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS04545200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS05050200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS06060200 kA @ 600 VacFast-Acting (F)Industrial CartridgeCheckOrder
JLS07070200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS08080200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS09090200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS100100200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS110110200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS125125200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS150150200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS175175200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS200200200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS225225200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS250250200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS300300200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS350350200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS400400200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS450450200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS500500200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder
JLS600600200 kA @ 600 VacFast-Acting (F)Knife-BladeCheckOrder

  • Showing 2 items
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
0JLS001.T FUS 600V F/A CLASS J 1A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS003.T FUS 600V F/A CLASS J 3A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS006.T FUS 600V F/A CLASS J 6A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS010.T FUS 600V F/A CLASS J 10A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS015.T FUS 600V F/A CLASS J 15A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS020.T FUS 600V F/A CLASS J 20A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS025.T FUS 600V F/A CLASS J 25A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS030.T FUS 600V F/A CLASS J 30A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS035.T FUS 600V F/A CLASS J 35A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS040.T FUS 600V F/A CLASS J 40A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS045.T FUS 600V F/A CLASS J 45A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS050.T FUS 600V F/A CLASS J 50A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS060.T FUS 600V F/A CLASS J 60A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS070.V FUS 600V F/A CLASS J 70A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS080.V FUS 600V F/A CLASS J 80A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS090.V FUS 600V F/A CLASS J 90A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS100.V FUS 600V F/A CLASS J 100A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS110.X FUS 600V F/A CLASS J 110A RoHS No 03/15/2016 PbFree No 03/15/2016 No
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0JLS125.X FUS 600V F/A CLASS J 125A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS150.X FUS 600V F/A CLASS J 150A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS175.X FUS 600V F/A CLASS J 175A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS200.X FUS 600V F/A CLASS J 200A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS225.X FUS 600V F/A CLASS J 225A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS250.X FUS 600V F/A CLASS J 250A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS300.X FUS 600V F/A CLASS J 300A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS350.X FUS 600V F/A CLASS J 350A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS400.X FUS 600V F/A CLASS J 400A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS450.X FUS 600V F/A CLASS J 450A RoHS No 03/15/2016 PbFree No Yes
03/15/2016
0JLS500.X FUS 600V F/A CLASS J 500A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
0JLS600.X FUS 600V F/A CLASS J 600A RoHS No 03/15/2016 PbFree No 03/15/2016 No
03/15/2016
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