NLS Series - 600 V - UL Class K5 "One-Time" Fuses

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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.

NLS series fuses provide low cost protection for general-purpose feeder and branch circuits when available short circuit currents are less than 50,000 amperes. They replace all Class H fuses which have only a 10,000 ampere interrupting rating. They are suitable for use in many residential and smaller commercial and industrial applications.

NLKP series fuses are Canadian “Code” fuses specifically designed to meet Canadian Electrical Code Type P fuse requirements for residential use. They have a 10,000 ampere interrupting rating. However, to obtain the added benefits of time-delay, current-limitation, and higher interrupting rating, consider the use of POWR-PRO™ IDSR Indicator™ fuses for circuits between 250 and 600 volts. The user gets all the benefits of time-delay RK5 fuses plus the added benefits of a n indicating fuse that tells when it has opened. Complete information on these fuses may be found in the POWR-PRO™ section of this catalog. For circuits up to 250 volts, see FLNR fuses in this section of the catalog.

  • General purpose residential and commercial circuits with little or no motor load. Resistive heating loads
  • For use in applications where lowest initial cost is the major consideration.
  • 50,000 A.I.R., Class K5 — Adequate interrupting capacity for residences and many smaller facilities.

Access specifications, certifications, check availability and order parts below

Catalog #Amps (A)Interrupting RatingOpeningVAC (V)VDC (V)SizeStockSamplesCompare
NLS001120 kA @ 600 VdcFast-Acting (F)600600Industrial CartridgeCheckOrder
NLS002220 kA @ 600 VdcFast-Acting (F)600600Industrial CartridgeCheckOrder
NLS003320 kA @ 600 VdcFast-Acting (F)600600Industrial CartridgeCheckOrder
NLS004420 kA @ 600 VdcFast-Acting (F)600600Industrial CartridgeCheckOrder
NLS005520 kA @ 600 VdcFast-Acting (F)600600Industrial CartridgeCheckOrder
NLS006620 kA @ 600 VdcFast-Acting (F)600600Industrial CartridgeCheckOrder
NLS007720 kA @ 600 VdcFast-Acting (F)600600Industrial CartridgeCheckOrder
NLS008820 kA @ 500 VdcFast-Acting (F)600500Industrial CartridgeCheckOrder
NLS0101020 kA @ 500 VdcFast-Acting (F)600500Industrial CartridgeCheckOrder
NLS0121220 kA @ 500 VdcFast-Acting (F)600500Industrial CartridgeCheckOrder
NLS0151520 kA @ 500 VdcFast-Acting (F)600500Industrial CartridgeCheckOrder
NLS0202020 kA @ 500 VdcFast-Acting (F)600500Industrial CartridgeCheckOrder
NLS0252520 kA @ 500 VdcFast-Acting (F)600500Industrial CartridgeCheckOrder
NLS0303020 kA @ 500 VdcFast-Acting (F)600500Industrial CartridgeCheckOrder
NLS0353520 kA @ 400 VdcFast-Acting (F)600400Industrial CartridgeCheckOrder
NLS0404020 kA @ 400 VdcFast-Acting (F)600400Industrial CartridgeCheckOrder
NLS0454520 kA @ 400 VdcFast-Acting (F)600400Industrial CartridgeCheckOrder
NLS0505020 kA @ 400 VdcFast-Acting (F)600400Industrial CartridgeCheckOrder
NLS0606020 kA @ 400 VdcFast-Acting (F)600400Industrial CartridgeCheckOrder
NLS0707050 kA @ 600 VdcFast-Acting (F)600600Knife-BladeCheckOrder
NLS0808050 kA @ 600 VdcFast-Acting (F)600600Knife-BladeCheckOrder
NLS0909050 kA @ 600 VdcFast-Acting (F)600600Knife-BladeCheckOrder
NLS10010050 kA @ 600 VdcFast-Acting (F)600600Knife-BladeCheckOrder
NLS11011050 kA @ 600 VdcFast-Acting (F)600600Knife-BladeCheckOrder
NLS12512550 kA @ 600 VdcFast-Acting (F)600600Knife-BladeCheckOrder
NLS15015050 kA @ 600 VdcFast-Acting (F)600600Knife-BladeCheckOrder
NLS17517550 kA @ 600 VdcFast-Acting (F)600600Knife-BladeCheckOrder
NLS20020050 kA @ 600 VdcFast-Acting (F)600600Knife-BladeCheckOrder
NLS22522550 kA @ 500 VdcFast-Acting (F)600500Knife-BladeCheckOrder
NLS25025050 kA @ 500 VdcFast-Acting (F)600500Knife-BladeCheckOrder
NLS30030050 kA @ 500 VdcFast-Acting (F)600500Knife-BladeCheckOrder
NLS35035050 kA @ 500 VdcFast-Acting (F)600500Knife-BladeCheckOrder
NLS40040050 kA @ 500 VdcFast-Acting (F)600500Knife-BladeCheckOrder
NLS45045050 kA @ 500 VdcFast-Acting (F)600500Knife-BladeCheckOrder
NLS50050050 kA @ 500 VdcFast-Acting (F)600500Knife-BladeCheckOrder
NLS60060050 kA @ 500 VdcFast-Acting (F)600500Knife-BladeCheckOrder

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