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Series: FLSR
FLSR Series - UL Class RK5 Dual-Element Time-Delay Fuse
Technology: Fuses
Littelfuse FLSR series fuses have been the superior UL Class RK5 dual-element time-delay fuses, and are the most widely used class of fuses. FLSR series fuses provide excellent protection for all types of circuits especially those containing motors. However, users and specifiers should consider the significant benefits offered by Indicator fuses.

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
Safety:
  • 200,000 A.I.R.- Reliable interruption of all overcurrents up to 200,000 amperes.
  • Faster acting short circuit protection than any non-current limiting mechanical protective device.
Reliability:
  • Accurate and reliable - Automated, precision manufactured and assembled parts ensure accurate, consistent response to overloads and short circuits.


Electrical Characteristics

Access specifications, certifications, check availability and order parts below:

Check distributor stock availability by clicking on the [CHECK] link. View certification PDF files by clicking on the certification logo. View the part details by clicking on the part number. To order sample parts, click on the [ADD] link. Click on the 'Key' button to view definitions for each column header. Sort parts by clicking on the column you wish to sort by.


CatalogNo Certs. Amps (A) VAC (V) VDC (V) IR Stock Sample
Cart
FLSR.100 0.1 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR.150 0.15 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR.200 0.2 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR.250 0.25 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR.300 0.3 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR.400 0.4 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR.500 0.5 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR.600 0.6 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR.800 0.8 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR001. 1 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR002. 2 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR003. 3 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR004. 4 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR005. 5 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR006. 6 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR007. 7 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR008. 8 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR009. 9 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR01.4 1.4 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR01.5 1.5 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR01.6 1.6 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR01.8 1.8 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR010. 10 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR012. 12 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR015. 15 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR02.5 2.5 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR020. 20 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR025. 25 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR03.2 3.2 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR03.5 3.5 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR030. 30 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR035. 35 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR04.5 4.5 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR040. 40 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR045. 45 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR05.6 5.6 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR050. 50 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR060. 60 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR07.5 7.5 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR070. 70 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR075. 75 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR080. 80 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR090. 90 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR1.12 1.12 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR1.25 1.25 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR100. 100 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR110. 110 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR125. 125 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR150. 150 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR17.5 17.5 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR175. 175 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR2.25 2.25 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR200. 200 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR225. 225 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR250. 250 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR300. 300 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR350. 350 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR400. 400 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR450. 450 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR500. 500 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR6.25 6.25 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]
FLSR600. 600 600 300 20000A@300VDC
200000A@600VAC 		[Check] [Add]