©June 2011 Littelfusewww.littelfuse.com
POWR-GARD® Fuse Datasheet
UL Class RK1
1
KLNR/KLSR SeRieS FUSeS
250/600 VAC • Fast-Acting • 1-600 Amperes
ampeRe RatiNgS
1 10 40 100 250
2 12 45 110 300
3 15 50 125 350
4 20 60 150 400
5 25 70 175 450
6 30 80 200 500
8 35 90 225 600
Web Resources
TC Curves, downloadable CAD drawings and other technical
information: www.littelfuse.com/klsr
www.littelfuse.com/klnr
Recommended Fuseholders
LFR60 Series
LFR25 Series
Ordering Information
SeRieS ampeRage CataLog NUmbeR SyStem NUmbeR
KLSR 90 KLSR090 KLSR090.V
600 V
250 V
SeRieS ampeRage CataLog NUmbeR SyStem NUmbeR
KLNR 90 KLNR090 KLNR090.V
Description
KLSR/KLNR fuses are an economical single element design
providing the safety of an RK1 fuse.
Applications
• Resistance heaters
• Lighting circuits
• Non-inductive loads
Features/Benefits
• Extremely Current-Limiting
• Indicating and DIN mount fuseholders available
Specifications
Voltage Ratings: AC: 250 V (KLNR); 600 V (KLSR)
DC: 125 V (1 – 600 A KLNR);
250 V (1 – 30 A KLSR);
300 V (35 – 600 A KLSR).
Interrupting Ratings: AC: 200 kA rms symmetrical
DC: 20 kA
Ampere Range: 1 – 600 A
Approvals: AC: Standard 248-12, Class RK1
UL Listed (File No. E81895)
CSA Certified (File No. LR29862)
DC: Littelfuse self-certified
©June 2011 Littelfusewww.littelfuse.com
POWR-GARD® Fuse Datasheet
UL Class RK1
2
05549002
Peak Let-Thru Curve KLSR
