Littelfuse.com/Fuses

POWR-GARD

FUSE

Selection Guide

UL CLASS

LITTELFUSE

SERIES

OVERLOAD

CHARACTERISTICS

AC RATINGS DC RATINGS

RECOMMENDED

ACCESSORIES

VOLTAGE

(VOLTS)

CURRENT

(AMPERES)

INTERRUPTING

(AMPERES)

VOLTAGE

(VOLTS)

CURRENT

(AMPERES)

INTERRUPTING

(AMPERES)

KLPC Time-Delay 600 200–6000 200 K/300 K* 480 200–6000 20,000*

–

KLLU Time-Delay 600 601–4000 200,000 300 601–4000 20,000*

LDC Fast-Acting 600 150–2000 200,000 600 150–2000 50,000

RK1

LLNRK Time-Delay 250 0.1–600

200 K/300 K*

125 0.1–600

20,000*

LFR25

LLSRK_ID Time-Delay 600 0.1–600 300 0.1–600 LFR60

LLSRK Time-Delay 600 0.1–600 300 0.1–600 LFR60

KLNR Fast-Acting 250 1–600

200,000

125 1–600 LFR25

KLSR Fast-Acting 600 1–600

250

300

1–30

35–600

LFR60

RK5

FLNR_ID

Time-Delay

250 35–600

200 K/300 K*

125 35–600

20,000

LFR25

FLNR 250 0.1–600 125 0.1–600

FLSR_ID 600 0.1–600 300 0.1–600

LFR60

FLSR 600 0.1–600 300 0.1–600

IDSR 600 0.1–600 600 0.1–600

JTD_ID Time-Delay 600 0.8–600

200 K/300 K*

300 0.8–100

20,000*

LFJ60 • LFPSJ

JTD Time-Delay 600 0.8–600 500 110–600

JLS Fast-Acting 600 1–600 200,000 – – –

JLLN

Fast-Acting

300 1–1200

200,000

160

125

1–60

70–1200

20 K (1–30 A)*

20 K (35–1200 A)

LFT30 • LSCR

(700–800 A)

JLLS 600 1–1200 300 1–1200 20 K (1–1200 A)*

LFT60 • LSCR

(700–800 A)

CCMR Time-Delay 600 0.2–30 200 K/300 K*

300

500

2/10–10

12–30

20,000*

L60030C

LFPSC

LPSC • 571

572

LEC • LEY

KLDR Time-Delay 600 0.1–30 200,000 300 0.1–30

KLKR Fast-Acting 600 0.1–30 200,000 300 0.1–30

CCMR Time-Delay 600 35–60 200 K/300 K* 250 35–60 20,000* LFC60060

SLC Time-Lag

600

480

0.5–20

25–60

100,000 170 0.5–60 10,000*

LFG600 (½–20 A)

LFG480 (25–60 A)

NLN

Fast-Acting

250 1–600

50,000

250 1–600

20 K (1–60 A)

50 K (70–600 A)

LFH25

NLS 600 1–600

600

500

400

600

500

1–7

8–30

35–60

70–200

225–600

20 K (1–60 A)

50 K (70–600 A)

LFH60

* Littelfuse self-certied

FUSE CLASS AND SELECTION CHART

Littelfuse.com/Fuses

POWR-GARD

FUSE

Selection Guide

UL CLASS

LITTELFUSE

SERIES

OVERLOAD

CHARACTERISTICS

AC RATINGS DC RATINGS

RECOMMENDED

ACCESSORIES

VOLTAGE

(VOLTS)

CURRENT

(AMPERES)

INTERRUPTING

(AMPERES)

VOLTAGE

(VOLTS)

CURRENT

(AMPERES)

INTERRUPTING

(AMPERES)

Midget

(Supplementary)

BLF Fast-Acting

250

125

0.5–15

20–30

10,000 – – –

L60030M

571 • 572

LEB • LEX •

LPSM

BLN Fast-Acting 250 1–30 10,000 – – –

BLS Fast-Acting

600

250

0.2–5

6–10

10,000 – – –

FLA Time-Delay 125 0.1–30 10,000 – – –

FLM Time-Delay 250 0.1–30 10,000 125 0.1–30 10,000*

FLQ Time-Delay 500 0.1–30 10,000 300 0.1–30 10,000*

KLK Fast-Acting 600 0.1–30 100 K/200 K* 500 0.1–30 50,000

KLKD Fast-Acting 600 0.1–30 100 K/200 K* 600 0.1–30 50,000

KLQ Time-Delay 600 1–6 10,000 – – –

FLU Fast-Acting 1000

0.44/

10,000

20,000

1000

0.44

10,000

20,000

LPHV

Solar

SPF

Solar (gPV)

– – – 1000 1–30

20,000 (1A–20 A)

50,000 (25–30 A)

LPHV

SPFJ 600 125–450 200,000 1000 70–450

20 K (70–200 A)

10 K (250–400 A)

20 K (450 A)

LFJ10 • LSCR

SPFI – – – 1000 2–30 20,000 Not Required

SPNH – – – 1500 50–400 30,000 LFNH

SPXV – – – 1500 1–60

50 K (1–20 A)*

50 K (25–30 A) SPXV-M

LFPXV

50 K (35–60 A) LFXV150

SPXI – – – 1500 1–32

30 K (1–20A)

30 K (1–20 A) SPXI-B

50 K (35–50 A)

50 K (35–60 A) SPXI-B

50 K (25–32 A) SPXI-M &

SPXI-BM

Not Required

SPXC – – – 1500 1–4 50,000*

High-Speed

L15S

Very Fast-Acting

150 1–1000 100,000

150

100

1–60

70–1000

20,000* LSCR • 1LFS

L25S 250 1–800

200,000

250

200

1–200

225–800

L50QS

500

35–800 500 35–800 50,000 LSCR

L50S 10–800 450 10–800 20,000

LSCR • 1LFS

L60S 600 1–800 – – –

L70QS 700 35–800 700 35–800 50,000 LSCR

L75QS – – 750 35–800 50,000 LSCR

L70S 700 10–800 – 650 10–800 20,000 LSCR • 1LFS

PSR 500–700 40–2250 200,000 450–600 40–2250 150,000 MS3H1000C

PSR 900–1300 50–1400 100,000 800–1000 50–1400 150,000 MS7H1500C

PSX – – – 1500 80–1400 250,000 MSXL2000C

Telecom

L17T

Fast-Acting

– – –

170

70–1200

100,000

LTFD Series

TLN – – – 1–600 LFR25

TLS – – – 1–125

LTFD101

LFT30060

(cartridge)

* Littelfuse self-certied

Littelfuse.com/Fuses

POWR-GARD

FUSE

Selection Guide

CONDENSED CROSS REFERENCE GUIDE

This cross reference covers the most popular fuses for which there is a similar Littelfuse standard item. Furnished for your

convenience, it is meant to serve as a guide for product selection. We suggest you check all applicable specications before

making substitutions. For special applications, more complete information, and for fuse block and medium voltage fuse cross

referencing, visit Littelfuse.com or call 1-800-TEC-FUSE (1-800-832-3873).

COMPETITOR LITTELFUSE COMPETITOR LITTELFUSE COMPETITOR LITTELFUSE COMPETITOR LITTELFUSE

TLN NLN C519 229 JHC JTD_ID NOS NLS

10KOTS NLS C520 225 JHL LDFJ NRN NLN

50KOTN NLN CHSF L50QS JJN JLLN NRN (15-60A) NLKP

50KOTS NLS CJ JLS JJS JLLS NRS NLS

170M PSR CJS JLS JKS JLS OT NLN

A013F L15S CLF KLPC or KLLU KAA L15S OTM BLF or BLN

A015F L15S CLL KLLU or KLPC KAB L25S OTN NLN

A015R L15S CLU KLLU or KLPC KAC KLC OTS NLS

A025F L25S CM BLF KBH L50QS PC_UD PSR

A050F L50QS CRN-R FLNR_ID

‡

KLM KLKD PSC PSR

A060F L60S CRS-R FLSR_ID KLU KLLU or KLPC PV-(1-30)A10F SPF

A070F

L70QS CTN-R KLNR KN KLNR

PV-(50A-

200A)1XL15

SPNH

A13X L15S CTS-R KLSR KON NLN REN FLNR

A25X L25S

†

DCT SPF

†

KOS NLS RES FLSR

A2D-R LLNRK

DFJ LDFJ KRP-C KLPC RF FLNR

A2K-R KLNR EBS BLS KS KLSR RFA L15S

A3T JLLN ECNR FLNR_ID

‡

KTK KLK RFC KLC

A4BQ KLPC ECSR FLSR_ID KTKR KLKR RFL (750V) L70S (700 V)

A4BT KLLU or KLPC ERN FLNR

KTNR KLNR RFN (Mersen) FLNR

A4BY KLPC or KLLU ERS FLSR

KTSR KLSR RFS (Mersen) FLSR

A4J JLS FNA FLA KTU 601-2000A LDC RFV L50QS

A50P (type 1 & 4) L50QS FNM FLM KTU 2500-6000A KLPC RHN KLNR

A50QS L50QS FNQ FLQ LCL KLPC or KLLU RHS KLSR

A60X L60S FNQ-R KLDR LCU LDC S SOO

A6D-R LLSRK_ID

FRN-R FLNR_ID

‡

LENRK LLNRK SA SAO

A6K-R KLSR FRS-R FLSR_ID LESRK LLSRK_ID SC SLC

A6T JLLS FWA L15S

† §

LKU KLLU SEC SLC

A70P L70QS FWH L50QS LONRK LLNRK SF13X L15S

A70QS L70QS FWP L70QS LOSRK LLSRK_ID SF25X L25S

ABC 314 FWX L25S *

†

LPCC CCMR SF50P L50QS

ACK CCK GDA 216 LPJ (SP) JTD_ID SF60X L60S

AG SLC GDB 217 LPNRK (SP) LLNRK

SF70P L70QS

AGA AGA GDC 218 LPSRK (SP) LLSRK_ID SFE SFE

AGC 312 GDL 313 MCL KLK SL SLO

AGU (1-30A) BLN GEB LEB MCR 251 T TOO

AGW AGW GEBN LET MDA 326 TJN JLLN

AJT JTD_ID GFA 251 MDL 313 TJS JLLS

AMG MEG GFN FLA MDQ 313 TL TLO

AMI MID GGC 312 MDV 315 TR FLNR_ID

‡ / §

ANL CNL

GGM 235 MDX 313 TRM FLM

ANN CNN_E GLR LGR MEN FLM TRN-R FLNR_ID

‡ / §

ASO SPF GMA 235 MEQ FLQ TRS FLSR_ID

ATC ATO (287) GMD 239 MID FLA TRS-R FLSR_ID

ATC FLNR_ID

‡

GMT 481 MOF BLN XL25X L25S

ATDR CCMR

HCLR KLKR MOL BLF XL50F L50QS

ATM (Mersen) KLKD HCTR KLDR MTH 312 XL70F L70QS

ATMR KLKR

HEB LEB NCLR KLNR

ATQ FLQ HET LET NON NLN

ATQR KLDR HLR LHR

AX 481 HP10M SPF

A_UD PSR HP6J SPFJ *

BAF BLF HSJ LDFJ

BAN BLN JDL JTD_ID

BBS BLS JFL JLS

A fuse may be used in circuits where the fuse’s voltage rating is equal to or greater than the circuit

voltage, unless otherwise stated on the fuse. For example, the FLSR_ID indicating fuse has a voltage

rating of 75–600 volts. This fuse can be used on 600 volts, 480 volts, 250 volts, 125 volts, or 75 volts.

Never use a fuse in a circuit having a higher rated voltage than the fuse.

* Check specic mounting dimensions before substituting.

† Check characteristics and dimensions for application before substituting.

‡ For 1/10–30 amperes, order non-indicating FLNR series fuses.

§ Verify voltage for dc applications.

+ Littelfuse product is a non-renewable fuse.