Technical Application Guide
CONDENSED CROSS REFERENCE
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 specifications 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).
Technical
11
Competitor
Littelfuse
Competitor
Littelfuse
Competitor
Littelfuse
Competitor
Littelfuse
10KOTN
10KOTS
50KOTN
50KOTS
A013F
A015F
A015R
A025F
A050F
A060F
A070F
A13X
A25X
A2D-R
A2K-R
A3T
A4BQ
A4BT
A4BY
A4J
A50P (type 1 & 4)
A60X
A6D-R
A6K-R
A6T
A70P
ABC
ACK
AG
AGA
AGC
AGU (1-30A)
AGW
AJT
AMG
AMI
ANL
ANN
ASO
ATC
AT-DE
ATDR
ATM (Mersen)
ATMR
ATQ
ATQR
AX
BAF
BAN
BBS
C519
C520
NLN
NLS
NLN
NLS
L15S
L15S
L15S
L25S
L50S
L60S
L70S
L15S
L25S †
LLNRK §
KLNR
JLLN
KLPC
KLLU or KLPC
KLPC or KLLU
JLS
L50S
L60S
LLSRK_ID §
KLSR
JLLS
L70S
314
CCK
SLC
AGA
312
BLN
AGW
JTD_ID
MEG
MID
CNL §
CNN_E
SPF
ATO (287)
FLNR_ID ‡
CCMR §
KLKD
KLKR §
FLQ
KLDR
481
BLF
BLN
BLS
229
225
CJ
CJS
CLF
CLL
CLU
CM
CRN-R
CRS-R
CTN-R
CTS-R
DCT
EBS
ECNR
ECSR
ERN
ERS
FNA
FNM
FNQ
FNQ-R
FRN-R
FRS-R
FWA
FWH
FWP
FWX
GDA
GDB
GDC
GDL
GEB
GEBN
GFA
GFN
GGC
GGM
GLR
GMA
GMD
GMT
HCLR
HCTR
HEB
HET
HLR
HP10M
HP6J
JDL
JFL
JHC
JJN
JJS
JLS
JLS
KLPC or KLLU
KLLU or KLPC
KLLU or KLPC
BLF
FLNR_ID ‡
FLSR_ID
KLNR
KLSR
SPF †
BLS
FLNR_ID ‡
FLSR_ID
FLNR +
FLSR +
FLA
FLM
FLQ
KLDR
FLNR_ID ‡
FLSR_ID
L15S † §
L50S † §
L70S * §
L25S * †
216
217
218
313
LEB
LET
251
FLA
312
235
LGR
235
239
481
KLKR
KLDR
LEB
LET
LHR
SPF
SPFJ *
JTD_ID
JLS
JTD_ID
JLLN
JLLS
JKS
KAA
KAB
KAC
KBH
KLM
KLU
KN
KON
KOS
KRP-C
KS
KTK
KTKR
KTNR
KTSR
KTU 601-2000A
KTU 2500-6000A
LCL
LCU
LENRK
LESRK
LKU
LONRK
LOSRK
LPCC
LPJ (SP)
LPNRK (SP)
LPSRK (SP)
MCL
MCR
MDA
MDL
MDQ
MDV
MDX
MEN
MEQ
MID
MOF
MOL
MTH
NCLR
NON
JLS
L15S
L25S
KLC
L50S
KLKD
KLLU or KLPC
KLNR
NLN
NLS
KLPC
KLSR
KLK
KLKR
KLNR
KLSR
LDC
KLPC
KLPC or KLLU
KLPC or KLLU
LLNRK
LLSRK_ID
KLLU
LLNRK
LLSRK_ID
CCMR
JTD_ID
LLNRK §
LLSRK_ID
KLK
251
326
313
313
315
313
FLM
FLQ
FLA
BLN
BLF
312
KLNR
NLN
NOS
NRN
NRN (15-60A)
NRS
OT
OTM
OTN
OTS
PV-(1-30)A10F
REN
RES
RF
RFA
RFC
RFL (750V)
RFN (Mersen)
RFS (Mersen)
RFV
RHN
RHS
S
SA
SC
SEC
SF13X
SF25X
SF50P
SF60X
SF70P
SFE
SL
T
TJN
TJS
TL
TR
TRM
TRN-R
TRS
TRS-R
XL25X
XL50F
XL70F
NLS
NLN
NLKP
NLS
NLN
BLF or BLN
NLN
NLS
SPF
FLNR +
FLSR +
FLNR +
L15S
KLC
L70S (700 V)
FLNR +
FLSR +
L50S
KLNR
KLSR
SOO
SAO
SLC
SLC
L15S
L25S
L50S
L60S
L70S
SFE
SLO
TOO
JLLN
JLLS
TLO
FLNR_ID ‡ / §
FLM
FLNR_ID ‡ / §
FLSR_ID §
FLSR_ID §
L25S
L50S *
L70S *
littelfuse.com
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 specific 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.
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