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UL Class / Voltage / Fast/Delay
UL Class: H/K5
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: NON
Littelfuse: NLN
Mersen: OT
Edison: KON
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: H/R250 Series
Reducer: Class H & K
UL Class: H/K5
Voltage: 600V
Fast/Delay: FA
Fuses: Bussman: NOS
Littelfuse: NLS
Mersen: OTS
Edison: KOS
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: H/R250 Series
Reducer: Class H & K
UL Class: G
Voltage: 480V
Fast/Delay: TD
Fuses: Bussman: SC
Littelfuse: SLC
Mersen: AG
Edison: SEC
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: BG Series
Fuseholder: Panelmount: HPS or HPF
UL Class: RK1
Voltage: 250V
Fast/Delay: TD
Fuses: Bussman: LPNRK
Littelfuse: LLNRK
Mersen: A2DR
Edison: LENRK
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: H/R250 Series
Reducer: Class R
UL Class: RK1
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: KTNR
Littelfuse: KLNR
Mersen: A2KR
Edison: NCLR
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: H/R250 Series
Reducer: Class R
UL Class: RK1
Voltage: 600V
Fast/Delay: TD
Fuses: Bussman: LPSRK
Littelfuse: LLSRK
Mersen: A6DR
Edison: LESRK
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: R600 Series
Reducer: Class R
UL Class: RK1
Voltage: 600V
Fast/Delay: FA
Fuses: Bussman: KTSR
Littelfuse: KLSRK
Mersen: A6KR
Edison: SCLR
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: R600 Series
Reducer: Class R
UL Class: RK5
Voltage: 250V
Fast/Delay: TD
Fuses: Bussman: FRNR
Littelfuse: FLNR
Mersen: TRR
Edison: ECNR
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: H/R250 Series
Reducer: Class R
UL Class: RK
Voltage: 600V
Fast/Delay: TD
Fuses: Bussman: FRSR
Littelfuse: FLSR
Mersen: TRSR
Edison: ECSR
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: R600 Series
Reducer: Class R
UL Class: RK5
Voltage: 600V
Fast/Delay: TD
Fuses: Littelfuse: IDSR
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: R600 Series
UL Class: T
Voltage: 300V
Fast/Delay: FA
Fuses: Bussman: JJN
Littelfuse: JLLN
Mersen: A3T
Edison: TJN
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: T300 Series
Reducer: None
UL Class: T
Voltage: 600V
Fast/Delay: VFA
Fuses: Bussman: JJS
Littelfuse: JLLS
Mersen: A6T
Edison: TJS
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: T600 Series
Reducer: None
UL Class: J
Voltage: 600V
Fast/Delay: FA
Fuses: Bussman: JKS
Littelfuse: JLS
Mersen: A4J
Edison: JFL
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: J600 Series
Dead Front: CH Series
Reducer: Class J
UL Class: J
Voltage: 600V
Fast/Delay: TD
Fuses: Bussman: LPJ
Littelfuse: JTD
Mersen: AJT
Edison: JDL
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: J600 Series
Dead Front: CH Series
Reducer: Class J
UL Class: Cubefuse
Voltage: 600V
Fast/Delay: FA
Fuses: Bussman: FCF
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: TCFH_N
Fuseholder: Inline: TCFH_N
UL Class: Telecom
Voltage: 600V
Fast/Delay: FA
Fuses: Bussman: FCF-RN
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: TCFH_N
Fuseholder: Inline: TCFH_N
UL Class: Telecom
Voltage: 600V
Fast/Delay: TD
Fuses: Bussman: TCF
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: TCFH_N
Fuseholder: Inline: TCFH_N
UL Class: Telecom
Voltage: 600V
Fast/Delay: TD
Fuses: Bussman: TCF-RN
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: TCFH_N
Fuseholder: Inline: TCFH_N
UL Class: L
Voltage: 600V
Fast/Delay: FA
Fuses: Bussman: KTU
Littelfuse: KLPC
Mersen: A4BY
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: 51215 or 51235
Reducer: None
UL Class: L
Voltage: 600V
Fast/Delay: TD
Fuses: Bussman: KLUM
Littelfuse: KLLU
Mersen: A4BT
Edison: LCL
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: 51215 or 51235
Reducer: None
UL Class: L
Voltage: 600V
Fast/Delay: DELAY
Fuses: Bussman: KRPC
Littelfuse: KLPC
Mersen: A4BQ
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: 51215 or 51235
Reducer: None
UL Class: CC
Voltage: 600V
Fast/Delay: FA
Fuses: Bussman: KTKR
Littelfuse: KLKR
Mersen: ATMR
Edison: HCLR
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: BC603xx
Dead Front: CHCC xDx
Fuseholder: Inline: HEZ or HEY
Panelmount: HPS or HPF
Reducer: None
UL Class: CC
Voltage: 600V
Fast/Delay: TD
Fuses: Bussman: FNQR
Littelfuse: KLDR
Mersen: ATDR
Edison: ATQR
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: BC603xx
Dead Front: CHCC xDx
Fuseholder: Inline: HEZ or HEY
Panelmount: HPS or HPF
Reducer: None
UL Class: CC
Voltage: 600V
Fast/Delay: DELAY
Fuses: Bussman: LPCC
Littelfuse: CCMR
Edison: EDCC
Dimensions: Standard: Var
Metric: Var
Fuseblock: Open Face: BC603xx
Dead Front: CHCC xDx
Fuseholder: Inline: HEZ or HEY
Panelmount: HPS or HPF
Reducer: None
UL Class: Midget
Voltage: 600/500V
Fast/Delay: FA
Fuses: Bussman: KTK
Littelfuse: KLK
Mersen: ATM
Edison: MCL
Dimensions: Standard: 13/32 x 1 1/2
Metric: 10.3mm x 38.1mm
Fuseblock: Open Face: BM Series
Dead Front: CHM Series
Fuseholder: Inline: HEB/HEX
Reducer: None
UL Class: 5AG
Voltage: 600/500V
Fast/Delay: FA
Fuses: Bussman: KLM
Littelfuse: KLKD
Mersen: A5Y
Dimensions: Standard: 13/32 x 1 1/2
Metric: 10.3mm x 38.1mm
Fuseblock: Open Face: BM Series
Dead Front: CHM Series
Fuseholder: Inline: HEB/HEX
Reducer: None
UL Class: 5AG
Voltage: 500V
Fast/Delay: TD
Fuses: Bussman: FNQ
Littelfuse: FLQ
Mersen: ATQ
Edison: MEQ
Dimensions: Standard: 13/32 x 1 1/2
Metric: 10.3mm x 38.1mm
Fuseblock: Open Face: BM Series
Dead Front: CHM Series
Fuseholder: Inline: HEB/HEX
Reducer: None
UL Class: 5AG
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: AGU
Mersen: GGU
Dimensions: Standard: 13/32 x 1 1/2
Metric: 10.3mm x 38.1mm
Fuseblock: Open Face: BM Series
Dead Front: CHM Series
Fuseholder: Inline: HEB/HEX
Reducer: None
UL Class: 5AG
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: BAF
Littelfuse: BLF
Mersen: OTM
Dimensions: Standard: 13/32 x 1 1/2
Metric: 10.3mm x 38.1mm
Fuseblock: Open Face: BM Series
Dead Front: CHM Series
Fuseholder: Inline: HEB/HEX
Reducer: None
UL Class: 5AG
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: BAN
Littelfuse: BLN
Mersen: OTM
Edison: MOL
Dimensions: Standard: 13/32 x 1 1/2
Metric: 10.3mm x 38.1mm
Fuseblock: Open Face: BM Series
Dead Front: CHM Series
Fuseholder: Inline: HEB/HEX
Reducer: None
UL Class: 5AG
Voltage: 250V
Fast/Delay: TD
Fuses: Bussman: FNA
Littelfuse: FLA
Mersen: GFN
Edison: MID
Dimensions: Standard: 13/32 x 1 1/2
Metric: 10.3mm x 38.1mm
Fuseblock: Open Face: BM Series
Dead Front: CHM Series
Fuseholder: Inline: HEB/HEX
Reducer: None
UL Class: 5AG
Voltage: 250V
Fast/Delay: TD
Fuses: Bussman: FNM
Littelfuse: FLM
Mersen: TRM
Edison: MEN
Dimensions: Standard: 13/32 x 1 1/2
Metric: 10.3mm x 38.1mm
Fuseblock: Open Face: BM Series
Dead Front: CHM Series
Fuseholder: Inline: HEB/HEX
Reducer: None
UL Class: 3AG/AB
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: AGC
Littelfuse: 312
Mersen: GGC
Dimensions: Standard: 1/4"x1 1/4"
Metric: 6.35mm x 31.75mm
Fuseholder: Inline: 1/4x1 1/4 Inline
Panelmount: HTB-xxl
Reducer: None
UL Class: 3AG/AB
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: ABC
Littelfuse: 314
Mersen: GAB
Dimensions: Standard: 1/4"x1 1/4"
Metric: 6.35mm x 31.75mm
Fuseholder: Inline: 1/4x1 1/4 Inline
Panelmount: HTB-xxl
Reducer: None
UL Class: 3AG/AB
Voltage: 250V
Fast/Delay: VFA
Fuses: Bussman: GBB
Littelfuse: 322
Mersen: K84304
Dimensions: Standard: 1/4"x1 1/4"
Metric: 6.35mm x 31.75mm
Fuseholder: Inline: 1/4x1 1/4 Inline
Panelmount: HTB-xxl
Reducer: None
UL Class: 3AG/AB
Voltage: 250V
Fast/Delay: TD
Fuses: Bussman: MDL
Littelfuse: 313
Mersen: GDL
Dimensions: Standard: 1/4"x1 1/4"
Metric: 6.35mm x 31.75mm
Fuseholder: Inline: 1/4x1 1/4 Inline
Panelmount: HTB-xxl
Reducer: None
UL Class: 3AG/AB
Voltage: 250V
Fast/Delay: TD
Fuses: Bussman: MDA
Littelfuse: 326
Mersen: GSA
Dimensions: Standard: 1/4"x1 1/4"
Metric: 6.35mm x 31.75mm
Fuseholder: Inline: 1/4x1 1/4 Inline
Panelmount: HTB-xxl
Reducer: None
UL Class: 3AG/AB
Voltage: >250V
Fast/Delay: TD
Fuses: Bussman: MDQ
Mersen: GDL
Dimensions: Standard: 1/4"x1 1/4"
Metric: 6.35mm x 31.75mm
Fuseholder: Inline: 1/4x1 1/4 Inline
Panelmount: HTB-xxl
Reducer: None
UL Class: 5×20 mm
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: GDA
Littelfuse: 216/
Mersen: GSD
Dimensions: Standard: 13/64"x25/32"
Metric: 5mm x 20mm
Fuseholder: Inline: 150274
Panelmount: HTB-xxM
Reducer: None
UL Class: 5×20 mm
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: GDB
Littelfuse: 217
Mersen: GSB
Dimensions: Standard: 13/64"x25/32"
Metric: 5mm x 20mm
Fuseholder: Inline: 150274
Panelmount: HTB-xxM
Reducer: None
UL Class: 5×20 mm
Voltage: 250V
Fast/Delay: FA
Fuses: Bussman: GMA
Littelfuse: 235
Mersen: GGM
Dimensions: Standard: 13/64"x25/32"
Metric: 5mm x 20mm
Fuseholder: Inline: 150274
Panelmount: HTB-xxM
Reducer: None
UL Class: 5×20 mm
Voltage: 250V
Fast/Delay: TD
Fuses: Bussman: GDC
Littelfuse: 218
Mersen: GDG
Dimensions: Standard: 13/64"x25/32"
Metric: 5mm x 20mm
Fuseholder: Inline: 150274
Panelmount: HTB-xxM
Reducer: None
UL Class: 5×20 mm
Voltage: 250V
Fast/Delay: TD
Fuses: Bussman: GMC
Littelfuse: 239
Mersen: GSC
Dimensions: Standard: 13/64"x25/32"
Metric: 5mm x 20mm
Fuseholder: Inline: 150274
Panelmount: HTB-xxM
Reducer: None
UL Class: SubMini
Voltage: 125/250
Fast/Delay: FA
Fuses: Littelfuse: 224
Mersen: SMG-V
Dimensions: Standard: .175"x.575"
Metric: 5mm x 15mm
Reducer: None
UL Class: 2AG
Voltage: 125/250
Fast/Delay: FA
Fuses: Bussman: C520
Littelfuse: 225
Mersen: SMG
Dimensions: Standard: .175"x.575"
Metric: 5mm x 15mm
Reducer: None
UL Class: 2AG
Voltage: 125/250/350
Fast/Delay: FA
Fuses: Bussman: C517
Dimensions: Standard: .175"x.575"
Metric: 5mm x 15mm
Reducer: None
UL Class: 2AG
Voltage: 125/250
Fast/Delay: TD
Fuses: Bussman: C519
Littelfuse: 229
Mersen: STG
Dimensions: Standard: .175"x.575"
Metric: 5mm x 15mm
Reducer: None
UL Class: 2AG
Voltage: 125/250
Fast/Delay: TD
Fuses: Bussman: C515
Littelfuse: 230
Mersen: STG-V
Dimensions: Standard: .175"x.575"
Metric: 5mm x 15mm
Reducer: None
UL Class: SC
Voltage: 48/240/600
Fast/Delay: FA
Fuses: Bussman: BBS
Littelfuse: BLS
Mersen: SBS
Dimensions: Standard: 13⁄32˝ x 1-3/8˝
Fuseblock: Open Face: BM Series
Dead Front: CHM Series
Fuseholder: Inline: HEH
Panelmount: HPF-L/HPS-L
Reducer: None
Upgradable to Class CC
UL Class: Fluke Mtr
Voltage: 1000V
Fast/Delay: FA
Fuses: Bussman: DMM-B
Littelfuse: FLU
Dimensions: Standard: .406"x1.375"
Metric: 10.31mm x 34.925 mm
Usable in Fluke Meters Only
UL Class: Form 101
Voltage: 500V
Fast/Delay: VFA
Fuses: Bussman: FWH
Littelfuse: L50S
Dimensions: Standard: Var
Fuseblock: Open Face: LSCR Series
Traditional Semiconductor
UL Class: Specialty Inline Fuse
Fast/Delay: FA
Fuses: Bussman: GLR
Littelfuse: LGR
UL Class: Specialty Inline Fuse
Fast/Delay: TD
Fuses: Bussman: GMF
Littelfuse: LMF

Fuse Cross Reference Disclaimer: The part numbers indicated by this cross reference page represent similar fuses from various manufacturers in common fuse classes. The watch word is similar, and not necessarily identical. It is your, the user’s, responsibility to review the product technical data and specifications to verify the suitability of the fuse for the intended application.