LFH Series - Class H Indicating Fuse Blocks

Series: LFH
LFH Fuse Blocks
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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

The new Littelfuse Class H blocks offer many advantages over previous generations that are noted in the features and benefits section. Class H and Class R fuse blocks are dimensionally the same, but Class R blocks incorporate a rejection feature, which only allows Class R fuses to be inserted.

Features & Benefits

  • Indication offered on most 250V and 600V versions
  • DIN Rail releasable for all non-knife blade style fuses
  • Only one hand is required to release from DIN Rail (lock open lock closed)
  • Universal mounting holes make for easy replacement
  • Clip designs maximize electrical contact and minimize heat rise
  • Reinforcing clips are standard on all Class H fuse blocks rated 100 amp and  higher.

Note: For reinforcing clips on Class H blocks rated 30-60 amp, add "R" suffix to connector type

Product Literature

POWR-GARD Fuse Catalog - Download

Access specifications, certifications, check availability and order parts below

Catalog #Fuse TypeIndicatingStockSamplesCompare
LFH250301CMidgetNoCheckOrder
LFH250301PClass H/KNoCheckOrder
LFH250301SClass H/KNoCheckOrder
LFH250302CClass H/KNoCheckOrder
LFH250302PClass H/KNoCheckOrder
LFH250302SClass H/KNoCheckOrder
LFH250303CClass H/KNoCheckOrder
LFH250303PClass H/KNoCheckOrder
LFH250303SClass H/KNoCheckOrder
LFH250601CClass H/KNoCheckOrder
LFH250601CIDClass H/KNoCheckOrder
LFH250602CClass H/KNoCheckOrder
LFH250602CIDClass H/KYesCheckOrder
LFH250603CClass H/KNoCheckOrder
LFH250603CIDClass H/KYesCheckOrder
LFH251001CClass H/KNoCheckOrder
LFH251001CIDClass H/KYesCheckOrder
LFH251003CClass H/KNoCheckOrder
LFH251003CIDClass H/KYesCheckOrder
LFH252001CClass H/KYesCheckOrder
LFH252003CClass H/KNoCheckOrder
LFH254001CClass H/KNoCheckOrder
LFH254003CClass H/KNoCheckOrder
LFH256001CClass H/KNoCheckOrder
LFH256003CClass H/KNoCheckOrder
LFH600301CClass H/KNoCheckOrder
LFH600301CIDClass H/KNoCheckOrder
LFH600301PClass H/KNoCheckOrder
LFH600301PIDClass H/KYesCheckOrder
LFH600301SClass H/KNoCheckOrder
LFH600301SIDClass H/KYesCheckOrder
LFH600302CClass H/KNoCheckOrder
LFH600302CIDClass H/KYesCheckOrder
LFH600302PClass H/KNoCheckOrder
LFH600302PIDClass H/KYesCheckOrder
LFH600302SClass H/KNoCheckOrder
LFH600302SIDClass H/KYesCheckOrder
LFH600303CClass H/KNoCheckOrder
LFH600303CIDClass H/KYesCheckOrder
LFH600303PClass H/KNoCheckOrder
LFH600303PIDClass H/KYesCheckOrder
LFH600303SClass H/KNoCheckOrder
LFH600303SIDClass H/KYesCheckOrder
LFH600601CClass H/KNoCheckOrder
LFH600601CIDClass H/KYesCheckOrder
LFH600602CClass H/KNoCheckOrder
LFH600602CIDClass H/KYesCheckOrder
LFH600603CClass H/KYesCheckOrder
LFH600603CIDClass H/KYesCheckOrder
LFH601001CClass H/KNoCheckOrder
LFH601001CIDClass H/KYesCheckOrder
LFH601003CClass HNoCheckOrder
LFH601003CIDClass H/KYesCheckOrder
LFH602001CClass H/KYesCheckOrder
LFH602003CClass H/KNoCheckOrder
LFH604001CClass H/KNoCheckOrder
LFH604003CClass H/KNoCheckOrder
LFH606001CClass H/KNoCheckOrder
LFH606003CClass H/KNoCheckOrder
Catalog # Certificates
Sorting icon
LFH250301C CSAiconculiconULicon
LFH250301P CSAiconculiconULicon
LFH250301S CSAiconculiconULicon
LFH250302C CSAiconculiconULicon
LFH250302P CSAiconculiconULicon
LFH250302S CSAiconculiconULicon
LFH250303C CSAiconculiconULicon
LFH250303P CSAiconculiconULicon
LFH250303S CSAiconculiconULicon
LFH250601CID CSAiconculiconULicon
LFH250602CID CSAiconculiconULicon
LFH250603CID CSAiconculiconULicon
LFH251001CID CSAiconculiconULicon
LFH251003CID CSAiconculiconULicon
LFH252001C CSAiconculiconULicon
LFH252003C CSAiconculiconULicon
LFH254001C CSAiconculiconULicon
LFH254003C CSAiconculiconULicon
LFH256001C CSAiconculiconULicon
LFH256003C CSAiconculiconULicon
LFH600301CID CSAiconculiconULicon
LFH600301PID CSAiconculiconULicon
LFH600301SID CSAiconculiconULicon
LFH600302CID CSAiconculiconULicon
LFH600302PID CSAiconculiconULicon
LFH600302SID CSAiconculiconULicon
LFH600303CID CSAiconculiconULicon
LFH600303PID CSAiconculiconULicon
LFH600303SID CSAiconculiconULicon
LFH600601CID CSAiconculiconULicon
LFH600602CID CSAiconculiconULicon
LFH600603CID CSAiconculiconULicon
LFH601001CID CSAiconculiconULicon
LFH601003CID CSAiconculiconULicon
LFH602001C CSAiconculiconULicon
LFH602003C CSAiconculiconULicon
LFH604001C CSAiconculiconULicon
LFH604003C CSAiconculiconULicon
LFH606001C CSAiconculiconULicon
LFH606003C CSAiconculiconULicon

pdficon LFR LFH Datasheet

icon-request-icon LFH601001CID 3D Model IGS

icon-request-icon LFH254003C 3D Model IGS

icon-request-icon LFH60100FBC 3D Model STP

icon-request-icon LFH250302C 3D Model IGS

icon-request-icon LFH60030FBC 3D Model STP

icon-request-icon LFH250301C 3D Model IGS

icon-request-icon LFH606003C 3D Model IGS

icon-request-icon LFH250302P 3D Model IGS

icon-request-icon LFH604003C 3D Model IGS

icon-request-icon LFH600602CID 3D Model IGS

icon-request-icon LFH252001C 3D Model IGS

icon-request-icon LFH250303C 3D Model IGS

icon-request-icon LFH250302S 3D Model IGS

icon-request-icon LFH600301SID 3D Model IGS

icon-request-icon LFH600302PID 3D Model IGS

icon-request-icon LFH600301PID 3D Model IGS

icon-request-icon LFH600303CID 3D Model IGS

icon-request-icon LFH250301P 3D Model IGS

icon-request-icon LFH250603CID 3D Model IGS

icon-request-icon LFH25100FBC 3D Model STP

icon-request-icon LFH600302CID 3D Model IGS

icon-request-icon LFH25030FBC 3D Model STP

icon-request-icon LFH250303S 3D Model IGS

icon-request-icon LFH251003CID 3D Model IGS

icon-request-icon LFH606001C 3D Model IGS

icon-request-icon LFH250601CID 3D Model IGS

icon-request-icon LFH600601CID 3D Model IGS

icon-request-icon LFH600603CID 3D Model IGS

icon-request-icon LFH602003C 3D Model IGS

icon-request-icon LFH600303SID 3D Model IGS

icon-request-icon LFH254001C 3D Model IGS

icon-request-icon LFH250301S 3D Model IGS

icon-request-icon LFH251001CID 3D Model IGS

icon-request-icon LFH25060FBC 3D Model STP

icon-request-icon LFH604001C 3D Model IGS

icon-request-icon LFH601003CID 3D Model IGS

icon-request-icon LFH602001C 3D Model IGS

icon-request-icon LFH256003C 3D Model IGS

icon-request-icon LFH252003C 3D Model IGS

icon-request-icon LFH250303P 3D Model IGS

icon-request-icon LFH60060FBC 3D Model STP

icon-request-icon LFH600302SID 3D Model IGS

icon-request-icon LFH250602CID 3D Model IGS

icon-request-icon LFH600301CID 3D Model IGS

icon-request-icon LFH600303PID 3D Model IGS

icon-request-icon LFH256001C 3D Model IGS

CAD-DWG-icon OL-LFH25030-CSeries CAD Drawing

CAD-DWG-icon OL-LFH60600Series CAD Drawing

CAD-DWG-icon OL-LFH25600Series CAD Drawing


  • Showing 4 items
    • NLS
      600 V - UL Class K5 "One-Time" Fuses

    • Amps (A): 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70 more

    • Interrupting Rating: 20 kA @ 400 Vdc, 20 kA @ 500 Vdc, 20 kA @ 600 Vdc, 50 kA @ 500 Vdc, 50 kA @ 600 Vdc

    • Opening: Fast-Acting (F)

    • NLN
      250 V - UL Class K5 "One-Time" Fuses

    • Amps (A): 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70 more

    • Interrupting Rating: 20 kA @ 250 Vdc

    • Opening: Fast-Acting (F)

Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
LFH250301C 250V CLASS H BLOCK 30A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250301P 250V CLASS H BLOCK 30A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250301S 250V CLASS H BLOCK 30A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250302C 250V CLASS H BLOCK 30A 2 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250302P 250V CLASS H BLOCK 30A 2 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250302S 250V CLASS H BLOCK 30A 2 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250303C 250V CLASS H BLOCK 30A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250303P 250V CLASS H BLOCK 30A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250303S 250V CLASS H BLOCK 30A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250601C 250V CLASS H BLOCK 60A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250601CID 250V CLASS H BLOCK 60A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250602C 250V CLASS H BLOCK 60A 2 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250602CID 250V CLASS H BLOCK 60A 2 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250603C 250V CLASS H BLOCK 60A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH250603CID 250V CLASS H BLOCK 60A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH251001C 250V CLASS H BLOCK 100A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH251001CID 250V CLASS H BLOCK 100A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH251003C 250V CLASS H BLOCK 100A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH251003CID 250V CLASS H BLOCK 100A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH252001C 250V CLASS H BLOCK 200A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH252003C 250V CLASS H BLOCK 200A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH254001C 250V CLASS H BLOCK 400A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH254003C 250V CLASS H BLOCK 400A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH256001C 250V CLASS H BLOCK 600A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH256003C 250V CLASS H BLOCK 600A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 CoC_RoHS9_LFH256003C REACH205_Declaration_Contain-_LFH256003C No
07/10/2012		 Contains
LFH600301CID 600V CLASS H BLOCK 30A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600301PID 600V CLASS H BLOCK 30A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600301SID 600V CLASS H BLOCK 30A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600302CID 600V CLASS H BLOCK 30A 2 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600302PID 600V CLASS H BLOCK 30A 2 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600302SID 600V CLASS H BLOCK 30A 2 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600303CID 600V CLASS H BLOCK 30A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600303PID 600V CLASS H BLOCK 30A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600303SID 600V CLASS H BLOCK 30A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600601CID 600V CLASS H BLOCK 60A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600602CID 600V CLASS H BLOCK 60A 2 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH600603CID 600V CLASS H BLOCK 60A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH601001CID 600V CLASS H BLOCK 100A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH601003CID 600V CLASS H BLOCK 100A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH602001C 600V CLASS H BLOCK 200A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH602003C 600V CLASS H BLOCK 200A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH604001C 600V CLASS H BLOCK 400A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH604003C 600V CLASS H BLOCK 400A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH606001C 600V CLASS H BLOCK 600A 1 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
LFH606003C 600V CLASS H BLOCK 600A 3 POLE RoHS No 07/10/2012 PbFree No 07/10/2012 No
07/10/2012
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please complete the Product Environmental Information Request Form.