Name: LFR Series - Class R Indicating Fuse Blocks
Brand: Littelfuse Inc.

LFR Series - Class R Indicating Fuse Blocks

Series: LFR

Questions? Contact Littelfuse Support

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 and R 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 R fuse blocks

Access specifications, certifications, check availability and order parts below

Catalog #	Fuse Type	Indicating	Stock	Samples

LFR250301C	Class R	No	Check	Order
LFR250301P	Class R	No	Check	Order
LFR250301S	Class R	No	Check	Order
LFR250302C	Class R	No	Check	Order
LFR250302P	Class R	No	Check	Order
LFR250302S	Class R	No	Check	Order
LFR250303C	Class R	No	Check	Order
LFR250303P	Class R	No	Check	Order
LFR250303S	Class R	No	Check	Order
LFR250601C	Class R	No	Check	Order
LFR250601CID	Class R	Yes	Check	Order
LFR250602C	Class R	No	Check	Order
LFR250602CID	Class R	Yes	Check	Order
LFR250603C	Class R	No	Check	Order
LFR250603CID	Class R	Yes	Check	Order
LFR251001C			Check	Order
LFR251001CID	Class R	Yes	Check	Order
LFR251003C			Check	Order
LFR251003CID	Class R	Yes	Check	Order
LFR252001C	Class R	No	Check	Order
LFR252003C	Class R	No	Check	Order
LFR254001C	Class R	No	Check	Order
LFR254003C	Class R	No	Check	Order
LFR256001C	Class R	No	Check	Order
LFR256003C	Class R	No	Check	Order
LFR600301C	Class R	No	Check	Order
LFR600301CID	Class R	Yes	Check	Order
LFR600301P	Class R	No	Check	Order
LFR600301PID	Class R	Yes	Check	Order
LFR600301S	Class R	No	Check	Order
LFR600301SID	Class R	Yes	Check	Order
LFR600302C	Class R		Check	Order
LFR600302CID	Class R	Yes	Check	Order
LFR600302P	Class R	No	Check	Order
LFR600302PID	Class R	Yes	Check	Order
LFR600302S	Class R	No	Check	Order
LFR600302SID	Class R	Yes	Check	Order
LFR600303C	Class R	No	Check	Order
LFR600303CID	Class R	Yes	Check	Order
LFR600303P	Class R	No	Check	Order
LFR600303PID	Class R	Yes	Check	Order
LFR600303S	Class R	No	Check	Order
LFR600303SID	Class R	Yes	Check	Order
LFR600601C	Class R	No	Check	Order
LFR600601CID	Class R	Yes	Check	Order
LFR600601CID-HX	Class R	Yes	Check	Order
LFR600602C	Class R	No	Check	Order
LFR600602CID	Class R	Yes	Check	Order
LFR600602CID-HX	Class R	Yes	Check	Order
LFR600603C			Check	Order
LFR600603CID	Class R	Yes	Check	Order
LFR600603CID-HX	Class R	Yes	Check	Order
LFR601001C	Class R	No	Check	Order
LFR601001CID	Class R	Yes	Check	Order
LFR601003C	Class R	No	Check	Order
LFR601003CID	Class R	Yes	Check	Order
LFR602001C	Class R	No	Check	Order
LFR602003C	Class R	No	Check	Order
LFR604001C	Class R	No	Check	Order
LFR604003C	Class R	No	Check	Order
LFR606001C	Class R	No	Check	Order
LFR606003C	Class R	No	Check	Order

Catalog #	Certificates

LFR250301C
LFR250301P
LFR250301S
LFR250302C
LFR250302P
LFR250302S
LFR250303C
LFR250303P
LFR250303S
LFR250601CID
LFR250602CID
LFR250603CID
LFR251001CID
LFR251003CID
LFR252001C
LFR252003C
LFR254001C
LFR254003C
LFR256001C
LFR256003C
LFR600301CID
LFR600301PID
LFR600301SID
LFR600302CID
LFR600302PID
LFR600302SID
LFR600303CID
LFR600303PID
LFR600303SID
LFR600601CID
LFR600602CID
LFR600603CID
LFR601001CID
LFR601003CID
LFR602001C
LFR602003C
LFR604001C
LFR604003C
LFR606001C
LFR606003C

	LFR LFH Datasheet
	LFR251003CID 3D Model IGS
	LFR600601CID 3D Model IGS
	LFR600302PID 3D Model IGS
	LFR250303S 3D Model IGS
	LFR606003C 3D Model IGS
	LFR250301C 3D Model IGS
	LFR600302SID 3D Model IGS
	LFR250303C 3D Model IGS
	LFR600301CID 3D Model IGS
	LFR602001C 3D Model IGS
	LFR256003C 3D Model IGS
	LFR250303P 3D Model IGS
	LFR250301P 3D Model IGS
	LFR600303PID 3D Model IGS
	LFR604003C 3D Model IGS
	LFR251001CID 3D Model IGS
	LFR602003C 3D Model IGS
	LFR606001C 3D Model IGS
	LFR250302C 3D Model IGS
	LFR250602CID 3D Model IGS
	LFR600301PID 3D Model IGS
	LFR250601CID 3D Model IGS
	LFR600301SID 3D Model IGS
	LFR600303CID 3D Model IGS
	LFR250603CID 3D Model IGS
	LFR254001C 3D Model IGS
	LFR252003C 3D Model IGS
	LFR600602CID 3D Model IGS
	LFR250302P 3D Model IGS
	LFR601001CID 3D Model IGS
	LFR256001C 3D Model IGS
	LFR252001C 3D Model IGS
	LFR250301S 3D Model IGS
	LFR600303SID 3D Model IGS
	LFR250302S 3D Model IGS
	LFR601003CID 3D Model IGS
	LFR600302CID 3D Model IGS
	LFR254003C 3D Model IGS
	LFR604001C 3D Model IGS
	LFR600603CID 3D Model IGS
	OL-LFR25060Series CAD Drawing
	OL-LFR60400Series CAD Drawing
	OL-LFR25030Series CAD Drawing
	OL-LFR25400Series CAD Drawing
	OL-LFR60600Series CAD Drawing
	OL-LFR60100Series CAD Drawing
	OL-LFR60200Series CAD Drawing
	OL-LFR25600Series CAD Drawing
	OL-LFR25200Series CAD Drawing

Showing 7 items

- LLSRK_ID
  UL Class RK1 Dual Element Time-Delay Fuse
- Amps (A): 0.1, 0.15, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6, 0.8, 1, 1.125, 1.25, 1.4, 1.6, 1.8, 2, 2.25, 2.5, 2.8, 3 more
- Interrupting Rating: 20 kA @ 300 Vdc
- Opening: Slo-Blo/Time Lag (T)/Time Delay
- LLNRK
  UL Class RK1 Dual Element Time-Delay Fuse
- Amps (A): 0.1, 0.15, 0.2, 0.3, 0.4, 0.5, 0.6, 0.8, 1, 1.125, 1.25, 1.4, 1.6, 1.8, 2, 2.25, 2.5, 2.8, 3, 3.2 more
- Interrupting Rating: 20 kA @ 125 Vdc
- Opening: Slo-Blo/Time Lag (T)/Time Delay
- KLSR
  UL Class RK1 Fast Acting Fuse
- Amps (A): 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80 more
- Interrupting Rating: 20 kA @ 250 Vdc, 20 kA @ 300 Vdc, 200 kA @ 600 Vac
- Opening: Fast-Acting (F)
- KLNR
  UL Class RK1 Fast-Acting Fuses
- Amps (A): 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80 more
- Interrupting Rating: 20 kA @ 125 Vdc
- Opening: Fast-Acting (F)
- IDSR Series - UL Class RK5 Dual-Element Time Delay Fuses with Indication
  Littelfuse IDSR Fuses Provide Exceptional Overcurrent Protection with Indication
- Amps (A): 0.1, 0.15, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6, 0.8, 1, 1.125, 1.25, 1.4, 1.5, 1.6, 1.8, 2, 2.25, 2.5, 2.8 more
- Interrupting Rating: 20 kA @ 600 Vdc
- Opening: Slo-Blo/Time Lag (T)/Time Delay
- FLSR_ID Series - UL Class RK5 Dual-Element Time-Delay Fuses with Indication
  Littelfuse FLSR_ID Fuses Provide Exceptional Overcurrent Protection with Indication
- Amps (A): 0.1, 0.15, 0.2, 0.25, 0.3, 0.4, 0.5, 0.6, 0.8, 1, 1.125, 1.25, 1.4, 1.5, 1.6, 1.8, 2, 2.25, 2.5, 2.8 more
- Interrupting Rating: 20 kA @ 300 Vdc
- Opening: Slo-Blo/Time Lag (T)/Time Delay
- FLNR_ID Series - UL Class RK5 Dual-Element Time-Delay Fuses with Indication
  Littelfuse FLNR_ID Fuses Provide Exceptional Overcurrent Protection with Indication
- Amps (A): 35, 40, 45, 50, 60, 70, 80, 90, 100, 110, 125, 150, 175, 200, 225, 250, 300, 350, 400, 450 more
- Interrupting Rating: 300 kA Ac; 20 kA Dc
- Opening: Slo-Blo/Time Lag (T)/Time Delay

Part #	Part Description	RoHS	Pb-free	RoHS (2015/ 863/EU) Certificate	REACH (SVHC’s) Declaration	Halogen Free	REACH (SVHC’s)	IPC-Material Declaration
LFR250301C	250V CLASS R BLOCK 30A 1 POLE	No 07/10/2012	No 07/10/2012	CoC_RoHS10_LFR250301C	REACH209_Declaration_LFR250301C	No 07/10/2012	Does not Contain	Part Number - LFR250301C IPC-Material Declaration Select All X
LFR250301P	250V CLASS R BLOCK 30A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250301P IPC-Material Declaration Select All X
LFR250301S	250V CLASS R BLOCK 30A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250301S IPC-Material Declaration Select All X
LFR250302C	250V CLASS R BLOCK 30A 2 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250302C IPC-Material Declaration Select All X
LFR250302P	250V CLASS R BLOCK 30A 2 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250302P IPC-Material Declaration Select All X
LFR250302S	250V CLASS R BLOCK 30A 2 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250302S IPC-Material Declaration Select All X
LFR250303C	250V CLASS R BLOCK 30A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250303C IPC-Material Declaration Select All X
LFR250303P	250V CLASS R BLOCK 30A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250303P IPC-Material Declaration Select All X
LFR250303S	250V CLASS R BLOCK 30A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250303S IPC-Material Declaration Select All X
LFR250601C	250V CLASS R BLOCK 60A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250601C IPC-Material Declaration Select All X
LFR250601CID	250V CLASS R BLOCK 60A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250601CID IPC-Material Declaration Select All X
LFR250602C	250V CLASS R BLOCK 60A 2 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250602C IPC-Material Declaration Select All X
LFR250602CID	250V CLASS R BLOCK 60A 2 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250602CID IPC-Material Declaration Select All X
LFR250603C	250V CLASS R BLOCK 60A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250603C IPC-Material Declaration Select All X
LFR250603CID	250V CLASS R BLOCK 60A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR250603CID IPC-Material Declaration Select All X
LFR251001C	250V CLASS R BLOCK 100A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR251001C IPC-Material Declaration Select All X
LFR251001CID	250V CLASS R BLOCK 100A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR251001CID IPC-Material Declaration Select All X
LFR251003C	250V CLASS R BLOCK 100A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR251003C IPC-Material Declaration Select All X
LFR251003CID	250V CLASS R BLOCK 100A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR251003CID IPC-Material Declaration Select All X
LFR252001C	250V CLASS R BLOCK 200A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR252001C IPC-Material Declaration Select All X
LFR252003C	250V CLASS R BLOCK 200A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR252003C IPC-Material Declaration Select All X
LFR254001C	250V CLASS R BLOCK 400A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR254001C IPC-Material Declaration Select All X
LFR254003C	250V CLASS R BLOCK 400A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR254003C IPC-Material Declaration Select All X
LFR256001C	250V CLASS R BLOCK 600A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR256001C IPC-Material Declaration Select All X
LFR256003C	250V CLASS R BLOCK 600A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR256003C IPC-Material Declaration Select All X
LFR600301CID	600V CLASS R BLOCK 30A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600301CID IPC-Material Declaration Select All X
LFR600301PID	600V CLASS R BLOCK 30A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600301PID IPC-Material Declaration Select All X
LFR600301SID	600V CLASS R BLOCK 30A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600301SID IPC-Material Declaration Select All X
LFR600302CID	600V CLASS R BLOCK 30A 2 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600302CID IPC-Material Declaration Select All X
LFR600302PID	600V CLASS R BLOCK 30A 2 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600302PID IPC-Material Declaration Select All X
LFR600302SID	600V CLASS R BLOCK 30A 2 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600302SID IPC-Material Declaration Select All X
LFR600303CID	600V CLASS R BLOCK 30A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600303CID IPC-Material Declaration Select All X
LFR600303PID	600V CLASS R BLOCK 30A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600303PID IPC-Material Declaration Select All X
LFR600303SID	600V CLASS R BLOCK 30A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600303SID IPC-Material Declaration Select All X
LFR600601CID	600V CLASS R BLOCK 60A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600601CID IPC-Material Declaration Select All X
LFR600602CID	600V CLASS R BLOCK 60A 2 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR600602CID IPC-Material Declaration Select All X
LFR600603CID	600V CLASS R BLOCK 60A 3 POLE	No 07/10/2012	No 07/10/2012	CoC_RoHS10_LFR600603CID	REACH209_Declaration_LFR600603CID	No 07/10/2012	Does not Contain	Part Number - LFR600603CID IPC-Material Declaration Select All X
LFR601001CID	600V CLASS R BLOCK 100A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR601001CID IPC-Material Declaration Select All X
LFR601003CID	600V CLASS R BLOCK 100A 3 POLE	No 07/10/2012	No 07/10/2012	CoC_RoHS10_LFR601003CID	REACH209_Declaration_LFR601003CID	No 07/10/2012	Does not Contain	Part Number - LFR601003CID IPC-Material Declaration Select All X
LFR602001C	600V CLASS R BLOCK 200A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR602001C IPC-Material Declaration Select All X
LFR602003C	600V CLASS R BLOCK 200A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR602003C IPC-Material Declaration Select All X
LFR604001C	600V CLASS R BLOCK 400A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR604001C IPC-Material Declaration Select All X
LFR604003C	600V CLASS R BLOCK 400A 3 POLE	No 07/10/2012	No 07/10/2012	CoC_RoHS10_LFR604003C	REACH209_Declaration_LFR604003C	No 07/10/2012	Does not Contain	Part Number - LFR604003C IPC-Material Declaration Select All X
LFR606001C	600V CLASS R BLOCK 600A 1 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR606001C IPC-Material Declaration Select All X
LFR606003C	600V CLASS R BLOCK 600A 3 POLE	No 07/10/2012	No 07/10/2012			No 07/10/2012		Part Number - LFR606003C IPC-Material Declaration Select All X

If the product environmental information that you are looking for does not appear in this tab,
please complete the Product Environmental Information Request Form.

Semiconductors

LFR Series - Class R Indicating Fuse Blocks

Product Literature

Showing 7 items

Part Number - LFR250301C

IPC-Material Declaration

Part Number - LFR250301P

IPC-Material Declaration

Part Number - LFR250301S

IPC-Material Declaration

Part Number - LFR250302C

IPC-Material Declaration

Part Number - LFR250302P

IPC-Material Declaration

Part Number - LFR250302S

IPC-Material Declaration

Part Number - LFR250303C

IPC-Material Declaration

Part Number - LFR250303P

IPC-Material Declaration

Part Number - LFR250303S

IPC-Material Declaration

Part Number - LFR250601C

IPC-Material Declaration

Part Number - LFR250601CID

IPC-Material Declaration

Part Number - LFR250602C

IPC-Material Declaration

Part Number - LFR250602CID

IPC-Material Declaration

Part Number - LFR250603C

IPC-Material Declaration

Part Number - LFR250603CID

IPC-Material Declaration

Part Number - LFR251001C

IPC-Material Declaration

Part Number - LFR251001CID

IPC-Material Declaration

Part Number - LFR251003C

IPC-Material Declaration

Part Number - LFR251003CID

IPC-Material Declaration

Part Number - LFR252001C

IPC-Material Declaration

Part Number - LFR252003C

IPC-Material Declaration

Part Number - LFR254001C

IPC-Material Declaration

Part Number - LFR254003C

IPC-Material Declaration

Part Number - LFR256001C

IPC-Material Declaration

Part Number - LFR256003C

IPC-Material Declaration

Part Number - LFR600301CID

IPC-Material Declaration

Part Number - LFR600301PID

IPC-Material Declaration

Part Number - LFR600301SID

IPC-Material Declaration

Part Number - LFR600302CID

IPC-Material Declaration

Part Number - LFR600302PID

IPC-Material Declaration

Part Number - LFR600302SID

IPC-Material Declaration

Part Number - LFR600303CID

IPC-Material Declaration

Part Number - LFR600303PID

IPC-Material Declaration

Part Number - LFR600303SID

IPC-Material Declaration

Part Number - LFR600601CID

IPC-Material Declaration

Part Number - LFR600602CID

IPC-Material Declaration

Part Number - LFR600603CID

IPC-Material Declaration

Part Number - LFR601001CID

IPC-Material Declaration