FLSR Series - UL Class RK5 Dual-Element Time-Delay Fuses

FLSR Series - Littelfuse FLSR Fuses Provide Exceptional Overcurrent Protection

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 FLSR series dual-element, time-delay UL Class RK5 fuses are the most widely used fuse class. They offer superior performance and excellent protection for all types of circuits, especially those with motors. Precision manufactured parts ensure an accurate, consistent response to overloads and short-circuits. The FLSR fuses are also available in an indicating version, see the FLSR_ID series.

Features

Excellent short-circuit protection
Dual-element design
Current-limiting

Access specifications, certifications, check availability and order parts below

Catalog #	Amps (A)	Interrupting Rating	Opening	VAC (V)	VDC (V)	Size	Stock	Samples

FLSR.100	0.1	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR.150	0.15	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR.200	0.2	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR.250	0.25	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR.300	0.3	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR.400	0.4	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR.500	0.5	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR.600	0.6	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR.800	0.8	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR001	1	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR01.4	1.4	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR01.5	1.5	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR01.6	1.6	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR01.8	1.8	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR1.12	1.125	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR1.25	1.25	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR002	2	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR02.5	2.5	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR02.8	2.8	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR2.25	2.25	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR003	3	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR03.2	3.2	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR03.5	3.5	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR004	4	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR04.5	4.5	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR005	5	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR05.6	5.6	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR006	6	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR6.25	6.25	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR007	7	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR07.5	7.5	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR008	8	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR009	9	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR010	10	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR012	12	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR015	15	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR17.5	17.5	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR020	20	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR025	25	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR030	30	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR035	35	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR040	40	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR045	45	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR050	50	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR060	60	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Industrial Cartridge	Check	Order
FLSR070	70	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR075	75	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR080	80	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR090	90	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR100	100	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR110	110	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR125	125	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR150	150	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR175	175	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR200	200	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR225	225	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR250	250	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR300	300	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR350	350	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR400	400	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR450	450	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR500	500	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order
FLSR600	600	20 kA @ 300 Vdc	Slo-Blo/Time Lag (T)/Time Delay	600	300	Knife-Blade	Check	Order

Catalog #	Certificates

FLSR.100
FLSR.150
FLSR.200
FLSR.250
FLSR.300
FLSR.400
FLSR.500
FLSR.600
FLSR.800
FLSR001
FLSR01.4
FLSR01.5
FLSR01.6
FLSR01.8
FLSR1.12
FLSR1.25
FLSR002
FLSR02.5
FLSR02.8
FLSR2.25
FLSR003
FLSR03.2
FLSR03.5
FLSR004
FLSR04.5
FLSR005
FLSR05.6
FLSR006
FLSR6.25
FLSR007
FLSR07.5
FLSR008
FLSR009
FLSR010
FLSR012
FLSR015
FLSR17.5
FLSR020
FLSR025
FLSR030
FLSR035
FLSR040
FLSR045
FLSR050
FLSR060
FLSR070
FLSR075
FLSR080
FLSR090
FLSR100
FLSR110
FLSR125
FLSR150
FLSR175
FLSR200
FLSR225
FLSR250
FLSR300
FLSR350
FLSR400
FLSR450
FLSR500
FLSR600

	FLSR450 3D Model IGS
	FLSR Time Current Curves
	FLSR 35-60A 3D Model STP
	FLSR 35-60A CAD DWG
	FLSR 0.100-30 2D Print PDF
	FLSR 35-60A 2D Prints PDF
	FLSR 70-100A 3D Model STP
	FLSR 70-100A CAD DWG
	FLSR 110-200A 2D Prints PDF
	FLSR 110-200A 3D Model STP
	FLSR 110-200A CAD DWG
	FLSR 225-400A 2D Print PDF
	FLSR 225-400A 3D Model STP
	FLSR 225-400A CAD DWG
	FLSR 450-600A 2D Print PDF
	FLSR 450-600A 3D Model STP
	FLSR 450-600 CAD DWG
	Rockwell Encompass Brochure
	Littelfuse Rockwell Catalog
	FLSR Datasheet
	Fuse Fundamentals Technical Paper
	Fuses and the Construction Market
	UL POWR Fuses Flyer

Showing 3 items

- 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
- LFR
  Class R Indicating Fuse Blocks
- Fuse Type: Class R
- Indicating: No, Yes
- Information Not Available
- LF Series Covers
  UL Class Fuseblock Touch-Safe Covers
- Max Amps: 30, 60, 100, 200, 400, 600
- Information Not Available
- Information Not Available