Littelfuse-Type FLS-R Fuses

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Current

Manufacturer Equivalent Fuse

Voltage

Overall Length

Breakthrough Current @ Voltage

200,000 amp @ 600V AC

Cartridge Fuse Type

Length

Overall Diameter

Diameter

Certification

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

REACH

RoHS

39 Products

About Fuses

Compare across fuse type, UL class, and voltage. Then cross-reference manufacturer part numbers to find suitable replacements.

UL Class RK5 Fuses


Ferrule Cartridge Fuse, Without Blown Fuse Indicator	Knife-Blade Cartridge Fuse, Without Blown Fuse Indicator

Also known as dual-element fuses, these time-delay fuses withstand current overload for a short time so they won't open when exposed to harmless temporary surges, such as when starting a motor. They have a rejection-style end design that safeguards against replacement errors. Use with Fuse Blocks for UL Class RK5 Fuses.

Breakthrough Current @ Voltage—Breakthrough current at voltage, labeled on the fuse as IR, is the maximum current that a fuse can safely stop in the event of a short circuit.

															Each
	Current, amp	Fuse UL Class	Voltage	Breakthrough Current @ Voltage	Overall Lg.	No. of Elements	Cartridge Fuse Type	Fuse Protection Type	With Blown Fuse Indicator	Rejection-Style End	Certification	UL File No.	CSA File No.		1-9	10-Up
Manufacturer Equivalent Fuse: FLS-R, FRS-R, TRS-R







				13/16" Overall Diameter

				1/4	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K225	000000	000000


				1/2	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K226	00000	00000
				1	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K272	00000	00000
				1 1/4	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K273	00000	00000
				1 6/10	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K278	00000	00000
				2	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K274	00000	00000
				2 1/2	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K275	00000	00000
				3	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K221	00000	00000
				3 2/10	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K22	00000	00000
				4	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K276	00000	00000
				5	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K45	00000	00000


				6	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K222	00000	00000
				6 1/4	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K91	00000	00000
				7	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K277	00000	00000
				8	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K279	00000	00000
				10	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K23	00000	00000
				12	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K81	00000	00000
				15	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K24	00000	00000
				17 1/2	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K92	00000	00000
				20	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K25	00000	00000
				25	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K282	00000	00000


				30	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	5"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K26	00000	00000




						1 1/16" Overall Diameter

						35	RK5	600V AC, 250V DC	200,000 amp @ 600V AC 20,000 amp @ 250V DC	5 1/2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K227	00000	00000


						40	RK5	600V AC, 250V DC	200,000 amp @ 600V AC 20,000 amp @ 250V DC	5 1/2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K27	00000	00000
						45	RK5	600V AC, 250V DC	200,000 amp @ 600V AC 20,000 amp @ 250V DC	5 1/2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K223	00000	00000
						50	RK5	600V AC, 250V DC	200,000 amp @ 600V AC 20,000 amp @ 250V DC	5 1/2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K28	00000	00000
						60	RK5	600V AC, 250V DC	200,000 amp @ 600V AC 20,000 amp @ 250V DC	5 1/2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K29	00000	00000




								1 1/8" Overall Diameter

								70	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	7 7/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K312	00000	00000


								80	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	7 7/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K51	00000	00000
								90	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	7 7/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K313	00000	00000
								100	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	7 7/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K3	00000	00000




								1 5/8" Overall Diameter

								125	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	9 5/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K224	000000	000000


		150	RK5					600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	9 5/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K52	000000	000000
		175	RK5					600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	9 5/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K82	000000	000000
		200	RK5					600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	9 5/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K31	000000	000000




								2 11/32" Overall Diameter

								300	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	11 5/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K34	000000	000000


								400	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	11 5/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K32	000000	000000




										2 7/8" Overall Diameter

										500	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	13 3/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K53	000000	000000


										600	RK5	600V AC, 300V DC	200,000 amp @ 600V AC 20,000 amp @ 300V DC	13 3/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K251	000000	000000