053787_C_000 Fuses | McMaster-Carr

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Manufacturer Equivalent Fuse

Voltage

Overall Length

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Fuse UL Class

Fuse Protection Type

Breakthrough Current @ Voltage

50,000 amp @ 250V AC

200,000 amp @ 250V AC

200,000 amp @ 600V AC

Length

Cartridge Fuse Type

Overall Diameter

With Blown Fuse Indicator

Diameter

Certification

Number of Elements

Rejection-Style End

Yes

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77 Products

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: FLN-R, FRN-R, TR-R







				9/16" Overall Diameter

				1/2	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K216	000000	000000


				6/10	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K215	00000	00000
				1	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K182	00000	00000
				1 1/4	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K183	00000	00000
				1 6/10	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K188	00000	00000
				2	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K184	00000	00000
				2 1/2	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K185	00000	00000
				3	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K211	00000	00000
				3 2/10	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K11	00000	00000
				4	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K186	00000	00000
				4 1/2	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K46	00000	00000


				5	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K44	00000	00000
				6	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K212	00000	00000
				7	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K187	00000	00000
				8	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K189	00000	00000
				10	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K12	00000	00000
				12	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K47	00000	00000
				15	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K13	00000	00000
				20	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K14	00000	00000
				25	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K192	00000	00000
				30	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	2"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K15	00000	00000




						13/16" Overall Diameter

						35	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	3"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K217	00000	00000


						40	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	3"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K16	00000	00000
						45	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	3"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K213	00000	00000
						50	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	3"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K17	00000	00000
						60	RK5	250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	3"	2	Ferrule	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K18	00000	00000




								1 1/16" Overall Diameter

								70	RK5	250V AC	200,000 amp @ 250V AC	5 7/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K262	00000	00000


								80	RK5	250V AC	200,000 amp @ 250V AC	5 7/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K263	00000	00000
								90	RK5	250V AC	200,000 amp @ 250V AC	5 7/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K48	00000	00000
								100	RK5	250V AC	200,000 amp @ 250V AC	5 7/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K19	00000	00000




										1 9/16" Overall Diameter

125	RK5									250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	7 1/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K214	000000	000000


150	RK5									250V AC, 125V DC	200,000 amp @ 250V AC 20,000 amp @ 125V DC	7 1/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K49	000000	000000
200	RK5	250V AC, 125V DC								200,000 amp @ 250V AC 20,000 amp @ 125V DC	7 1/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K2	000000	000000




		2 3/8" Overall Diameter

		300	RK5							250V AC, 250V DC	200,000 amp @ 250V AC 20,000 amp @ 250V DC	8 5/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K218	000000	000000


		400	RK5							250V AC, 250V DC	200,000 amp @ 250V AC 20,000 amp @ 250V DC	8 5/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K21	000000	000000




										2 7/8" Overall Diameter

										600	RK5	250V AC, 250V DC	200,000 amp @ 250V AC 20,000 amp @ 250V DC	10 3/8"	2	Knife Blade	Time Delay	No	Yes	UL Listed, CSA Certified	E4273	053787_C_000	7049K241	000000	000000


										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	00000	00000


				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


										Manufacturer Equivalent Fuse: FRS-R-ID, IDSR, TRS-R-ID







					1 9/16" 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	7487K819	000000	000000

UL Class K5 Fuses

Ferrule

Cartridge Fuse

Use these fast-acting fuses in applications where temporary overload current is not present, such as in lighting and heating. They open circuits quickly when surges are detected. Use with Fuse Blocks for UL Class K5 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: NLN, NON, OT







				9/16" Overall Diameter

				1	K5	250V AC, 125V DC	50,000 amp @ 250V AC 50,000 amp @ 125V DC	2"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	E4273	053787_C_000	7072K133	00000	00000