Semiconductor Fuses | McMaster-Carr

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Manufacturer Equivalent Fuse

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Breakthrough Current @ Voltage

100,000 amp @ 150V AC

200,000 amp @ 250V AC

200,000 amp @ 500V AC

200,000 amp @ 700V AC

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42 Products

Fuses for Sensitive Electronics


Ferrule Cartridge Fuse	Knife-Blade Cartridge Fuse

With a quicker response than standard fast-acting fuses, these fuses provide the best protection for sensitive electronics.

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.

	Voltage, V AC	Breakthrough Current @ Voltage	Overall Lg.	No. of Elements	Cartridge Fuse Type	Fuse Protection Type	With Blown Fuse Indicator	Rejection-Style End	Certification		Each
Manufacturer Equivalent Fuse: A15QS, FWA, L15S







			7/16" Overall Diameter

			10	150	100,000 amp @ 150V AC	1 1/2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K11	000000




					1 1/8" Overall Diameter

					100	150	100,000 amp @ 150V AC	2 11/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K13	00000


					150	150	100,000 amp @ 150V AC	2 11/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K14	00000
					200	150	100,000 amp @ 150V AC	2 11/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K15	00000
					250	150	100,000 amp @ 150V AC	2 11/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K16	00000
					300	150	100,000 amp @ 150V AC	2 11/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K17	00000
					400	150	100,000 amp @ 150V AC	2 11/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K18	00000


					Manufacturer Equivalent Fuse: A30QS, FWX, L25S







									9/16" Overall Diameter

									10	250	200,000 amp @ 250V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K211	00000


									20	250	200,000 amp @ 250V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K212	00000
									25	250	200,000 amp @ 250V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K214	00000
									30	250	200,000 amp @ 250V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K213	00000




											13/16" Overall Diameter

											40	250	200,000 amp @ 250V AC	3 3/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K221	00000


											50	250	200,000 amp @ 250V AC	3 3/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K222	00000
											60	250	200,000 amp @ 250V AC	3 3/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K223	00000




													1 1/4" Overall Diameter

													80	250	200,000 amp @ 250V AC	3 1/8"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K231	000000


													100	250	200,000 amp @ 250V AC	3 1/8"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K232	000000
													200	250	200,000 amp @ 250V AC	3 1/8"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K233	000000




													1 1/2" Overall Diameter

	400	250											200,000 amp @ 250V AC	3 13/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K242	000000


	Manufacturer Equivalent Fuse: A50QS, FWH, L50S







													9/16" Overall Diameter

													10	500	200,000 amp @ 500V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K311	00000


													20	500	200,000 amp @ 500V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K312	00000
													30	500	200,000 amp @ 500V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K313	00000




					13/16" Overall Diameter

					40	500									200,000 amp @ 500V AC	3 3/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K321	00000


					50	500									200,000 amp @ 500V AC	3 3/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K322	00000
					60	500	200,000 amp @ 500V AC								3 3/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K323	00000




							15/16" Overall Diameter

							80	500							200,000 amp @ 500V AC	3 5/8"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K341	00000


							100	500							200,000 amp @ 500V AC	3 5/8"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K342	00000




									1 3/16" Overall Diameter

									125	500					200,000 amp @ 500V AC	3 5/8"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K344	000000


									150	500					200,000 amp @ 500V AC	3 5/8"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K345	000000
									200	500					200,000 amp @ 500V AC	3 5/8"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K343	000000




											1 1/2" Overall Diameter

											300	500			200,000 amp @ 500V AC	4 5/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K351	000000


											400	500			200,000 amp @ 500V AC	4 5/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K352	000000




											2" Overall Diameter

											600	500			200,000 amp @ 500V AC	4 5/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K353	000000


	Manufacturer Equivalent Fuse: A70QS, FWP, L70S







											9/16" Overall Diameter

											10	700			200,000 amp @ 700V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K415	00000


											20	700			200,000 amp @ 700V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K411	00000
											25	700			200,000 amp @ 700V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K412	00000
											30	700			200,000 amp @ 700V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K413	00000
											32	700			200,000 amp @ 700V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K42	00000
											40	700			200,000 amp @ 700V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K414	00000
											50	700			200,000 amp @ 700V AC	2"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K43	00000




													7/8" Overall Diameter

													63	700	200,000 amp @ 700V AC	2 5/16"	1	Ferrule	Fast Acting	No	No	UL Recognized Component	74475K47	00000




													1 1/2" Overall Diameter

													150	700	200,000 amp @ 700V AC	5 1/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K44	000000




							2" Overall Diameter

							400	700							200,000 amp @ 700V AC	5 1/16"	1	Knife Blade	Fast Acting	No	No	UL Recognized Component	74475K45	000000