Semiconductor Fuses | McMaster-Carr

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Current

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Manufacturer Equivalent Fuse

Overall Length

Cartridge Fuse Type

Overall Diameter

Breakthrough Current @ Voltage

100,000 amp @ 150V AC

200,000 amp @ 250V AC

200,000 amp @ 500V AC

200,000 amp @ 700V AC

DFARS Specialty Metals

Exempt

Export Control Classification Number (ECCN)

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About Fuses

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Fuses for Sensitive Electronics

Ferrule Style

Knife-Blade Style

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

Breakthrough current, labeled on the fuse as IR, is the maximum current that a fuse can safely stop in the event of a short circuit.

For technical drawings and 3-D models, click on a part number.

			Overall
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	No. of Elements	Cartridge Fuse Style	Protection Type	Specifications Met		Each
Manufacturer Equivalent: A15QS, FWA, L15S
10	150V AC	100,000 A @ 150 V AC	1 1/2"	7/16"	1	Ferrule	Fast Acting	UL Recognized Component	00000000	000000
15	150V AC	100,000 A @ 150 V AC	1 1/2"	7/16"	1	Ferrule	Fast Acting	UL Recognized Component	00000000	00000
100	150V AC	100,000 A @ 150 V AC	2 11/16"	1 1/8"	1	Knife Blade	Fast Acting	UL Recognized Component	00000000	00000
150	150V AC	100,000 A @ 150 V AC	2 11/16"	1 1/8"	1	Knife Blade	Fast Acting	UL Recognized Component	00000000	00000
200	150V AC	100,000 A @ 150 V AC	2 11/16"	1 1/8"	1	Knife Blade	Fast Acting	UL Recognized Component	00000000	00000
250	150V AC	100,000 A @ 150 V AC	2 11/16"	1 1/8"	1	Knife Blade	Fast Acting	UL Recognized Component	00000000	00000
300	150V AC	100,000 A @ 150 V AC	2 11/16"	1 1/8"	1	Knife Blade	Fast Acting	UL Recognized Component	00000000	00000
400	150V AC	100,000 A @ 150 V AC	2 11/16"	1 1/8"	1	Knife Blade	Fast Acting	UL Recognized Component	00000000	00000
Manufacturer Equivalent: A30QS, FWX, L25S
10	250V AC	200,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
20	250V AC	200,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
25	250V AC	200,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
30	250V AC	200,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
40	250V AC	200,000 A @ 250 V AC	3 3/16"	13/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	00000
50	250V AC	200,000 A @ 250 V AC	3 3/16"	13/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	00000
60	250V AC	200,000 A @ 250 V AC	3 3/16"	13/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	00000
80	250V AC	200,000 A @ 250 V AC	3 1/8"	1 1/4"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
100	250V AC	200,000 A @ 250 V AC	3 1/8"	1 1/4"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
200	250V AC	200,000 A @ 250 V AC	3 1/8"	1 1/4"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
400	250V AC	200,000 A @ 250 V AC	3 13/16"	1 1/2"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
Manufacturer Equivalent: A50QS, FWH, L50S
10	500V AC	200,000 A @ 500 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
20	500V AC	200,000 A @ 500 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
30	500V AC	200,000 A @ 500 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
40	500V AC	200,000 A @ 500 V AC	3 3/16"	13/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	00000
50	500V AC	200,000 A @ 500 V AC	3 3/16"	13/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	00000
60	500V AC	200,000 A @ 500 V AC	3 3/16"	13/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	00000
80	500V AC	200,000 A @ 500 V AC	3 5/8"	15/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	00000
100	500V AC	200,000 A @ 500 V AC	3 5/8"	15/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	00000
125	500V AC	200,000 A @ 500 V AC	3 5/8"	1 3/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
150	500V AC	200,000 A @ 500 V AC	3 5/8"	1 3/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
200	500V AC	200,000 A @ 500 V AC	3 5/8"	1 3/16"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
300	500V AC	200,000 A @ 500 V AC	4 5/16"	1 1/2"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
400	500V AC	200,000 A @ 500 V AC	4 5/16"	1 1/2"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
600	500V AC	200,000 A @ 500 V AC	4 5/16"	2"	1	Knife Blade	Fast Acting	UL Recognized Component	000000000	000000
Manufacturer Equivalent: A70QS, FWP, L70S
10	700V AC	200,000 A @ 700 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
20	700V AC	200,000 A @ 700 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
25	700V AC	200,000 A @ 700 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
30	700V AC	200,000 A @ 700 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
32	700V AC	200,000 A @ 700 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	00000000	00000
40	700V AC	200,000 A @ 700 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000
50	700V AC	200,000 A @ 700 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	00000000	00000
63	700V AC	200,000 A @ 700 V AC	2 5/16"	7/8"	1	Ferrule	Fast Acting	UL Recognized Component	00000000	00000
150	700V AC	200,000 A @ 700 V AC	5 1/16"	1 1/2"	1	Knife Blade	Fast Acting	UL Recognized Component	00000000	000000
400	700V AC	200,000 A @ 700 V AC	5 1/16"	2"	1	Knife Blade	Fast Acting	UL Recognized Component	00000000	000000