Time Delay Midget Fuses | McMaster-Carr

	Current Current

1/4A

1/2A

6/10A

	Manufacturer Equivalent Manufacturer Equivalent

	Voltage Voltage

250V AC

500V AC

	Protection Type Protection Type

Time Delay

	Fuse Type Fuse Type

	Cartridge

	Overall Length Overall Length

1 1/2"

	Overall Diameter Overall Diameter

13/32"

	Specifications Met Specifications Met

CSA

	Breakthrough Current Breakthrough Current

10,000 A @ 250 V AC

10,000 A @ 500 V AC

	Number of Elements Number of Elements

	Cartridge Fuse Style Cartridge Fuse Style

Ferrule

	Rejection-Style End Rejection-Style End

	Blown Fuse Indicator Blown Fuse Indicator

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

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About Fuses

Able to withstand current overload for a short time, these fuses will not open when exposed to harmless temporary surges, such as when starting a motor. Use them to protect equipment—they are not designed for power distribution circuits. Designed for use with Fuse Blocks for Midget Fuses.

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						Each
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	No. of Elements	Cartridge Fuse Style	Specifications Met		1-9	10-Up
Manufacturer Equivalent: ATQ, FLQ, FNQ
1/4	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
1/2	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
6/10	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
8/10	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
1	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
1 1/2	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
2	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
2 1/2	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
3	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
3 2/10	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
4	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
5	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
6 1/4	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
7	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
8	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
10	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
12	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
15	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
20	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
25	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
30	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	0000
Manufacturer Equivalent: FLM, FNM, TRM
1/4	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
1/2	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
6/10	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
8/10	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
1	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
1 1/4	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
1 6/10	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
1 8/10	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
2	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
2 1/4	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
2 1/2	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
3	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
3 2/10	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
4	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
4 1/2	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
5	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
6	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
6 1/4	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
7	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
8	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
10	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
12	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
15	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
20	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
25	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000
30	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000

About Fuses

Time-Delay Midget Fuses