500V AC Fuses | McMaster-Carr

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About Fuses

Designed to handle high inrush currents and the initial current cycle unique to transformers, these fuses provide comparable performance with a smaller footprint than standard size fuses. Use them to protect power distribution branch circuits. They’re for use with Fuse Blocks for UL Class CC 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	Rejection-Style End	Specifications Met		1-9	10-Up
Manufacturer Equivalent: ATQ, FLQ, FNQ
1 4/10	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	No	UL Listed	00000000	000000	000000

Time-Delay Ceramic-Tube Fuses

5mm Dia.

Able to withstand current overload for a short time, these fuses will not open when exposed to harmless temporary surges. They can withstand temperature swings and high ambient temperatures better than glass-tube fuses. Use them with electronics, control panels, and other sensitive components. Select these fuses by their diameters. Designed for use with Fuse Blocks for Ceramic-Tube 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.

								Pkg.
Current, A	Voltage	Breakthrough Current	Overall Lg., mm	No. of Elements	Specifications Met	Pkg. Qty.		1-9	10-Up
Manufacturer Equivalent: 477
5mm Overall Dia.
1/2	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	000000	000000
8/10	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
1	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
2	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
3.15	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
4	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
5	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
6 3/10	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
8	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
10	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
12	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000
16	500V AC/400V DC	100 A @ 500 V AC 400 A @ 400 V DC	20	1	UL Recognized Component, C-UL Recognized Component, CE Marked	5	00000000	00000	00000

Fast-Acting Ceramic-Tube Fuses

1/4" Dia.

These fuses open circuits quickly when surges are detected. They can withstand temperature swings and high ambient temperatures better than glass-tube fuses. Use with electronics, control panels, and other sensitive components. Select these fuses by their diameters. Designed for use with Fuse Blocks for Ceramic-Tube 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.

1/4" dia. fuses can be used in high-current electronic circuits such as microwave ovens.

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

									Pkg.
Fuse Trade Size	Current, A	Voltage	Breakthrough Current	Overall Lg.	No. of Elements	Specifications Met	Pkg. Qty.		1-9	10-Up
Manufacturer Equivalent: 505
1/4" Overall Dia.
3AB	16	500V DC/500V AC	20,000 A @ 500 V DC 30,000 A @ 500 V AC	1 1/4"	1	UL Recognized Component, C-UL Recognized Component	5	000000000	000000	000000
3AB	20	500V DC/500V AC	20,000 A @ 500 V DC 30,000 A @ 500 V AC	1 1/4"	1	UL Recognized Component, C-UL Recognized Component	5	000000000	00000	00000
3AB	25	500V DC/500V AC	20,000 A @ 500 V DC 30,000 A @ 500 V AC	1 1/4"	1	UL Recognized Component, C-UL Recognized Component	5	000000000	00000	00000
3AB	30	500V DC/500V AC	20,000 A @ 500 V DC 30,000 A @ 500 V AC	1 1/4"	1	UL Recognized Component, C-UL Recognized Component	5	000000000	00000	00000

Time-Delay Midget 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	000000	000000
1/2	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
6/10	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
8/10	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
1	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
1 1/2	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
2	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
2 1/2	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
3	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
3 2/10	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
4	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
5	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
6 1/4	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
7	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
8	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
10	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
12	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
15	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
20	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
25	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000
30	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	00000	00000

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: A50QS, FWH, L50S
10	500V AC	200,000 A @ 500 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	000000
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

European Fuses

These fuses can be used with equipment made in Europe.

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, mm						Each
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	Protection Type	No. of Elements	Specifications Met		1-9	10-Up
Type gL-gG
1	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	000000	000000
2	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	00000	00000
4	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	00000	00000
6	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	00000	00000
8	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	00000	00000
10	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	00000	00000
12	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	00000	00000
16	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	00000	00000
20	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	00000	00000
25	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	00000	00000

European Milk Bottle Fuses

Type gL, 2-20 amps

Type gL, 25-63 amps

Type gL-gG, 2-20 amps

Type gL-gG, 25-63 amps

Also known as diazed or Type D fuses, these fuses can be used with equipment made in Europe.

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.

Fuses with a blown fuse indicator have a visual pin that pops out.

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

			Overall, mm							Each
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	Tip Dia., mm	Protection Type	No. of Elements	Blown Fuse Indicator		1-4	5-Up
Type gL
2	500V AC	100,000 A @ 500 V AC	50	21.5	6	Fast Acting	1	No	0000000	000000	000000
4	500V AC	100,000 A @ 500 V AC	50	21.5	6	Fast Acting	1	No	0000000	00000	00000
6	500V AC	100,000 A @ 500 V AC	50	21.5	6	Fast Acting	1	No	0000000	00000	00000
10	500V AC	100,000 A @ 500 V AC	50	21.5	8	Fast Acting	1	No	0000000	00000	00000
16	500V AC	100,000 A @ 500 V AC	50	21.5	10	Fast Acting	1	No	0000000	00000	00000
20	500V AC	100,000 A @ 500 V AC	50	21.5	12	Fast Acting	1	No	0000000	00000	00000
25	500V AC	100,000 A @ 500 V AC	50	21.5	14	Fast Acting	1	No	0000000	00000	00000
35	500V AC	100,000 A @ 500 V AC	50	27	16	Fast Acting	1	No	0000000	00000	00000
50	500V AC	100,000 A @ 500 V AC	50	27	18	Fast Acting	1	No	0000000	00000	00000
63	500V AC	100,000 A @ 500 V AC	50	27	20	Fast Acting	1	No	0000000	00000	00000
Type gL-gG
2	500V AC	75,000 A @ 500 V AC	50	21.5	6	Fast Acting	1	Yes	0000000	0000	0000
4	500V AC	75,000 A @ 500 V AC	50	21.5	6	Fast Acting	1	Yes	0000000	0000	0000
6	500V AC	75,000 A @ 500 V AC	50	21.5	6	Fast Acting	1	Yes	0000000	0000	0000
10	500V AC	75,000 A @ 500 V AC	50	21.5	8	Fast Acting	1	Yes	0000000	0000	0000
16	500V AC	75,000 A @ 500 V AC	50	21.5	10	Fast Acting	1	Yes	0000000	0000	0000
20	500V AC	75,000 A @ 500 V AC	50	21.5	12	Fast Acting	1	Yes	0000000	0000	0000
25	500V AC	75,000 A @ 500 V AC	50	21.5	14	Fast Acting	1	Yes	0000000	0000	0000
35	500V AC	75,000 A @ 500 V AC	50	27	16	Fast Acting	1	Yes	0000000	00000	0000
50	500V AC	75,000 A @ 500 V AC	50	27	18	Fast Acting	1	Yes	0000000	00000	0000
63	500V AC	75,000 A @ 500 V AC	50	27	20	Fast Acting	1	Yes	0000000	00000	0000

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About Fuses

UL Class CC Time-Delay Midget Fuses for Transformers

Time-Delay Ceramic-Tube Fuses

Fast-Acting Ceramic-Tube Fuses

Time-Delay Midget Fuses

Fuses for Sensitive Electronics

European Fuses

European Milk Bottle Fuses