125V DC Fuses | McMaster-Carr

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200,000 amp @ 250V AC

300,000 amp @ 250V AC

100,000 amp @ 125V DC

20,000 amp @ 160V DC

20,000 amp @ 250V DC

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About Fuses

Ferrule Style

Knife-Blade Style

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

			Overall									Each
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	No. of Elements	Cartridge Fuse Style	Blown Fuse Indicator	Specifications Met	UL File Number	CSA File Number		1-9	10-Up
Manufacturer Equivalent: FLN-R, FRN-R, TR-R
1/2	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	000000	000000
6/10	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
1	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
1 1/4	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
1 6/10	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
2	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
2 1/2	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
3	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
3 2/10	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
4	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
4 1/2	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
5	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
6	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
6 1/4	250V AC/125V DC	20,000 A @ 160 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
7	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
8	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
10	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
12	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
15	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	0000
17 1/2	250V AC/125V DC	20,000 A @ 160 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	0000
20	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	0000
25	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	0000
30	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	0000
35	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
40	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
45	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
50	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
60	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
125	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	7 1/8"	1 9/16"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	000000	00000
150	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	7 1/8"	1 9/16"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	000000	00000
175	250V AC/125V DC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	7 1/8"	1 9/16"	2	Knife Blade	No	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
200	250V AC/125V DC	20,000 A @ 125 V DC 200,000 A @ 250 V AC	7 1/8"	1 9/16"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	000000	000000	00000
Manufacturer Equivalent: FLN-R-ID, FRN-R-ID, TR-R-ID
5	250V AC/125V DC	20,000 A @ 160 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
6	250V AC/125V DC	20,000 A @ 160 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	No	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000

UL Class RK1 Time-Delay Fuses

Ferrule Style

Also known as dual-element fuses, these 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. Designed for use with Fuse Blocks for UL Class RK1 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.

			Overall						Each
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	No. of Elements	Cartridge Fuse Style	Specifications Met		1-9	10-Up
Manufacturer Equivalent: A2D-R, LLN-RK, LPN-RK
1/2	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	000000	000000
1	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
1 1/4	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
2	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
2 1/2	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
3	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
5	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
6	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
10	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
15	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
20	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
30	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	2"	9/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
40	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	3"	13/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
50	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	3"	13/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
60	250V AC/125V DC	100,000 A @ 125 V DC 300,000 A @ 250 V AC	3"	13/16"	2	Ferrule	UL Listed, CSA Certified	000000000	00000	00000

UL Class K5 Fuses

Ferrule Style

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, 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: NLN, NON, OT
1	250V AC/125V DC	50,000 A @ 125 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified, CE Marked	00000000	000000	000000

Time-Delay Ceramic-Tube Fuses

1/4" 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.

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.

								Each
Fuse Trade Size	Current, A	Voltage	Breakthrough Current	Overall Lg.	No. of Elements	Specifications Met		1-9	10-Up
Manufacturer Equivalent: 326, GSA, MDA
1/4" Overall Dia.
3AB	20	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified, CE Marked	000000000	00000	00000
3AB	25	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified, CE Marked	000000000	0000	0000
3AB	30	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified, CE Marked	000000000	0000	0000

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.

							Each
Current, A	Voltage	Breakthrough Current	Overall Lg.	No. of Elements	Specifications Met		1-9	10-Up
Manufacturer Equivalent: 322, GBB
1/4" Overall Dia.
1	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	000000	000000
2	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
3	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
4	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
5	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
6	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
8	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
10	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
12	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
15	250V AC/125V DC	10,000 A @ 125 V AC, 10,000 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
20	250V AC/125V DC	200 A @ 125 V AC, 200 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000
25	250V AC/125V DC	200 A @ 125 V AC, 200 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	000000000	00000	00000

									Pkg.
Fuse Trade Size	Current, A	Voltage	Breakthrough Current	Overall Lg.	No. of Elements	Specifications Met	Pkg. Qty.		1-9	10-Up
Manufacturer Equivalent: 314, ABC, GAB
1/4" Overall Dia.
3AB	1/4	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	00000	00000
3AB	1/2	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	3/4	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	1	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	1 1/2	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	2	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	2 1/2	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	3	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	4	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	5	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	0000000	0000	0000
3AB	6	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	7	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	8	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	10	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	12	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	15	250V AC/125V DC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	1 1/4"	1	UL Listed, CSA Certified	5	00000000	0000	0000
3AB	20	250V AC/125V DC	1,000 A @ 125 V AC 400 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	5	00000000	00000	00000
3AB	25	250V AC/125V DC	1,000 A @ 125 V AC 400 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	5	00000000	00000	00000
3AB	30	250V AC/125V DC	1,000 A @ 125 V AC 400 A @ 125 V DC	1 1/4"	1	UL Recognized Component, CSA Certified	5	00000000	00000	00000

Fast-Acting Lift Truck Fuses

These fuses open circuits quickly when surges are detected. Use them on battery-operated lift trucks.

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	Blown Fuse Indicator	Specifications Met		Each
Manufacturer Equivalent: AFX, ALS
200	125V DC/125V AC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	4 3/4"	1 1/8"	1	No	UL Recognized Component	0000000	000000
400	125V DC/125V AC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	4 3/4"	1 1/8"	1	No	UL Recognized Component	0000000	00000
500	125V DC/125V AC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	4 3/4"	1 1/8"	1	No	UL Recognized Component	0000000	00000

Time-Delay Lift Truck 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 these fuses on battery-operated lift trucks.

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.	Protection Type	No. of Elements	Specifications Met		Each
Manufacturer Equivalent: ACK, CCK
60	125V DC/125V AC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	3 3/4"	7/8"	Time Delay	1	UL Recognized Component	0000000	000000
80	125V DC/125V AC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	4 1/2"	1 1/8"	Time Delay	1	UL Recognized Component	0000000	00000
140	125V DC/125V AC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	4 3/4"	1 1/8"	Time Delay	1	UL Recognized Component	0000000	00000
175	125V DC/125V AC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	4 3/4"	1 1/8"	Time Delay	1	UL Recognized Component	0000000	00000
200	125V DC/125V AC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	4 3/4"	1 1/8"	Time Delay	1	UL Recognized Component	0000000	00000
250	125V DC/125V AC	10,000 A @ 125 V AC 10,000 A @ 125 V DC	4 3/4"	1 1/8"	Time Delay	1	UL Recognized Component	0000000	00000