250V DC Fuses | McMaster-Carr

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UL Class CC Time-Delay Midget Fuses for Motors

These fuses can withstand the high inrush current caused by a motor starting. They provide comparable performance with a smaller footprint than standard size fuses. All have a rejection-style end that safeguards against replacement errors. Use them to protect power distribution branch circuits. Designed 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	Specifications Met		1-9	10-Up
Manufacturer Equivalent: ATD-R, CCMR, LP-CC
35	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	1 7/8"	27/32"	2	Ferrule	UL Listed	000000000	000000	000000
40	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	1 7/8"	27/32"	2	Ferrule	UL Listed	000000000	00000	00000
45	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	1 7/8"	27/32"	2	Ferrule	UL Listed	000000000	00000	00000
50	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	1 7/8"	27/32"	2	Ferrule	UL Listed	000000000	00000	00000
60	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	1 7/8"	27/32"	2	Ferrule	UL Listed	000000000	00000	00000

UL Class RK5 Fuses

Ferrule Style

Knife-Blade Style

Ferrule Style with Blown-Fuse Indicator

Knife-Blade Style with Blown-Fuse Indicator

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.

Fuses with blown fuse indicator have a dot on the side that changes color when the fuse blows.

			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
300	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	8 5/8"	2 3/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	0000000	0000000
400	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	8 5/8"	2 3/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	000000	000000
600	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	10 3/8"	2 7/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	000000	000000
Manufacturer Equivalent: FLN-R-ID, FRN-R-ID, TR-R-ID
35	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
40	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
45	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
50	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
60	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	3"	13/16"	2	Ferrule	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
70	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	5 7/8"	1 1/16"	2	Knife Blade	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
80	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	5 7/8"	1 1/16"	2	Knife Blade	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
90	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	5 7/8"	1 1/16"	2	Knife Blade	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
100	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	5 7/8"	1 1/16"	2	Knife Blade	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
125	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	7 1/8"	1 9/16"	2	Knife Blade	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
150	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	7 1/8"	1 9/16"	2	Knife Blade	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
200	250V DC/250V AC	20,000 A @ 250 V DC 200,000 A @ 250 V AC	7 1/8"	1 9/16"	2	Knife Blade	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
Manufacturer Equivalent: FLS-R, FRS-R, TRS-R
35	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5 1/2"	1 1/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
40	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5 1/2"	1 1/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
45	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5 1/2"	1 1/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
50	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5 1/2"	1 1/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
60	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5 1/2"	1 1/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000

UL Class RK1 Time-Delay Fuses

Knife-Blade 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
100	250V DC/250V AC	100,000 A @ 250 V DC 300,000 A @ 250 V AC	5 7/8"	1 3/16"	2	Knife Blade	UL Listed, CSA Certified	00000000	000000	000000
125	250V DC/250V AC	100,000 A @ 250 V DC 300,000 A @ 250 V AC	7 1/8"	1 11/16"	2	Knife Blade	UL Listed, CSA Certified	000000000	000000	000000
200	250V DC/250V AC	100,000 A @ 250 V DC 300,000 A @ 250 V AC	7 1/8"	1 11/16"	2	Knife Blade	UL Listed, CSA Certified	00000000	000000	000000
400	250V DC/250V AC	100,000 A @ 250 V DC 300,000 A @ 250 V AC	8 5/8"	2 3/8"	2	Knife Blade	UL Listed, CSA Certified	00000000	000000	000000

UL Class RK1 Fast-Acting Fuses

Ferrule Style

These fuses open circuits quickly when surges are detected. They have a rejection-style end design that safeguards against replacement errors. 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.

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: A6K-R, KLS-R, KTS-R
1	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	000000	000000
2	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
3	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
4	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
5	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
6	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
8	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
10	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
12	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
15	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
20	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
25	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
30	600V AC/250V DC	20,000 A @ 250 V DC 200,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000

UL Class K5 Fuses

Ferrule Style

Knife-Blade 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
2	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
3	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
4	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
5	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
6	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
7	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
8	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
10	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
12	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
15	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
20	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
25	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
30	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	2"	9/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
35	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	3"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
40	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	3"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
45	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	3"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
50	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	3"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
60	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	3"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000
70	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	5 7/8"	1 1/16"	1	Knife Blade	UL Listed, CSA Certified	00000000	00000	00000
80	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	5 7/8"	1 1/16"	1	Knife Blade	UL Listed, CSA Certified	00000000	00000	00000
100	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	5 7/8"	1 1/16"	1	Knife Blade	UL Listed, CSA Certified	00000000	00000	00000
200	250V AC/250V DC	20,000 A @ 250 V DC 50,000 A @ 250 V AC	7 1/8"	1 9/16"	1	Knife Blade	UL Listed, CSA Certified	00000000	00000	00000

Inline Fuse Holders for Glass-Tube and Ceramic-Tube Fuses

Add fuse protection to a single wire.

		For Fuse
	For No. of Fuses	Trade Size	Current, A	Overall Dia.	Overall Lg.	Voltage	Wire Connection Type	For Max. Wire Gauge	Lg.	Ht.	Material	Environment		Each
For Fuse Manufacturer Equivalent: 312, 313, 314, 322, 326, 505, ABC, AGC, GAB, GBB, GDL, GGC, GSA, MDA, MDL
C	1	3AB, 3AG	1/10-20	1/4"	1 1/4"	250V AC/250V DC	Crimp On	12	3.22"	0.8"	Plastic	Washdown	0000000	000000

DIN-Rail/Surface-Mount Fuse Blocks

For 1 Fuse

For 2 Fuses

For 3 Fuses

Fuse blocks have a universal hole pattern, so they can be mounted on either DIN-rail or directly onto surfaces.

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

	For Fuse
For No. of Fuses	UL Class	Current, A	Voltage	Wire Connection Type	For DIN Rail Size, mm	Specifications Met		Each
For Fuse Manufacturer Equivalent: A2D-R, FLN-R, FRN-R, LLN-RK, LPN-RK, TR-R
1	RK1, RK5	1-30	250V AC/250V DC	Box-Lug Terminals	35	UL Listed, CSA Certified	0000000	000000
1	RK1, RK5	31-60	250V AC/250V DC	Box-Lug Terminals	35	UL Listed, CSA Certified	0000000	00000
2	RK1, RK5	1-30	250V AC/250V DC	Box-Lug Terminals	35	UL Listed, CSA Certified	0000000	00000
2	RK1, RK5	31-60	250V AC/250V DC	Box-Lug Terminals	35	UL Listed, CSA Certified	0000000	00000
3	RK1, RK5	1-30	250V AC/250V DC	Box-Lug Terminals	35	UL Listed, CSA Certified	0000000	00000
3	RK1, RK5	31-60	250V AC/250V DC	Box-Lug Terminals	35	UL Listed, CSA Certified	0000000	00000