Fast Acting Fuses For Tight Spaces

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21 Products

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About Fuses

Ferrule Style

Knife-Blade Style

These fuses open circuits quickly when surges are detected. More compact than UL Class RK1 or RK5 fuses, they are suitable for tight spaces. Use with Fuse Blocks for UL Class J 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: A4J, JKS, JLS
1	600V AC	200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	000000	000000
3	600V AC	200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
4	600V AC	200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
5	600V AC	200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
6	600V AC	200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
8	600V AC	200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
10	600V AC	200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
12	600V AC	200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
15	600V AC/200V DC	10,000 A @ 200 V DC 200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
20	600V AC/200V DC	10,000 A @ 200 V DC 200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
25	600V AC/200V DC	10,000 A @ 200 V DC 200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
30	600V AC/200V DC	10,000 A @ 200 V DC 200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
35	600V AC	200,000 A @ 600 V AC	2 13/32"	1 1/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
40	600V AC/175V DC	10,000 A @ 175 V DC 200,000 A @ 600 V AC	2 3/8"	1 1/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
45	600V AC	200,000 A @ 600 V AC	2 13/32"	1 1/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
50	600V AC/175V DC	10,000 A @ 175 V DC 200,000 A @ 600 V AC	2 3/8"	1 1/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
60	600V AC/175V DC	10,000 A @ 175 V DC 200,000 A @ 600 V AC	2 3/8"	1 1/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
80	600V AC	200,000 A @ 600 V AC	4 5/8"	1 1/8"	1	Knife Blade	UL Listed, CSA Certified	00000000	00000	00000
100	600V AC	200,000 A @ 600 V AC	4 5/8"	1 1/8"	1	Knife Blade	UL Listed, CSA Certified	00000000	00000	00000
200	600V AC	200,000 A @ 600 V AC	5 3/4"	1 5/8"	1	Knife Blade	UL Listed, CSA Certified	0000000	000000	000000
400	600V AC	200,000 A @ 600 V AC	7 1/8"	2 1/8"	1	Knife Blade	UL Listed, CSA Certified	0000000	000000	000000

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About Fuses

UL Class J Fast-Acting Fuses for Tight Spaces