Class H Fuses | McMaster-Carr

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About Fuses

Ferrule Style

Knife-Blade Style

Replace the current-carrying element rather than the entire fuse after the fuse breaks. Use with Fuse Blocks for UL Class H 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.

Fuses
			Overall								Replacement Elements
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	No. of Elements	Cartridge Fuse Style	Protection Type	Specifications Met		Each	Pkg. Qty.		Pkg.
Manufacturer Equivalent: REN, RF, RLN
5	250V AC	10,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Listed	00000000	000000	2	00000000	000000
10	250V AC	10,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	2	00000000	00000
15	250V AC	10,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	4	00000000	00000
20	250V AC	10,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	4	00000000	0000
30	250V AC	10,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	4	00000000	0000
40	250V AC	10,000 A @ 250 V AC	3"	13/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	2	00000000	00000
50	250V AC	10,000 A @ 250 V AC	3"	13/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	2	00000000	00000
60	250V AC	10,000 A @ 250 V AC	3"	13/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	2	00000000	0000
100	250V AC	10,000 A @ 250 V AC	5 7/8"	1 1/16"	1	Knife Blade	Fast Acting	UL Listed	00000000	00000	2	00000000	00000
200	250V AC	10,000 A @ 250 V AC	7 1/8"	1 9/16"	1	Knife Blade	Fast Acting	UL Listed	00000000	000000	2	00000000	00000
Manufacturer Equivalent: RES, RFS, RLS
10	600V AC	10,000 A @ 600 V AC	5"	13/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	2	00000000	00000
15	600V AC	10,000 A @ 600 V AC	5"	13/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	4	00000000	00000
20	600V AC	10,000 A @ 600 V AC	5"	13/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	4	00000000	00000
30	600V AC	10,000 A @ 600 V AC	5"	13/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	4	00000000	00000
50	600V AC	10,000 A @ 600 V AC	5 1/2"	1 1/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	2	00000000	00000
60	600V AC	10,000 A @ 600 V AC	5 1/2"	1 1/16"	1	Ferrule	Fast Acting	UL Listed	00000000	00000	2	00000000	00000
100	600V AC	10,000 A @ 600 V AC	7 7/8"	1 5/16"	1	Knife Blade	Fast Acting	UL Listed	00000000	000000	2	00000000	00000
200	600V AC	10,000 A @ 600 V AC	9 5/8"	1 13/16"	1	Knife Blade	Fast Acting	UL Listed	00000000	000000	2	00000000	00000

Fuse Blocks for UL Class Fuses

For 1 Fuse with Box-Lug Terminal

For 2 Fuses with Box-Lug Terminals

For 3 Fuses with Box-Lug Terminals

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	Specifications Met		Each
For Fuse Manufacturer Equivalent: NON, NLN, OT, REN, RF, RLN
1	H, K5	1/10-30	250V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	000000
1	H, K5	31-60	250V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
1	H, K5	61-100	250V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	0000000	00000
2	H, K5	1/10-30	250V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
2	H, K5	31-60	250V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
3	H, K5	1/10-30	250V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
3	H, K5	31-60	250V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
3	H, K5	61-100	250V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	0000000	000000
For Fuse Manufacturer Equivalent: NOS, NLS, OTS, RES, RFS, RLS
1	H, K5	1/10-30	600V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
1	H, K5	31-60	600V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
2	H, K5	1/10-30	600V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
2	H, K5	31-60	600V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
3	H, K5	1/10-30	600V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
3	H, K5	31-60	600V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	00000000	00000
3	H, K5	61-100	600V AC	Box-Lug Terminals	UL Listed, CSA Certified, CE Marked	0000000	000000

Fuse Block Safety Covers

Prevent accidental shocks with these snap-on safety covers. They have slotted openings for testing with probes.

For Fuse
UL Class	Current, A	Protection Type	Voltage	Lg.	Wd.	Ht.	Blown Fuse Indicator	Specifications Met		Each
H, RK1, RK5 T	0.1-30 1-30	Fast Acting, Time Delay	250V AC 600V AC	3.8"	0.75"	1.7"	No	UL Listed, CSA Certified, CE Marked	0000000	000000
H, RK1, RK5 T	0.1-30 1-30	Fast Acting, Time Delay	250V AC 600V AC	3.8"	0.75"	1.7"	Yes	UL Listed, CSA Certified, CE Marked	0000000	00000

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About Fuses

UL Class H Replaceable-Element Fuses

Fuse Blocks for UL Class Fuses

Fuse Block Safety Covers