Littelfuse-Type FLS-R Fuses

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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: FLS-R, FRS-R, TRS-R
1/4	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	000000	000000
1/2	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
1	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
1 1/4	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
1 6/10	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
2	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
2 1/2	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
3	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
3 2/10	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
4	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
5	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
6	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
6 1/4	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
7	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
8	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
10	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
12	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
15	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
17 1/2	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
20	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
25	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
30	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
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
70	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	7 7/8"	1 1/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
80	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	7 7/8"	1 1/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	00000	00000
90	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	7 7/8"	1 1/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	00000	00000
100	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	7 7/8"	1 1/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	000000	00000	00000
125	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	9 5/8"	1 5/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	000000	000000
150	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	9 5/8"	1 5/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	000000	000000
175	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	9 5/8"	1 5/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	000000	000000
200	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	9 5/8"	1 5/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	000000	000000
300	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	11 5/8"	2 11/32"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	000000	000000
400	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	11 5/8"	2 11/32"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	000000	000000
500	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	13 3/8"	2 7/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	0000000	000000	000000
600	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	13 3/8"	2 7/8"	2	Knife Blade	No	UL Listed, CSA Certified	E4273	053787_C_000	00000000	000000	000000