25 Amp Fuses | McMaster-Carr

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Manufacturer Equivalent Fuse

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Breakthrough Current @ Voltage

200,000 amp @ 250V AC

100,000 amp @ 480V AC

10,000 amp @ 500V AC

30,000 amp @ 500V AC

75,000 amp @ 500V AC

100,000 amp @ 500V AC

120,000 amp @ 500V AC

50,000 amp @ 600V AC

100,000 amp @ 600V AC

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Blown Fuse Indicator

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C-UL Recognized Component

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Rejection-Style End

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38 Products

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About Fuses

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.

			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
25	600V AC/500V DC	20,000 A @ 500 V DC 200,000 A @ 600 V AC	1 1/2"	13/32"	2	Ferrule	UL Listed	000000000	000000	000000

UL Class CC Time-Delay Midget Fuses for Transformers

Designed to handle high inrush currents and the initial current cycle unique to transformers, these fuses provide comparable performance with a smaller footprint than standard size fuses. Use them to protect power distribution branch circuits. They’re for use with Fuse Blocks for UL Class CC Fuses.

Fuses with a rejection-style end safeguard against replacement errors.

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	Rejection-Style End	Specifications Met		1-9	10-Up
Manufacturer Equivalent: ATQ-R, FNQ-R, KLD-R
25	600V AC/300V DC	20,000 A @ 300 V DC 200,000 A @ 600 V AC	1 1/2"	13/32"	1	Ferrule	Yes	UL Listed	0000000	000000	000000

UL Class CC Fast-Acting Midget Fuses

These fuses open circuits quickly when surges are detected. They provide comparable performance with a smaller footprint than standard size fuses. Use them in power distribution branch circuits. All have a rejection-style end that safeguards against replacement errors. 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.

			Overall						Each
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	No. of Elements	Cartridge Fuse Style	Specifications Met		1-9	10-Up
Manufacturer Equivalent: ATM-R, KLK-R, KTK-R
25	600V AC	200,000 A @ 600 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed	00000000	000000	000000

UL Class RK5 Fuses

Ferrule Style

Ferrule 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
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	000000	000000
Manufacturer Equivalent: FLN-R-ID, FRN-R-ID, TR-R-ID
25	250V AC/160V DC	20,000 A @ 160 V DC 200,000 A @ 250 V AC	2"	9/16"	2	Ferrule	Yes	UL Listed, CSA Certified	E2137	012636_0_000	00000000	00000	00000
Manufacturer Equivalent: FLS-R, FRS-R, TRS-R
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
Manufacturer Equivalent: FRS-R-ID, IDSR, TRS-R-ID
25	600V DC/600V AC	20,000 A @ 600 V DC 200,000 A @ 600 V AC	5"	13/16"	2	Ferrule	Yes	UL Listed, CSA Certified	__	__	00000000	00000	00000

UL Class J Time-Delay Fuses for Tight Spaces

Ferrule Style

Ferrule Style with Blown-Fuse Indicator

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. 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.

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		1-9	10-Up
Manufacturer Equivalent: AJT, JTD, LPJ-SP
25	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	2 1/4"	13/16"	2	Ferrule	No	UL Listed, CSA Certified	000000000	000000	000000
Manufacturer Equivalent: AJT, JTD-ID, LPJ-SPI
25	600V AC/400V DC	100,000 A @ 400 V DC 200,000 A @ 600 V AC	2 1/4"	13/16"	1	Ferrule	Yes	UL Listed, CSA Certified	0000000	00000	00000

UL Class J Fast-Acting Fuses for Tight Spaces

Ferrule 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.

			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
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	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.

			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
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	000000	000000

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.

			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
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	00000	00000
Manufacturer Equivalent: NLS, NOS, OTS
25	600V AC/300V DC	20,000 A @ 300 V DC 50,000 A @ 600 V AC	5"	13/16"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000

UL Class T Fuses for Extra-Tight Spaces

Ferrule Style

Smaller than UL Class J fuses, these fast-acting fuses can be used in extra-tight spaces such as meters, uninterruptible power supplies, and variable-speed drives. They open circuits quickly when surges are detected. Use with Fuse Blocks for UL Class T Fuses.

Breakthrough current, also known as interrupt current, 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: A6T, JJS, JLLS
25	600V AC	200,000 A @ 600 V AC	1 1/2"	9/16"	1	Ferrule	UL Listed, CSA Certified, CE Marked	000000000	000000	000000

UL Class G Time-Delay Midget 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. They have a smaller footprint than standard size fuses. Protect power distribution branch circuits from overcurrent. Use with Fuse Blocks for UL Class G 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: AG, SC, SLC
25	480V AC/300V DC	10,000 A @ 300 V DC 100,000 A @ 480 V AC	1 5/8"	13/32"	1	Ferrule	UL Listed, CSA Certified	000000000	000000	000000

Fast-Acting Glass-Tube Fuses

1/4" Dia.

These fuses open circuits quickly when surges are detected. The clear glass tube makes it easy to see when fuses open. Use them with electronics, control panels, and other sensitive components. Select them by their diameter. Designed for use with Fuse Blocks for Glass-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.

										Pkg.
Fuse Trade Size	Current, A	Voltage	Breakthrough Current	Overall Lg.	No. of Elements	Blown Fuse Indicator	Specifications Met	Pkg. Qty.		1-9	10-Up
Manufacturer Equivalent: 312, AGC, GGC
1/4" Overall Dia.
3AG	25	32V AC	300 A @ 32 V AC	1 1/4"	1	Yes	UL Listed	5	0000000	00000	00000

Time-Delay Glass-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. The clear glass tube makes it easy to see when fuses open. Use them with electronics, control panels, and other sensitive components. Select these fuses by their diameters. Designed for use with Fuse Blocks for Glass-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.

										Pkg.
Fuse Trade Size	Current, A	Voltage	Breakthrough Current	Overall Lg.	No. of Elements	Blown Fuse Indicator	Specifications Met	Pkg. Qty.		1-9	10-Up
Manufacturer Equivalent: 313, GDL, MDL
1/4" Overall Dia.
3AG	25	32V AC	300 A @ 32 V AC	1 1/4"	1	Yes	UL Recognized Component	5	0000000	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.

								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	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	00000	00000

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.

							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.
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	000000	000000

									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	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	000000	000000
Manufacturer Equivalent: 505
1/4" Overall Dia.
3AB	25	500V DC/500V AC	20,000 A @ 500 V DC 30,000 A @ 500 V AC	1 1/4"	1	UL Recognized Component, C-UL Recognized Component	5	000000000	00000	00000

Time-Delay Midget 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 them to protect equipment—they are not designed for power distribution circuits. Designed for use with Fuse Blocks for Midget 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: ATQ, FLQ, FNQ
25	500V AC	10,000 A @ 500 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	000000	00000
Manufacturer Equivalent: FLM, FNM, TRM
25	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	0000000	0000	0000

Fast-Acting Midget Fuses

These fuses open circuits quickly when surges are detected. Use them to protect equipment—they are not designed for power distribution circuits. Designed for use with Fuse Blocks for Midget 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: ATM, DCM, KLKD
25	600V AC/600V DC	10,000 A @ 600 V DC 100,000 A @ 600 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	00000000	00000	00000
Manufacturer Equivalent: ATM, KLK, KTK
25	600V AC	100,000 A @ 600 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	000000000	00000	00000
Manufacturer Equivalent: BAF, BLF, OTM
25	250V AC	10,000 A @ 250 V AC	1 1/2"	13/32"	1	Ferrule	UL Listed, CSA Certified	00000000	0000	0000

Fuses for Sensitive Electronics

Ferrule Style

With a quicker response than standard fast-acting fuses, these fuses provide the best protection for sensitive electronics.

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
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	No. of Elements	Cartridge Fuse Style	Protection Type	Specifications Met		Each
Manufacturer Equivalent: A30QS, FWX, L25S
25	250V AC	200,000 A @ 250 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	000000
Manufacturer Equivalent: A70QS, FWP, L70S
25	700V AC	200,000 A @ 700 V AC	2"	9/16"	1	Ferrule	Fast Acting	UL Recognized Component	000000000	00000

Automotive Fuses

Standard Blade Style

Mini Blade Style

Maxi Blade Style

These fuses are suitable for low-voltage automotive and other electronic applications. Use with Fuse Blocks for Automotive 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.

Fast-acting fuses open circuits quickly when surges are detected.

Time-delay fuses withstand current overload for a short time so they won't open when exposed to harmless temporary surges.

Fuses with blown fuse indicator have a light that turns on when the fuse blows.

			Overall
Current, A	Voltage	Breakthrough Current	Lg.	Ht.	Blade Ht.	Protection Type	Number of Elements	Blown Fuse Indicator	Specifications Met	Pkg. Qty.		Pkg.
Manufacturer Equivalent: 257, AF, ATC, ATO
Standard Blade Style
25	12V DC	1,000 A @ 12 V DC	3/4"	0.73"	0.25"	Fast Acting	1	Yes	__	2	00000000	00000
25	32V DC	1,000 A @ 32 V DC	3/4"	0.73"	0.25"	Fast Acting	1	No	UL Listed	5	0000000	0000
Manufacturer Equivalent: 297, AF2, ATM
Mini Blade Style
25	12V DC	1,000 A @ 12 V DC	0.43"	0.65"	0.3"	Fast Acting	1	Yes	__	2	00000000	0000
25	32V DC	1,000 A @ 32 V DC	0.43"	0.65"	0.3"	Fast Acting	1	No	UL Listed	5	00000000	0000
Manufacturer Equivalent: 299, AF3, MAX
Maxi Blade Style
25	32V DC	1,000 A @ 32 V DC	1.15"	1.35"	0.5"	Time Delay	1	No	UL Recognized Component	1	00000000	0000

European Fuses

These fuses can be used with equipment made in Europe.

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, mm						Each
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	Protection Type	No. of Elements	Specifications Met		1-9	10-Up
Type gL-gG
25	500V AC	120,000 A @ 500 V AC	38	10	Fast Acting	1	CE Marked	0000000	000000	000000

European Milk Bottle Fuses

Type gL, 25-63 amps

Type gL-gG, 25-63 amps

Also known as diazed or Type D fuses, these fuses can be used with equipment made in Europe.

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 a blown fuse indicator have a visual pin that pops out.

			Overall, mm							Each
Current, A	Voltage	Breakthrough Current	Lg.	Dia.	Tip Dia., mm	Protection Type	No. of Elements	Blown Fuse Indicator		1-4	5-Up
Type gL
25	500V AC	100,000 A @ 500 V AC	50	21.5	14	Fast Acting	1	No	0000000	000000	000000
Type gL-gG
25	500V AC	75,000 A @ 500 V AC	50	21.5	14	Fast Acting	1	Yes	0000000	0000	0000

Touch-Safe Fuses

Prevent accidental contact with electrical circuits—these fuses have an enclosed design with recessed plug-in blades. Also known as dual-element fuses, they withstand current overload for a short time so they won't open when exposed to harmless temporary surges, such as when starting a motor.

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 turns red when the fuse blows.

Fuses													DIN-Rail Mount Fuse Blocks
Current, A	UL Class	Voltage	Breakthrough Current	Ht.	Wd.	Dp.	No. of Elements	Blown Fuse Indicator	Protection Type	Specifications Met		Each		Each
Manufacturer Equivalent: TCF
25	CF	600V AC/300V DC	100,000 A @ 300 V DC 300,000 A @ 600 V AC	1.88"	3/4"	1"	2	Yes	Time Delay	UL Listed, CSA Certified, EN 63000, IEC 63000	0000000	000000	0000000	000000

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About Fuses

UL Class CC Time-Delay Midget Fuses for Motors

UL Class CC Time-Delay Midget Fuses for Transformers

UL Class CC Fast-Acting Midget Fuses

UL Class RK5 Fuses

UL Class J Time-Delay Fuses for Tight Spaces

UL Class J Fast-Acting Fuses for Tight Spaces

UL Class RK1 Fast-Acting Fuses

UL Class K5 Fuses

UL Class T Fuses for Extra-Tight Spaces

UL Class G Time-Delay Midget Fuses

Fast-Acting Glass-Tube Fuses

Time-Delay Glass-Tube Fuses

Time-Delay Ceramic-Tube Fuses

Fast-Acting Ceramic-Tube Fuses

Time-Delay Midget Fuses

Fast-Acting Midget Fuses

Fuses for Sensitive Electronics

Automotive Fuses

European Fuses

European Milk Bottle Fuses

Touch-Safe Fuses