300V AC Fuses | McMaster-Carr

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10,000 amp @ 300V AC

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44 Products

UL Class T Fuses for Extra-Tight Spaces


Ferrule Cartridge Fuse	Knife-Blade Cartridge Fuse

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 @ Voltage—Breakthrough current at voltage, labeled on the fuse as IR, is the maximum current that a fuse can safely stop in the event of a short circuit.

													Each
	Current, amp	Fuse UL Class	Voltage	Breakthrough Current @ Voltage	Overall Lg.	No. of Elements	Cartridge Fuse Type	Fuse Protection Type	With Blown Fuse Indicator	Rejection-Style End	Certification		1-9	10-Up
Manufacturer Equivalent Fuse: A3T, JJN, JLLN







				7/16" Overall Diameter

				3	T	300V AC	200,000 amp @ 300V AC	7/8"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	000000000	000000	000000


				10	T	300V AC	200,000 amp @ 300V AC	7/8"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	000000000	00000	00000
				15	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	7/8"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	000000000	00000	00000
				20	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	7/8"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	000000000	00000	00000
				30	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	7/8"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	000000000	00000	00000




						9/16" Overall Diameter

						35	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	7/8"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	000000000	00000	00000


						40	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	7/8"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	000000000	00000	00000
						50	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	7/8"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	000000000	00000	00000
						60	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	7/8"	1	Ferrule	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	000000000	00000	00000




								3/4" Overall Diameter

								80	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	2 3/16"	1	Knife Blade	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	00000000	00000	00000


								100	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	2 3/16"	1	Knife Blade	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	00000000	00000	00000




										7/8" Overall Diameter

										150	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	2 7/16"	1	Knife Blade	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	00000000	00000	00000


										200	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	2 7/16"	1	Knife Blade	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	00000000	00000	00000




												1" Overall Diameter

												300	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	2 3/4"	1	Knife Blade	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	00000000	000000	000000


												400	T	300V AC, 160V DC	200,000 amp @ 300V AC 20,000 amp @ 160V DC	2 3/4"	1	Knife Blade	Fast Acting	No	No	UL Listed, CSA Certified, CE Marked	00000000	000000	00000

Inline Fuse Holders


		Panel Cutout

Add an inline fuse to an existing circuit. This holder is for use with both time-delay and fast-acting inline fuses.

							For Panel Cutout
	For No. of Fuses	For Fuse Current, amp	Voltage, V AC	Wire Connection	No. of Wire Leads	Wire Lead Lg.	Ht.	Wd.	Mounting Location	Lg.	Certification		Each
For Fuse Manufacturer Equivalent: LGR, LMF



		1	1/2 to 10	300	Wire Leads	2	7"	0.75"	0.88"	Inline, Panel	2.25"	UL Recognized Component	00000000	00000

Clips

		Each
Panel-Mount Clips	00000000	00000

Fast-Acting Inline Fuses

Also known as LGR fuses, these fuses protect fluorescent light fixtures. They open circuits quickly when surges are detected. You'll need both a fuse and a fuse holder (not included) to add an inline fuse to an existing circuit. Fuses have a built-in cap that securely connects to the fuse holder.

Breakthrough Current @ Voltage—Breakthrough current at voltage, labeled on the fuse as IR, is the maximum current that a fuse can safely stop in the event of a short circuit.

	Fuses										Fuse Holders
	Current, amp	Voltage, V AC	Breakthrough Current @ Voltage	Overall Lg.	No. of Elements	Fuse Protection Type	With Blown Fuse Indicator	Certification		Each		Each
Manufacturer Equivalent Fuse: GLR, LGR, SLR







				0.61" Overall Diameter

				1	300	10,000 amp @ 300V AC	1.82"	1	Fast Acting	No	UL Listed, CSA Certified	000000000	00000	00000000	00000


				1 1/2	300	10,000 amp @ 300V AC	1.82"	1	Fast Acting	No	UL Listed, CSA Certified	000000000	0000	00000000	0000
				2	300	10,000 amp @ 300V AC	1.82"	1	Fast Acting	No	UL Listed, CSA Certified	000000000	0000	00000000	0000
				3	300	10,000 amp @ 300V AC	1.82"	1	Fast Acting	No	UL Listed, CSA Certified	000000000	0000	00000000	0000
				4	300	10,000 amp @ 300V AC	1.82"	1	Fast Acting	No	UL Listed, CSA Certified	000000000	0000	00000000	0000
				5	300	10,000 amp @ 300V AC	1.82"	1	Fast Acting	No	UL Listed, CSA Certified	000000000	0000	00000000	0000
				10	300	10,000 amp @ 300V AC	1.82"	1	Fast Acting	No	UL Listed, CSA Certified	000000000	0000	00000000	0000

Clips

		Each
Panel-Mount Clips	00000000	00000

Fuse Blocks for Glass-Tube and Ceramic-Tube Fuses


For 1 Fuse, 45° Elbow Quick-Disconnect Terminal Wire Connection	For 2 Fuses, 45° Elbow Quick-Disconnect Terminal Wire Connection	For 10 Fuses, 40° Elbow Quick-Disconnect Terminal Wire Connection

For 10 Fuses, Straight Quick-Disconnect Terminal Wire Connection	For 10 Fuses, Screw-Terminal Wire Connection

These fuse blocks fit _¼" glass- and ceramic-tube fuses. All have spring clips that hold fuses securely, yet allow for quick changes.

		For Fuse								Quick-Disconnect
	For No. of Fuses	Trade Size	Current, amp	Overall Dia.	Overall Lg.	Type	Voltage, V AC	Wire Connection	Features	Tab Wd.	Tab Shape	Certification		Each
For Fuse Manufacturer Equivalent: 312, 313, 314, 322, 326, 505, ABC, AGC, GAB, GBB, GDL, GGC, GSA, MDA, MDL



		1	3AB, 3AG	1/10 to 20	1/4"	1 1/4"	Ceramic, Glass	300	Quick-Disconnect Terminal	Spring Clips	0.187"	45° Elbow	UL Recognized Component	0000000	00000


		1	3AB, 3AG	1/10 to 30	1/4"	1 1/4"	Ceramic, Glass	300	Quick-Disconnect Terminal	Spring Clips	0.25"	45° Elbow	UL Recognized Component	0000000	0000
		2	3AB, 3AG	1/10 to 20	1/4"	1 1/4"	Ceramic, Glass	300	Quick-Disconnect Terminal	Spring Clips	0.187"	45° Elbow	UL Recognized Component	0000000	0000
		2	3AB, 3AG	1/10 to 30	1/4"	1 1/4"	Ceramic, Glass	300	Quick-Disconnect Terminal	Spring Clips	0.25"	45° Elbow	UL Recognized Component	0000000	0000
		10	3AB, 3AG	1/10 to 20	1/4"	1 1/4"	Ceramic, Glass	300	Quick-Disconnect Terminal	Spring Clips	0.187"	40° Elbow	UL Recognized Component	000000	00000
		10	3AB, 3AG	1/10 to 20	1/4"	1 1/4"	Ceramic, Glass	300	Quick-Disconnect Terminal	Spring Clips	0.187"	Straight	UL Recognized Component	000000	00000
		10	3AB, 3AG	1/10 to 20	1/4"	1 1/4"	Ceramic, Glass	300	Quick-Disconnect Terminal	Spring Clips	0.25"	40° Elbow	UL Recognized Component	000000	00000
		10	3AB, 3AG	1/10 to 20	1/4"	1 1/4"	Ceramic, Glass	300	Quick-Disconnect Terminal	Spring Clips	0.25"	Straight	UL Recognized Component	000000	00000
		10	3AB, 3AG	1/10 to 30	1/4"	1 1/4"	Ceramic, Glass	300	Screw Terminal	Spring Clips	—	—	UL Recognized Component	000000	00000

Time-Delay Inline Fuses

Able to withstand current overload for a short time, these fuses will not open when exposed to harmless temporary surges. They are designed to handle high inrush loads from ballast transformers in fluorescent lighting systems. You'll need both a fuse and a fuse holder (not included) to add an inline fuse to an existing circuit. Fuses have a built-in cap that securely connects to the fuse holder. Also known as LMF fuses.

Breakthrough Current @ Voltage—Breakthrough current at voltage, labeled on the fuse as IR, is the maximum current that a fuse can safely stop in the event of a short circuit.

	Fuses										Fuse Holders
	Current, amp	Voltage, V AC	Breakthrough Current @ Voltage	Overall Lg.	No. of Elements	Fuse Protection Type	With Blown Fuse Indicator	Certification		Each		Each
Manufacturer Equivalent Fuse: LMF, SMF







				0.61" Overall Diameter

				1/2	300	10,000 amp @ 300V AC	1.82"	1	Time Delay	No	UL Listed, CSA Certified	000000000	00000	00000000	00000


				1	300	10,000 amp @ 300V AC	1.82"	1	Time Delay	No	UL Listed, CSA Certified	000000000	0000	00000000	0000
				1 6/10	300	10,000 amp @ 300V AC	1.82"	1	Time Delay	No	UL Listed, CSA Certified	000000000	0000	00000000	0000
				2	300	10,000 amp @ 300V AC	1.82"	1	Time Delay	No	UL Listed, CSA Certified	000000000	0000	00000000	0000
				3 2/10	300	10,000 amp @ 300V AC	1.82"	1	Time Delay	No	UL Listed, CSA Certified	000000000	0000	00000000	0000

Clips

		Each
Panel-Mount Clips	00000000	00000

Panel-Mount Fuse Holders for Glass-Tube and Ceramic-Tube Fuses


For 2AG Fuses with 90° Elbow Quick-Disconnect Terminal	Panel Cutout for Holders for 2AG Fuses

Insert glass- and ceramic-tube fuses into holders and twist the cover closed.

		For Fuse						Quick-Disconnect Tab		For Panel Cutout
	For No. of Fuses	Trade Size	Current, amp	Overall Dia.	Overall Lg.	Voltage, V AC	Wire Connection	Wd.	Shape	Ht.	Wd.	For Panel Thk.	Mounting Location	Lg.	Material	Certification		Each
For Fuse Manufacturer Equivalent: 225, 229, C519, C520, SMG, STG



		1	2AG	3/8 to 10	0.18"	0.57"	300	Quick-Disconnect Terminal	0.11"	90° Elbow	0.44"	0.39"	0.25"	Panel	0.93"	Plastic	UL Recognized Component	0000000	000000

Fuse Blocks for UL Class Fuses


For 2 Fuses, Box-Lug-Terminal Wire Connection	For 3 Fuses, Box-Lug-Terminal Wire Connection

		For Fuse
	For No. of Fuses	UL Class	Current, amp	Type	Voltage, V AC	Wire Connection	Certification		Each
For Fuse Manufacturer Equivalent: A3T, JJN, JLLN



		2	T	1/2 to 30	Cartridge	300	Box-Lug Terminal	UL Listed, CSA Certified, CE Marked	00000000	000000


		2	T	31 to 60	Cartridge	300	Box-Lug Terminal	UL Listed, CSA Certified, CE Marked	00000000	00000
		3	T	1/2 to 30	Cartridge	300	Box-Lug Terminal	UL Listed, CSA Certified, CE Marked	00000000	00000
		3	T	31 to 60	Cartridge	300	Box-Lug Terminal	UL Listed, CSA Certified, CE Marked	00000000	00000
		3	T	61 to 100	Cartridge	300	Box-Lug Terminal	UL Listed, CSA Certified, CE Marked	00000000	000000