Bus Bar Insulation | McMaster-Carr

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44 Products

Grounding Bars


	Replacement Mounts

Mount these bars wherever you need to create a central grounding point. They attach to multiple ground wires.

Replacement Mounts—Replacement mounts (sold separately) include mounting brackets, hardware, and insulators.

Grounding Bars											Replacement Mounts
				Hole
Total No. of Holes	Lg.	Wd.	Thk.	Pattern	Dia. (No. of Holes)	Material	Features	Certification		Each		Each
5	12"	2"	1/4"	Linear	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K71	000000	71375K79	000000
6	6"	2"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	—	71375K16	00000	71375K79	00000
9	6"	4"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	—	71375K11	00000	71375K79	00000
11	24"	2"	1/4"	Linear	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K72	000000	71375K79	00000
14	12"	4"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K73	000000	71375K79	00000
18	12"	2"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K18	00000	71375K79	00000
26	16"	2"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K17	000000	71375K79	00000
27	12"	4"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K12	000000	71375K79	00000
32	24"	4"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K74	000000	71375K79	00000
39	16"	4"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K13	000000	71375K79	00000
51	20"	4"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K14	000000	71375K79	00000
63	24"	4"	1/4"	Matrix	7/16"	Copper	Stainless Steel Mounting Brackets with Plastic Insulators	UL Listed	71375K15	000000	71375K79	00000

Harsh-Environment High-Current Distribution Bars


Stud Terminals 1 Circuit	Screw Terminals 2 Circuits	Stud and Screw Terminals 1 Circuit

Protect connections against corrosion. These bars are tin-plated copper and have stainless steel terminals. Also known as bus bars, they serve as connection points between wires with ring or spade terminals. The underside is sealed, so the bars can be safely mounted to conductive surfaces.

Distribution Bar Covers—Distribution bar covers protect the top of the bar and prevent accidental contact with live circuits.

	Distribution Bars															Distribution Bar Covers
			Stud Terminals		Screw Terminals						Mounting Holes
	Voltage	Current	No. per Circuit	Size	No. per Circuit	Size	Lg.	Wd.	Ht.	Mounting Fasteners Included	Dia.	No. of	Certification		Each		Each
Stud Terminals







				1 Circuit

				300V AC 48V DC	100 amp 100 amp	4	No. 10	—	—	4 3/16"	7/8"	1 1/8"	No	0.21"	2	CE Marked	9290T32	000000	9290T27	00000


				300V AC 48V DC	130 amp 150 amp	4	1/4"	—	—	5 7/8"	1 1/4"	1 1/2"	No	0.21"	2	CE Marked	9290T16	00000	9290T21	0000
				300V AC 48V DC	250 amp 250 amp	4	5/16"	—	—	5 7/8"	1 1/2"	1 11/16"	No	0.21"	2	CE Marked	9290T17	00000	9290T29	00000
				300V AC 48V DC	250 amp 250 amp	6	5/16"	—	—	7 3/4"	1 1/2"	1 11/16"	No	0.21"	2	CE Marked	9290T8	000000	9290T28	00000


				Screw Terminals







								2 Circuits

								300V AC 48V DC	100 amp 100 amp	—	—	5	No. 8	3"	1 13/16"	9/16"	No	0.21"	2	CE Marked	9290T12	00000	9290T25	00000


								300V AC 48V DC	100 amp 100 amp	—	—	10	No. 8	5 1/16"	1 13/16"	9/16"	No	0.21"	2	CE Marked	9290T13	00000	9290T26	00000


								Stud and Screw Terminals







												1 Circuit

												300V AC 48V DC	100 amp 100 amp	2	No. 10	5	No. 8	4 3/16"	7/8"	1 1/8"	No	0.21"	2	CE Marked	9290T31	00000	9290T27	0000


												300V AC 48V DC	130 amp 150 amp	2	1/4"	10	No. 8	5 7/8"	1 1/4"	1 1/2"	No	0.21"	2	CE Marked	9290T14	00000	9290T21	0000
												300V AC 48V DC	130 amp 150 amp	2	1/4"	20	No. 8	9 1/8"	1 1/4"	1 1/2"	No	0.21"	2	CE Marked	9290T15	00000	9290T24	00000
												300V AC 48V DC	250 amp 250 amp	2	5/16"	6	No. 10	5 7/8"	1 1/2"	1 11/16"	No	0.21"	2	CE Marked	9290T9	00000	9290T29	00000
												300V AC 48V DC	250 amp 250 amp	2	5/16"	12	No. 10	7 3/4"	1 1/2"	1 11/16"	No	0.21"	2	CE Marked	9290T18	00000	9290T28	00000
												300V AC 48V DC	545 amp 600 amp	4	3/8"	4	No. 8	7"	2"	2"	No	0.26"	4	CE Marked	9290T3	000000	9290T23	00000

Electrically Insulating Heat-Shrink Tubing

Insulate and protect high-voltage devices. This tubing withstands higher voltages than standard heat-shrink tubing because it’s made of a flame-retardant material with excellent electrical insulation properties. It’s orange, so it’s easy to identify.

For 2,500V AC Maximum Voltage

Image of Product. Front orientation. Heat-Shrink Tubing. Electrically Insulating Heat-Shrink Tubing.

Tubing for a maximum voltage of 2,500V AC is designed for use in electric vehicles. It shrinks at a lower temperature than 5,000V tubing, so you can avoid damaging nearby components when applying heat. This tubing meets UL 224 VW-1 for flame retardance.

Dielectric Strength—Dielectric strength is the maximum voltage a material can handle before it starts to breakdown. The higher the dielectric strength of a material, the better it is for preventing electricity, heat, or signal from dissipating from wire and cable.

	ID									5 ft. Long
	Before Shrinking	Min. After Shrinking	Min. Wall Thk. After Shrinking	For Material Circumference	Dielectric Strength, V/mil	Shrink Temp., ° F	Temp. Range, ° F	Flammability Rating	Color		Each
Polyolefin







				2:1 Shrink Ratio

				0.39"	0.18"	0.03"	0.18" to 0.39"	1,000	155	-65 to 275	UL 224 VW-1	Orange	6500N301	00000


				0.5"	0.25"	0.03"	0.25" to 0.5"	1,000	155	-65 to 275	UL 224 VW-1	Orange	6500N302	00000
				0.79"	0.37"	0.03"	0.37" to 0.79"	1,000	155	-65 to 275	UL 224 VW-1	Orange	6500N303	00000
				1.02"	0.5"	0.04"	0.5" to 1.02"	1,000	155	-65 to 275	UL 224 VW-1	Orange	6500N304	00000
				1.58"	0.75"	0.04"	0.75" to 1.58"	1,000	155	-65 to 275	UL 224 VW-1	Orange	6500N305	00000
				1.97"	0.98"	0.05"	0.98" to 1.97"	1,000	155	-65 to 275	UL 224 VW-1	Orange	6500N306	00000

For 5,000V AC Maximum Voltage

Tubing for a maximum voltage of 5,000V AC protects bus bars and other high-voltage devices. It meets ANSI C37.20 for insulating metal-enclosed equipment that generates, transmits, and distributes power.

	ID												Per Ft.
	Before Shrinking	Min. After Shrinking	Min. Wall Thk. After Shrinking	Shrink Ratio	For Material Circumference	Dielectric Strength, V/mil	Shrink Temp., ° F	Temp. Range, ° F	Specs. Met	Color	Choose a Length, ft.		1-19	20-Up
Polyolefin



		4.35"	1.67"	0.11"	2.6:1	5.43" to 8.86"	550	250	-65 to 230	ANSI/IEEE C37.20	Orange	2, 5, 10, 20	6500N16	000000	000000


		5.3"	2.04"	0.11"	2.6:1	6.67" to 10.86"	550	250	-65 to 230	ANSI/IEEE C37.20	Orange	2, 5, 10, 20	6500N17	00000	00000
		5.9"	2.33"	0.12"	2.5:1	7.57" to 12.86"	550	250	-65 to 230	ANSI/IEEE C37.20	Orange	2, 5, 10, 20	6500N18	00000	00000
		6.78"	2.55"	0.13"	2.7:1	8.28" to 13"	550	250	-65 to 230	ANSI/IEEE C37.20	Orange	2, 5, 10, 20	6500N19	00000	00000
		8.83"	3.78"	0.13"	2.3:1	12.29" to 19.23"	550	250	-65 to 230	ANSI/IEEE C37.20	Orange	2, 5, 10, 20	6500N21	000000	00000