Grounding Buses | McMaster-Carr

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54 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)	Thread Size (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"	1"	1/4"	Linear	9/32" (2)	1/4"-20 (1), 10-32 (3)	Copper	Plastic Mounting Brackets	—	71375K69	00000	———	0
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

Grounding Blocks

Connect multiple grounding wires in tight spaces such as cabinets and enclosures. These blocks create a central grounding point for an electrical network.

				Hole
Total No. of Holes	Lg.	Wd.	Thk.	Pattern	Thread Size	For Wire Ga.	Material	Features	Mounting Hole Thread Size	Mounting Fasteners Included	Certification		Each
2	1 7/8"	3/8"	1/2"	Linear	1/4"-20	14 to 6	Tin-Plated Copper	Set Screws	8-32	No	UL Listed	2450K11	000000
3	2 1/4"	3/8"	1/2"	Linear	1/4"-20	14 to 6	Tin-Plated Copper	Set Screws	8-32	No	UL Listed	2450K1	00000
6	3 5/8"	3/8"	1/2"	Linear	1/4"-20	14 to 6	Tin-Plated Copper	Set Screws	8-32	No	UL Listed	2450K2	00000
7	4 1/8"	3/8"	1/2"	Linear	1/4"-20	14 to 6	Tin-Plated Copper	Set Screws	8-32	No	UL Listed	2450K12	00000
9	5"	3/8"	1/2"	Linear	1/4"-20	14 to 6	Tin-Plated Copper	Set Screws	8-32	No	UL Listed	2450K3	00000
12	5 3/4"	1/2"	1/2"	Linear	1/4"-28	14 to 6	Tin-Plated Copper	Set Screws	—	No	UL Listed	2450K14	00000
12	6 3/8"	3/8"	1/2"	Linear	1/4"-20	14 to 6	Tin-Plated Copper	Set Screws	8-32	No	UL Listed	2450K4	00000
15	7 3/4"	3/8"	1/2"	Linear	1/4"-20	14 to 6	Tin-Plated Copper	Set Screws	8-32	No	UL Listed	2450K13	000000

Harsh-Environment High-Current Distribution Bars


Stud Terminals 1 Circuit	Screw Terminals 2 Circuits

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

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
												300V AC 48V DC	545 amp 600 amp	8	3/8"	4	No. 8	11 3/8"	2"	2"	No	0.39"	4	CE Marked	9290T7	000000	———	0




														2 Circuits

														300V AC 48V DC	130 amp 150 amp	2	1/4"	5	No. 10	4 7/8"	2 9/16"	1 1/4"	No	0.21"	2	CE Marked	9290T11	00000	———	0

Electronics-Rack-Mount Grounding Bars

These grounding bars fit standard 19” wide electronics racks. Attach multiple grounding wires to create a central grounding point for an electrical network.

No. of Holes	Lg.	Wd.	Thk.	Hole Pattern	Features		Each
8	19 1/4"	1"	1/4"	Linear	Plastic Mounting Brackets, Mounting Hardware	8084T2	0000000

Modular Distribution Bars

Build your own distribution system for neutral and grounding applications by adding terminal blocks to these bars. Slide blocks onto the bar, also known as a bus bar, and then attach mounting brackets to the bar. All wires make contact with the bar, distributing the current among the terminal blocks.

Bars

Lg., m	Wd., mm	Ht., mm		Each
1	6	6	1529T22	000000
1	10	3	1529T21	00000

Brackets


Surface Mount	DIN-Rail Mount

		Mounting Holes
	Mounting Fasteners Included	Dia.	No. of	Pkg. Qty.		Pkg.
Surface Mount	No	0.16"	1	5	1529T31	00000
DIN-Rail Mount for DIN 3 Rails	—	—	—	5	1529T32	00000

Terminal Blocks

Terminal blocks have screw-clamp terminals that secure the wire as well as the block to the bar. Blocks are UL recognized for grounding applications.

Terminal Blocks										Terminal Block Markers
No. of Circuits	For Wire Ga.	Wire Connection	Wd., mm	Lg., mm	Ht., mm	Certification	Pkg. Qty.		Pkg.	Pkg. Qty.		Pkg.
1	22, 20, 18, 16, 14, 12, 10	Screw-Clamp Terminal	7.5	30	23.3	UL Recognized Component	5	1529T11	00000	100	1529T33	00000
1	10, 8, 6, 4	Screw-Clamp Terminal	9.8	36	23.3	UL Recognized Component	5	1529T12	0000	100	1529T34	0000
1	8, 6, 4, 2	Screw-Clamp Terminal	14.5	45	27.3	UL Recognized Component	5	1529T13	00000	100	1529T34	0000