Metric Terminals | McMaster-Carr

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	For Wire Gauge For Wire Gauge

28
26
24
22
20
18
16
14
12
10
8
6
4
2
1/0
2/0
3/0
4/0

	System of Measurement System of Measurement	Show

Metric

	System of Measurement System of Measurement	Hide

Inch

Metric

	Mounting Location Mounting Location

	DIN Rail

	Color Color

	Black
	Gray
	Blue
	Red
	Orange
	Yellow
	White
	Beige
	Green
	Green/Yellow

	For DIN Rail Height For DIN Rail Height

32 mm

35 mm

	For DIN Rail Trade Size For DIN Rail Trade Size

DIN 3

DIN 1

	Wire Connection Type Wire Connection Type


Screw-Clamp Terminals	Spring-Clamp Terminals

	Width Width

	Number of Circuits Number of Circuits

	Voltage Voltage

	Current Per Circuit Current Per Circuit

Less than 50 A

50 to 99 A

100 to 249 A

	Number of Terminals Per Circuit Number of Terminals Per Circuit

	Grounding Grounding

Non-Grounded

Grounded

	Specifications Met Specifications Met

CSA

CE Marked

	Length Length

	Height Height

	Maximum Temperature Maximum Temperature

200° to 249° F

	Minimum Temperature Minimum Temperature

-40° F

-31° F

	For Thermocouple Wire Type For Thermocouple Wire Type

	For Fuse Type For Fuse Type

	Glass
	Ceramic
	Automotive

	For Fuse Overall Diameter For Fuse Overall Diameter

5mm

1/4"

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135 Products

Modular DIN-Rail Mount Terminal Blocks

Add as many circuits as you need with these terminal blocks and accessories. The terminal blocks clip onto DIN 3 and DIN 1 rail and can be removed without disrupting adjacent blocks.

Terminal blocks, end covers, and end stops meet IP20 to protect connections from objects larger than 12.5 mm, such as fingers.

Blocks with fuse holder allow inline fuse wiring to protect components and wires from short-circuit damage.

Use blocks with disconnect tab for testing.

End covers fit on the open side of a block to prevent accidental contact with a live circuit.

End stops mount at the end of a group of blocks to prevent movement.

Jumpers connect terminals on adjacent blocks of the same width. Noninsulated jumpers can be cut to size.

For technical drawings and 3-D models, click on a part number.

Terminal Blocks—One Circuit with Screw-Clamp Terminals

One Circuit

Terminal Blocks							End Covers			End Stops			Noninsulated Jumpers
					Each			Each			Each			Each
Wd., mm	Current Per Circuit, A	For Wire Gauge	Choose a Color		1-24	25-Up		1-24	25-Up		1-24	25-Up		1-24	25-Up
600V AC/600V DC
5	30	22-12	Beige, Black, Blue, Gray, Orange, Red, White, Yellow	00000000	00000	00000	0000000	00000	00000	0000000	00000	00000	00000000	00000	00000
6	30	22-10	Beige, Black, Blue, Gray, Green, Orange, Red, White, Yellow	0000000	0000	000	0000000	000	000	0000000	000	000	0000000	0000	0000
8	50	22-8	Beige, Black, Blue, Gray, Green, Orange, Red, White, Yellow	0000000	0000	0000	0000000	000	000	0000000	000	000	0000000	0000	0000
10	65	20-6	Beige, Black, Blue, Gray, Red, White, Yellow	0000000	0000	0000	0000000	000	000	0000000	000	000	0000000	00000	0000

Terminal Blocks—Two Circuits with Screw-Clamp Terminals

Two Circuits

Terminal Blocks							End Covers			End Stops			Noninsulated Jumpers
					Each			Each			Each			Each
Wd., mm	Current Per Circuit, A	For Wire Gauge	Choose a Color		1-24	25-Up		1-24	25-Up		1-24	25-Up		1-24	25-Up
300V AC/300V DC
6	20	22-12	Beige, Black, Blue, Gray, Green, Orange, Red, White, Yellow	0000000	00000	00000	0000000	00000	00000	0000000	00000	00000	0000000	00000	00000
600V AC/600V DC
8	50	18-8	Gray	00000000	0000	0000	00000000	0000	000	0000000	0000	0000	0000000	0000	0000

Grounding Terminal Blocks—One Circuit with Screw-Clamp Terminals

One-Circuit Grounding Block

Terminal Blocks						End Stops
				Each			Each
Wd., mm	For Wire Gauge	Color		1-24	25-Up		1-24	25-Up
5	22-12	Green/Yellow	00000000	00000	00000	0000000	00000	00000
8	22-8	Green/Yellow	0000000	0000	0000	0000000	000	000

Terminal Blocks with Fuse Holder—One Circuit with Screw-Clamp Terminals

One Circuit with Fuse Holder

Terminal Blocks									End Covers			End Stops
		For Fuse					Each			Each			Each
Wd., mm	For Wire Gauge	O'all Dia.	O'all Lg.	Type	Choose a Color		1-24	25-Up		1-24	25-Up		1-24	25-Up
600V AC/600V DC
8	22-12	5mm	20mm	Ceramic, Glass	Gray, Orange	0000000	00000	00000	0000000	00000	00000	0000000	00000	00000

Terminal Blocks with Fuse Holder and Blown Fuse Indicator—One Circuit with Screw-Clamp Terminals

One Circuit with
Fuse Holder and
Blown Fuse Indicator

Terminal Blocks										End Covers			End Stops
			For Fuse					Each			Each			Each
Wd., mm	Current Per Circuit, A	For Wire Gauge	O'all Dia.	O'all Lg.	Type	Color		1-24	25-Up		1-24	25-Up		1-24	25-Up
24V DC
8	10	22-12	5mm	20mm	Ceramic, Glass	Gray	00000000	000000	000000	0000000	00000	00000	0000000	00000	00000
110V AC
8	10	22-12	5mm	20mm	Ceramic, Glass	Gray	00000000	00000	00000	0000000	000	000	0000000	000	000

Terminal Blocks with Disconnect Tab—One Circuit with Screw-Clamp Terminals

One Circuit
with
Disconnect Tab

Terminal Blocks							End Covers			End Stops			Insulated Jumpers
					Each			Each			Each			Each
Wd., mm	Current Per Circuit, A	For Wire Gauge	Color		1-24	25-Up		1-24	25-Up		1-24	25-Up		1-24	25-Up
300V AC/300V DC
6	10	22-10	Gray	0000000	00000	00000	00000000	00000	00000	0000000	00000	00000	00000000	00000	00000
8	20	22-10	Gray	0000000	0000	0000	00000000	000	000	0000000	000	000	00000000	0000	0000

Terminal Blocks for Thermocouple Wire—One Circuit with Screw-Clamp Terminals

One Circuit for
Thermocouple
Wire

Terminal Blocks							End Covers			End Stops
					Each			Each			Each
Wd., mm	For Wire Gauge	For Thermocouple Wire Type	Color		1-24	25-Up		1-24	25-Up		1-24	25-Up
500V AC/500V DC
6	24-2	J, T, K	Gray	00000000	000000	00000	0000000	00000	00000	0000000	00000	00000

Marker Cards for One- and Two-Circuit Terminal Blocks

Blank

Numbered—
For
Horizontal Rail

Numbered—For Vertical Rail

				Each
For Terminal Block Wd., mm	Number Range	Markers Per Card		1-24	25-Up
Blank
5	__	100	00000000	00000	00000
6	__	100	0000000	0000	0000
8, 10, 12, 13, 16, 22	__	100	00000000	0000	0000
Numbered—For Horizontal Rail
5	1-100	100	0000000	0000	0000
5	101-200	100	0000000	0000	0000
6	1-100	100	0000000	0000	0000
6	101-200	100	0000000	0000	0000
8, 10, 12, 13, 16, 22	1-100	100	00000000	0000	0000
8, 10, 12, 13, 16, 22	101-200	100	00000000	0000	0000
Numbered—For Vertical Rail
5	1-100	100	0000000	0000	0000
5	101-200	100	0000000	0000	0000
6	1-100	100	0000000	0000	0000
6	101-200	100	0000000	0000	0000
8, 10, 12, 13, 16, 22	1-100	100	00000000	0000	0000
8, 10, 12, 13, 16, 22	101-200	100	00000000	0000	0000

Quick and Secure Modular
DIN-Rail Mount Terminal Blocks

The spring-clamp terminals on these blocks make wire installation faster than other types of terminals. Push wire into the spring clamp for a secure connection that withstands vibration and temperature changes. Add as many circuits as you need with these terminal blocks and accessories; blocks mount side-by-side on DIN 3 rail.

Blocks with fuse holder allow inline fuse wiring to protect components and wires from short-circuit damage.

Use blocks with disconnect tab for testing.

End covers fit on the open side of a block to prevent accidental contact with a live circuit.

End stops mount at the end of a group of blocks to prevent movement.

Adjacent jumpers connect terminals on adjacent blocks of the same width. Alternate jumpers connect terminals on two blocks of the same width, skipping a block in between.

Numbered marker cards include two of each number (1-50).

Note: Prices are 15% lower when you buy 25 or more of the same size.

For technical drawings and 3-D models, click on a part number.

Terminal Blocks—One Circuit with Spring-Clamp Terminals

One Circuit with Two Terminals

Terminal Blocks								End Covers		End Stops		Adjacent Jumpers		Alternate Jumpers
Wd., mm	No. of Terminals Per Circuit	Current Per Circuit, A	For Wire Gauge	Includes	Choose a Color		Each		Each		Each		Each		Each
600V AC/600V DC
4.2	2	15	22-14	__	Black, Blue, Gray, Orange, Red, Yellow	00000000	00000	00000000	00000	00000000	00000	00000000	00000	00000000	00000
4.2	3	15	22-14	__	Black, Blue, Gray, Orange, Red, Yellow	00000000	0000	00000000	0000	00000000	0000	00000000	000	00000000	0000
4.2	4	15	22-14	__	Black, Blue, Gray, Orange, Red, Yellow	00000000	0000	00000000	0000	00000000	0000	00000000	000	00000000	0000
5	2	20	28-12	__	Black, Blue, Gray, Orange, Red, Yellow	000000	0000	00000000	0000	00000000	0000	00000000	000	00000000	0000
5	3	20	28-12	__	Black, Blue, Gray, Orange, Red, Yellow	000000	0000	00000000	0000	00000000	0000	00000000	000	00000000	0000
5	4	20	28-12	__	Black, Blue, Gray, Orange, Red, Yellow	0000000	0000	00000000	0000	00000000	0000	00000000	000	00000000	0000
6	2	20	28-12	__	Black, Blue, Gray, Orange, Red, Yellow	0000000	0000	00000000	0000	00000000	0000	00000000	0000	00000000	0000
6	3	20	28-12	__	Black, Blue, Gray, Orange, Red, Yellow	0000000	0000	00000000	0000	00000000	0000	00000000	0000	00000000	0000
6	4	20	28-12	__	Black, Blue, Gray, Orange, Red, Yellow	0000000	0000	00000000	0000	00000000	0000	00000000	0000	00000000	0000
8	2	30	24-10	__	Blue, Gray, Orange	0000000	0000	00000000	0000	00000000	0000	00000000	0000	00000000	0000
8	3	30	24-10	__	Blue, Gray, Orange	0000000	0000	00000000	0000	00000000	0000	00000000	0000	00000000	0000
10	2	50	24-8	__	Blue, Gray, Orange	0000000	0000	00000000	0000	00000000	0000	00000000	0000	00000000	0000
10	3	50	24-8	__	Blue, Gray, Orange	0000000	0000	00000000	0000	00000000	0000	00000000	0000	00000000	0000
12	2	65	24-6	__	Blue, Gray, Orange	0000000	0000	00000000	0000	00000000	0000	00000000	0000	00000000	0000
12	3	65	24-6	__	Blue, Gray, Orange	0000000	00000	00000000	0000	00000000	0000	00000000	0000	00000000	0000
16	2	115	8-2	End Covers	Blue, Gray	0000000	00000	000000	00	00000000	0000	00000000	0000	000000	00
25	2	200	4-4/0	End Covers	Blue, Gray	0000000	00000	000000	00	00000000	0000	00000000	00000	000000	00

Terminal Blocks—Two Circuits with Spring-Clamp Terminals

Two Circuits

Terminal Blocks								End Covers		End Stops		Adjacent Jumpers		Alternate Jumpers
Wd., mm	No. of Terminals Per Circuit	Current Per Circuit, A	For Wire Gauge	Includes	Choose a Color		Each		Each		Each		Each		Each
300V AC/300V DC
5	2	15	28-12	Marker Card Holder	Blue, Gray	00000000	00000	00000000	00000	00000000	00000	00000000	00000	00000000	00000
600V AC/600V DC
6	2	20	28-12	Marker Card Holder	Blue, Gray	00000000	0000	00000000	0000	00000000	0000	00000000	0000	00000000	0000

Terminal Blocks—Three Circuits with Spring-Clamp Terminals

Three Circuits

Terminal Blocks								End Covers		End Stops		Adjacent Jumpers		Alternate Jumpers
Wd., mm	No. of Terminals Per Circuit	Current Per Circuit, A	For Wire Gauge	Includes	Choose a Color		Each		Each		Each		Each		Each
300V AC/300V DC
5	2	15	28-12	Marker Card Holder	Blue, Gray	00000000	000000	00000000	00000	00000000	00000	00000000	00000	00000000	00000

Grounding Terminal Blocks—One Circuit with Spring-Clamp Terminals

One-Circuit
Grounding Block
with Two Terminals

Terminal Blocks						End Covers		End Stops		Adjacent Jumpers
Wd., mm	Choose a No. of Terminals Per Circuit	For Wire Gauge	Color		Each		Each		Each		Each
4.2	2, 3, 4	22-14	Green/Yellow	00000000	00000	00000000	00000	00000000	00000	000000	00
5	2, 3, 4	28-12	Green/Yellow	0000000	0000	00000000	0000	00000000	0000	00000000	00000
6	2, 3, 4	28-12	Green/Yellow	0000000	0000	00000000	0000	00000000	0000	00000000	000
8	2, 3	24-10	Green/Yellow	0000000	00000	00000000	0000	00000000	0000	00000000	0000
10	2, 3	24-8	Green/Yellow	0000000	00000	00000000	0000	00000000	0000	00000000	0000
12	2, 3	24-6	Green/Yellow	0000000	00000	00000000	0000	00000000	0000	00000000	0000
16	2	8-2	Green/Yellow	0000000	00000	000000	00	00000000	0000	000000	00
25	2	4-4/0	Green/Yellow	00000000	00000	000000	00	00000000	0000	000000	00

Grounding Terminal Blocks—Two Circuits with Spring-Clamp Terminals

Two-Circuit Grounding Block

Terminal Blocks							End Covers		End Stops		Adjacent Jumpers
Wd., mm	No. of Terminals Per Circuit	For Wire Gauge	Includes	Color		Each		Each		Each		Each
5	2	28-12	Marker Card Holder	Green/Yellow	00000000	000000	00000000	00000	00000000	00000	00000000	00000

Terminal Blocks with Fuse Holder—One Circuit with Spring-Clamp Terminals

One Circuit with Fuse Holder

Terminal Blocks
				For Fuse						End Covers		End Stops		Adjacent Jumpers
Wd., mm	No. of Terminals Per Circuit	Current Per Circuit, A	For Wire Gauge	Trade Size	O'all Dia.	Type	Color		Each		Each		Each		Each
600V AC/600V DC
8	2	10	28-12	__	5mm	Ceramic, Glass	Gray	000000	000000	000000	00000	00000000	00000	00000000	00000
8	2	30	24-10	__	__	Automotive	Gray	000000	00000	000000	0000	00000000	0000	00000000	0000
10	2	10	28-12	3AG	1/4"	Glass	Gray	000000	00000	000000	0000	00000000	0000	00000000	0000

Terminal Blocks with Fuse Holder and Blown Fuse Indicator—One Circuit with Spring-Clamp Terminals

One Circuit with
Fuse Holder and
Blown Fuse Indicator

Terminal Blocks
				For Fuse						End Covers		End Stops		Adjacent Jumpers
Wd., mm	No. of Terminals Per Circuit	Current Per Circuit, A	For Wire Gauge	Trade Size	O'all Dia.	Type	Color		Each		Each		Each		Each
24V AC/24V DC
8	2	30	24-10	__	__	Automotive	Gray	0000000	000000	000000	00000	00000000	00000	00000000	00000
110V AC/110V DC
8	2	10	28-12	__	5mm	Ceramic, Glass	Gray	0000000	00000	000000	0000	00000000	0000	00000000	0000
10	2	10	28-12	3AG	1/4"	Glass	Gray	0000000	00000	000000	0000	00000000	0000	00000000	0000

Terminal Blocks with Disconnect Tab—One Circuit with Spring-Clamp Terminals