Type K Thermocouple Connectors

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92 Products

Thermocouple Connectors


Flat-Pin Mini Male Connector	Flat-Pin Mini Female Connector	Round-Pin Male Connector	Round-Pin Female Connector

Simplify connecting your thermocouple to thermometers and control panels—these connectors give your thermocouple a plug-in connection. To attach them to your thermocouple, first remove the panel on these connectors to expose the terminals. Then insert your thermocouple wire leads, tighten the terminals, and reattach the panel.

					Material		Male Connection		Female Connection
	Thermocouple Type	For Max. Wire Ga.	Color	Distance Between Pins	Body	Contact		Each		Each
Flat-Pin Mini Thermocouple Connectors—400° F Max. Temp.







				Screw-Terminal Wire Connection

				K	24	Yellow	0.313"	Plastic	Nickel	3869K35	00000	3869K34	00000


				Flat-Pin Mini Thermocouple Connectors—800° F Max. Temp.







								Screw-Terminal Wire Connection

								K	24	Red	0.313"	Plastic	Nickel	3869K42	0000	3869K45	0000


								Round-Pin Thermocouple Connectors—400° F Max. Temp.







												Screw-Terminal Wire Connection

												K	14	Yellow	0.438"	Plastic	Nickel	3869K25	0000	3869K24	0000


												Round-Pin Thermocouple Connectors—800° F Max. Temp.







																Screw-Terminal Wire Connection

																K	14	Red	0.438"	Plastic	Nickel	3869K52	00000	3869K55	00000

Panel-Mount Thermocouple Connector Strips

Create an easy way to plug in multiple thermocouples—these connector strips mount directly into your control panel. With at least two connections on each strip, you can plug in multiple thermocouples to monitor temperature at different points in your process. Each socket is numbered to help identify thermocouples and keep your wires organized. Choose a connector strip with a thermocouple type that matches the type of thermocouple you’re plugging in. You should also make sure the equipment you’re connecting it to is also compatible with the same thermocouple type.

Flat-Pin Mini Thermocouple Connector Connection—Connection strips for flat-pin mini thermocouple connectors install from the rear of your panel. They snap into place with spring clips.

Round-Pin Thermocouple Connector Connection—Connection strips for round-pin thermocouple connectors install from the front of your panel. Just tighten the screws on the front of the strip and T-nuts will hold it in place against your panel.

Mounting Frames—Add a mounting frame (sold separately) if your panel opening is larger than the cutout dimensions. When using a mounting frame, install your connection strip into the frame before attaching the entire assembly to your panel opening. Use the frame's mounting holes to secure your fasteners.

	Connectors											Mounting Frames
				For Panel Cutout			Material
	Thermocouple Type	No. of Connections	For Max. Wire Ga.	Wd.	Ht.	Color	Body	Contact	Fasteners Included		Each		Each
Female Flat-Pin Mini Thermocouple Connectors—400° F Max. Temp.
Flat-Pin Strip






				Screw-Terminal Wire Connection

				K	2	24	1 1/4"	1"	Yellow	Plastic	Nickel	Yes	3921K22	000000	5991N11	000000


				K	4	24	2 5/8"	1"	Yellow	Plastic	Nickel	Yes	3921K25	00000	5991N12	00000
				K	6	24	4"	1"	Yellow	Plastic	Nickel	Yes	3921K28	00000	5991N13	00000
				K	8	24	5 3/8"	1"	Yellow	Plastic	Nickel	Yes	3921K32	00000	5991N14	00000


				Female Flat-Pin Mini Thermocouple Connectors—800° F Max. Temp.
				Flat-Pin Strip






								Screw-Terminal Wire Connection

								K	2	24	1 1/4"	1"	Red	Plastic	Nickel	Yes	3921K215	00000	5991N11	00000


								K	4	24	2 5/8"	1"	Red	Plastic	Nickel	Yes	3921K216	00000	5991N12	00000
								K	6	24	4"	1"	Red	Plastic	Nickel	Yes	3921K217	00000	5991N13	00000
								K	8	24	5 3/8"	1"	Red	Plastic	Nickel	Yes	3921K218	000000	5991N14	00000


								Female Round-Pin Thermocouple Connectors—400° F Max. Temp.
								Round-Pin Strip






												Screw-Terminal Wire Connection

												K	2	16	1 5/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	3921K42	00000	5991N15	00000


												K	4	16	2 13/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	3921K45	00000	5991N16	00000
												K	6	16	4 5/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	3921K48	00000	5991N17	00000
												K	8	16	5 13/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	3921K52	00000	5991N18	00000
												K	10	16	7 5/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	3921K233	00000	5991N19	00000
												K	12	16	8 13/16"	1 1/4"	Yellow	Plastic	Nickel	Yes	3921K235	000000	5991N21	00000


												Female Round-Pin Thermocouple Connectors—800° F Max. Temp.
												Round-Pin Strip






																Screw-Terminal Wire Connection

K	2															16	1 5/16"	1 1/4"	Red	Plastic	Nickel	Yes	3921K228	00000	5991N15	00000


K	4															16	2 13/16"	1 1/4"	Red	Plastic	Nickel	Yes	3921K229	00000	5991N16	00000
K	6	16														4 5/16"	1 1/4"	Red	Plastic	Nickel	Yes	3921K231	00000	5991N17	00000
K	8	16	5 13/16"													1 1/4"	Red	Plastic	Nickel	Yes	3921K232	000000	5991N18	00000
K	10	16	7 5/16"													1 1/4"	Red	Plastic	Nickel	Yes	3921K234	000000	5991N19	00000
K	12	16	8 13/16"													1 1/4"	Red	Plastic	Nickel	Yes	3921K236	000000	5991N21	00000

Quick-Wire Thermocouple Connectors


	Male Connector	Female Connector

No need to take these connectors apart to wire them—just insert your wire leads and tighten the terminals to quickly give your thermocouple a plug-in connection. Choose a connector with the same thermocouple type as the thermocouple you’re attaching. You should also make sure the equipment you’re plugging these connectors into is also compatible with the same thermocouple type.

					Material		Male Connection			Female Connection
	Thermocouple Type	For Max. Wire Ga.	Color	Distance Between Pins	Body	Contact	Pin Lg.		Each		Each
Round-Pin Thermocouple Connectors—400° F Max. Temp.







				Screw-Terminal Wire Connection

				K	14	Yellow	0.438"	Plastic	Nickel	9/16"	3869K17	00000	3869K14	00000


				Round-Pin Thermocouple Connectors—800° F Max. Temp.







								Screw-Terminal Wire Connection

								K	14	Red	0.438"	Plastic	Nickel	9/16"	3869K58	00000	3869K64	00000


								Round-Pin Thermocouple Connectors—1,000° F Max. Temp.







												Screw-Terminal Wire Connection

												K	14	White	0.442"	Ceramic	Nickel	1/2"	3869K92	00000	3869K95	00000

Panel-Mount Thermocouple Connectors


Flat-Pin Connector	Round-Pin Connector

Create a connection point on a control panel to plug in thermocouples. These connectors can be wired and installed entirely from the front of your panel.

							Material
	Thermocouple Type	No. of Connections	For Max. Wire Ga.	For Panel Cutout Dia.	For Knockout Trade Size	Color	Body	Contact	Fasteners Included	Includes		Each
Female Flat-Pin Mini Thermocouple Connectors—400° F Max. Temp.







				Screw-Terminal Wire Connection

				K	1	20	7/8", 1 1/8"	1/2, 3/4	Yellow	Plastic	Nickel	Yes	Knockout Adapter	3869K48	000000


				Female Flat-Pin Mini Thermocouple Connectors—800° F Max. Temp.







								Screw-Terminal Wire Connection

								K	1	20	7/8", 1 1/8"	1/2, 3/4	Red	Plastic	Nickel	Yes	Knockout Adapter	3869K102	00000


								Female Round-Pin Thermocouple Connectors—400° F Max. Temp.







												Screw-Terminal Wire Connection

												K	1	14	1 1/8"	3/4	Yellow	Plastic	Nickel	Yes	—	3869K67	00000


												Female Round-Pin Thermocouple Connectors—800° F Max. Temp.







																Screw-Terminal Wire Connection

																K	1	14	1 1/8"	3/4	Red	Plastic	Nickel	Yes	—	3869K106	00000


																Female Round-Pin Thermocouple Connectors—1,000° F Max. Temp.







																				Screw-Terminal Wire Connection

																				K	1	14	1 1/8"	3/4	White	Ceramic	Nickel	Yes	—	3869K107	00000

Thermocouple Connector Adapters

Convert round-pin thermocouple connectors to flat-pin mini thermocouple connectors.

						Material
	Thermocouple Type	Max. Temp., ° F	Color	Pin Lg.	Distance Between Pins	Body	Contact		Each
Female Round-Pin Thermocouple Connector × Male Flat-Pin Mini Thermocouple Connector



		K	400	Yellow	7/16"	0.438"	Plastic	Nickel	3869K71	000000

Thermocouple Cords with Connectors


Straight Cable with Flat-Pin Mini Male × Female Connector	Straight Cable with Flat-Pin Mini Male × Male Connector	Straight Cable with Round-Pin Male × Female Connector

Coiled Cable with Flat-Pin Mini Male × Female Connector	Coiled Cable with Flat-Pin Mini Male × Male Connector

Extend the reach of your thermocouple probe—plug-in connectors on both ends of these cords speed up installation.

Coiled Cable—Coiled cable stays neat and compact for easy storage. You can stretch it out to extend its reach.

				Wire		Material
	Thermocouple Type	Temp. Range, ° F	Lg., ft.	AWG	Dia.	Insulation	Jacket	Max. Jacket Temp., ° F		Each
Straight Cable—Solid Wire







				Flat-Pin Mini Male × Flat-Pin Mini Female Connector

				K	-15 to 220	10	24	0.17"	PVC	PVC	220	3873K212	000000


				K	-15 to 220	25	24	0.17"	PVC	PVC	220	3873K222	00000
				K	-15 to 220	50	24	0.17"	PVC	PVC	220	3873K232	00000




						Flat-Pin Mini Male × Flat-Pin Mini Male Connector

						K	-15 to 220	10	24	0.17"	PVC	PVC	220	3873K65	00000


						K	-15 to 220	25	24	0.17"	PVC	PVC	220	3873K68	00000




								Round-Pin Male × Round-Pin Female Connector

								K	-15 to 220	10	24	0.17"	PVC	PVC	220	3873K242	00000


								K	-15 to 220	25	24	0.17"	PVC	PVC	220	3873K252	00000
								K	-15 to 220	50	24	0.17"	PVC	PVC	220	3873K262	00000


								Coiled Cable—Stranded Wire







												Flat-Pin Mini Male × Flat-Pin Mini Female Connector

												K	-30 to 220	5	28	0.165"	PTFE	Polyurethane Rubber	220	3873K272	00000




														Flat-Pin Mini Male × Flat-Pin Mini Male Connector

														K	-30 to 220	5	28	0.165"	PTFE	Polyurethane Rubber	220	3873K62	00000

Terminal Blocks for RTD and Thermocouple Connection Heads


Oblong	Round

These terminal blocks fit inside connection heads for thermocouples and RTD. Make sure the block has enough circuits for your probe, and use a wire that matches your probe type. You can insert stripped wire directly or attach a terminal to prevent damage from the fastener.

												Mounting Slots
	No. of Circuits	For Max. Wire Ga.	Wire Connection	Dia.	Ht.	Wd.	Dp.	For Thermocouple Type	For RTD Probe Resistance, ohm	Max. Temp., ° F	Material	Ht.	Wd.	No. of		Each
Oblong



		2	14	Screw Terminal	—	1 3/8"	2"	1"	J, JX, K, KK, KX, T, TX	100; 1,000	1,000	Ceramic	3/16"	9/16"	2	38705K82	000000


		3	14	Screw Terminal	—	1 3/8"	2"	1"	J, JX, K, KK, KX, T, TX	100; 1,000	1,000	Ceramic	3/16"	9/16"	2	38705K83	00000
		4	14	Screw Terminal	—	1 3/8"	2"	1"	J, JX, K, KK, KX, T, TX	100; 1,000	1,000	Ceramic	3/16"	9/16"	2	5927N11	00000
		6	14	Screw Terminal	—	1 3/8"	2"	1"	J, JX, K, KK, KX, T, TX	100; 1,000	1,000	Ceramic	3/16"	9/16"	2	5927N12	00000


		Round



				2	14	Screw Terminal	1 15/16"	—	—	3/4"	J, JX, K, KK, KX, T, TX	100; 1,000	1,000	Ceramic	3/16"	5/16"	2	5927N13	00000


				3	14	Screw Terminal	1 15/16"	—	—	3/4"	J, JX, K, KK, KX, T, TX	100; 1,000	1,000	Ceramic	3/16"	5/16"	2	5927N14	00000
				4	14	Screw Terminal	1 15/16"	—	—	3/4"	J, JX, K, KK, KX, T, TX	100; 1,000	1,000	Ceramic	3/16"	5/16"	2	5927N15	00000
				6	14	Screw Terminal	1 15/16"	—	—	3/4"	J, JX, K, KK, KX, T, TX	100; 1,000	1,000	Ceramic	3/16"	5/16"	2	5927N16	00000

Threaded Thermocouple Connectors


Flat-Pin Connector	Round-Pin Connector

Thread these connectors into a hole for an easy way to plug in a thermocouple. With the wire leads in the back, connect them to controllers, thermometers, and other temperature reading devices.

				Process			Wire Lead		Material
	Thermocouple Type	No. of Connections	Temp. Range, ° F	Pipe Size	Thread Type	Gender	AWG	Lg.	Body	Cable	Cable Lg., ft.	Max. Cable Temp., ° F		Each
Female Flat-Pin Mini Thermocouple Connectors







				Wire Lead Connection

				K	1	-40 to 390	1/2	NPT	Male	24	2"	Stainless Steel	FEP	10	400	3877K22	0000000


				Female Round-Pin Thermocouple Connectors







								Wire Lead Connection

								K	1	-40 to 390	3/4	NPT	Male	24	2"	Stainless Steel	FEP	10	400	3877K25	000000

Spade Terminal Assortments for Thermocouples

Made from the same material as thermocouples, these terminals ensure solid thermocouple signals and precise readings. To install, squeeze the barrel evenly and securely onto the wire with a crimping tool, slide the terminal under the screw head, and tighten.

Noninsulated—The basic, economical option when short circuits from nearby wiring aren't a concern.

					Spade
	For Thermocouple Type	No. of Pieces	Includes	For Screw Size	Wd.	Thk.	Terminal Material	Max. Temp., ° F		Each
Noninsulated



		K	10	Five Spade Terminals of Each Material (22 to 18 AWG)	No. 6	0.30"	0.03"	Alumel Nickel Chromel Nickel	300	5657N12	000000

Conduit-Mount Thermocouple Connector Strips


Flat-Pin Strip	Round-Pin Strip

Already mounted in a conduit box, these connector strips save you the effort of modifying a panel for installation. With six connections on each strip, you can plug in multiple thermocouples to monitor temperature at different points in your process. The sockets are numbered to help you identify thermocouples and keep your wires organized.

To install, remove the connector strip from the conduit box, then pull your wiring through. Attach the box to your conduit, wire up the back of the connector strip, and reattach it to the conduit box. Then just plug your thermocouples into the strip.

				Body				Material		Conduit Connection
	Thermocouple Type	No. of Connections	For Max. Wire Ga.	Lg.	Wd.	Ht.	Color	Body	Contact	Pipe Size	Thread Type	Gender		Each
Female Flat-Pin Mini Thermocouple Connectors—400° F Max. Temp.







				Screw-Terminal Wire Connection

				K	6	24	4 9/16"	2 13/16"	2 1/4"	Yellow	Aluminum	Nickel	3/4	NPT	Female	5974N12	000000


				Female Round-Pin Thermocouple Connectors—400° F Max. Temp.







								Screw-Terminal Wire Connection

								K	6	20	4 9/16"	2 13/16"	2 1/4"	Yellow	Aluminum	Nickel	3/4	NPT	Female	5974N14	000000

Armored Thermocouple Cords with Connectors


Male × Female Flat-Pin Mini Connector	Male × Female Round-Pin Connector

With plug-in connectors on both ends, these cords extend the reach of your thermocouple. Made of thermocouple materials, they prevent signal loss.

Choose a cord that matches your thermocouple type. You should also make sure the equipment you're connecting it to is compatible with the same thermocouple type.

Stainless Steel Jacket—These cords are protected by a stainless steel armor that also resists corrosion and wear.

				Wire		Material
	Thermocouple Type	Temp. Range, ° F	Lg., ft.	AWG	Dia.	Insulation	Jacket	Max. Jacket Temp., ° F	Insulation Max. Temp., ° F		Each
Stranded Wire







				Flat-Pin Mini Male × Flat-Pin Mini Female Connector

				K	32 to 350	5	24	0.02"	PTFE	Stainless Steel	2,300	350	5787N14	000000


				K	32 to 350	10	24	0.02"	PTFE	Stainless Steel	2,300	350	5787N15	00000
				K	32 to 350	25	24	0.02"	PTFE	Stainless Steel	2,300	350	5787N16	000000




						Round-Pin Male × Round-Pin Female Connector

						K	32 to 350	5	24	0.02"	PTFE	Stainless Steel	2,300	350	5787N23	00000


						K	32 to 350	10	24	0.02"	PTFE	Stainless Steel	2,300	350	5787N24	00000
						K	32 to 350	25	24	0.02"	PTFE	Stainless Steel	2,300	350	5787N25	000000

Terminal Blocks for Thermocouples

Unlike other terminal blocks, these blocks connect to thermocouple wire without distorting or destroying the signal. The metal in each terminal matches the metal of a specific thermocouple wire type. The ends of the blocks are labeled positive or negative so you know which end of the wire to attach.

Also known as a barrier strip, this type of terminal block has dividers to separate live wires and keep your setup tidy. Mount the blocks directly onto control panels, enclosures, and equipment. The screw-clamp terminals flatten your wire so it stays put when vibrated or pulled.

												Mounting Holes
	No. of Circuits	No. of Terminals per Circuit	For Wire Ga.	Wire Connection	Terminal Size	Terminal Ctr.-to-Ctr.	Lg.	Wd.	Ht.	Max. Temp., ° F	Color	Dia.	No. of		Each
For Type K Thermocouples







				250V AC—20 amp per Circuit

				2	4	16 to 14	Screw-Clamp Terminal	No. 6	7/16"	2 1/2"	1 1/8"	1/2"	300	Black	0.17"	4	7882N12	000000


				4	4	16 to 14	Screw-Clamp Terminal	No. 6	7/16"	4 1/4"	1 1/8"	1/2"	300	Black	0.17"	4	7882N15	00000
				6	4	16 to 14	Screw-Clamp Terminal	No. 6	7/16"	6"	1 1/8"	1/2"	300	Black	0.17"	4	7882N18	00000
				8	4	16 to 14	Screw-Clamp Terminal	No. 6	7/16"	7 3/4"	1 1/8"	1/2"	300	Black	0.17"	4	7882N22	00000
				10	4	16 to 14	Screw-Clamp Terminal	No. 6	7/16"	9 1/2"	1 1/8"	1/2"	300	Black	0.17"	4	7882N25	00000

Modular DIN-Rail Mount Terminal Blocks

Mix and match these terminal blocks to get the exact number of circuits you need in a single setup. Add blocks for thermocouples, fuses, and grounding wire as needed. The blocks clip side by side onto DIN rail in control panels, creating tidy rows of circuits that you can identify and access on the spot.

The screw-clamp terminals flatten your wire so it stays put when vibrated or pulled. If you need to change wiring frequently without adjusting a screw, consider a quick-connect terminal block with spring-clamp or lever-clamp terminals.

Thermocouple Terminal Blocks with Screw-Clamp Terminals

Image of Product. Front orientation. Terminal Blocks. Modular DIN-Rail Mount Terminal Blocks, Thermocouple Terminal Blocks with Screw-Clamp Terminals.

Run your thermocouple wire into these blocks so no signal is lost or destroyed. The metal in the terminals is compatible with multiple thermocouple wire types.

Covers—Snap onto the exposed side of a terminal block to prevent accidental contact with a live wire.

End Stops—Mount at the end of a group of terminal blocks so they don't slide when vibrated or bumped.

Terminal Blocks												Covers		End Stops
										Each
No. of Circuits	No. of Terminals per Circuit	For Wire Ga.	Wd., mm	Ht., mm	For Thermocouple Type	Color	For DIN Rail Trade Size	Enclosure Rating		1-24	25-Up		Each		Each







			500V AC/500V DC

			1	2	18 to 16	6	44.5	J, K, T	Gray	1, 3	IP20	7641K381	000000	000000	7641K31	00000	7641K35	00000

Markers


Blank	Numbered for Horizontal Rails	Numbered for Vertical Rails

Label your terminal block connections so you can identify them at a glance.

							Each
	For No. of Circuits	For Terminal Block Wd., mm	Number Range	Markers per Card	Color		1-24	25-Up
Blank



		1, 2	6	—	100	White	7641K19	00000	00000


		Numbered for Horizontal Rails



				1, 2	6	1 to 100	100	White	7641K75	0000	0000


				1, 2	6	101 to 200	100	White	7641K76	0000	0000


				Numbered for Vertical Rails



						1, 2	6	1 to 100	100	White	7641K77	0000	0000


						1, 2	6	101 to 200	100	White	7641K78	0000	0000