Temperature Instrumentation for Research and Industry


Connector & Stripanels - Mini 2-Pole Plugs & Jacks


Miniature plugs and jacks provide dependable, quick connections and easy installation of fine thermocouple wire and metal-sheath thermocouples. Accepts wire from 0.001" diameter to 24 gauge.

Polarized pins make it virtually impossible to mismate. Large double wipe jack inserts assure tight grip and low signal loss. Due to exclusive isolated screw design, contact is all thermocouple alloy from wire entrance to wire exit. ANSI calibration symbol and polarity symbol are molded on connector face. Surface mounting and stacking made easy by molded-in clearance holes.

Mini-connectors are molded from glass filled, high strength, thermoset compounds that will not melt. Mini-connectors are color coded and can be used in ambient temperatures to 400°F (205°C) continuous and 500°F (260°C) intermittent. Hi-Temp Mini connectors are colored red and can be used to 800°F (425°C) continuous and 1000°F (540°C) intermittent.


Exclusive Jab-In® terminals require only 1/4" of insulation removed. Wire is sandwiched between contacts of thermocouple alloy without damage. Looped wire ends are eliminated. Simple two-piece construction. Removable cap with semi-captive screws exposes terminals without loose parts falling out. Elastomer bushing provides wire strain relief. Braze-on sheath adapters are brazed or soldered to sheath. Crimp-on adapters are crimped on sheath using crimp tool. Bushings and adapters are locked into connector by cap.

For corrosive applications, gold plated contacts are available. Caution - system errors can result from use of plated contacts if significant thermal gradient exist at connector.

Mini Connector Torque Specifications (To avoid spinning or cracking of the mini connector)
  Standard Mini Connector High Temp Mini Connector
Terminal Screws (#2-56 X 0.135") 30ozf*in (22cN*m) 50ozf*in (36cN*m)
Cap Screws (#2-56 X 0.25") 25ozf*in (18cN*m) 35ozf*in (26cN*m)


Mini Plugs and Jacks 400°F Continuous Ambient 800°F Continuous Ambient
Thermocouple Type T/C Type
ANSI Color Code IEC Color Code Plug
Code No.
Code No.
Color Hi-Temp Plug
Code No.
Hi-Temp Jack
Code No.
Iron Constantan J Black Black 1260-J 1210-J Red 1360-J 1310-J
Copper Constantan T Blue Brown 1260-T 1210-T Red 1360-T 1310-T
ChromelTM AlumelTM K Yellow Green 1260-K 1210-K Red 1360-K 1310-K
Nicrosil Nisil N Orange Pink 1260-N 1210-N Red 1360-N 1310-N
ChromelTM Constantan E Violet Violet 1260-E 1210-E Red 1360-E 1310-E
Platinum 10% Rhodium S Green Orange 1260-S 1210-S Red 1360-S 1310-S
Platinum 13% Rhodium R Green Orange 1260-R 1210-R Red 1360-R 1310-R
Uncompensated (CU) U White White 1260-U 1210-U Red 1360-U 1310-U
Tungsten 5% Re/
Tungsten 26% Re
C Brown - 1260-C 1210-C Red 1360-C 1310-C

For more information regarding Mini 2-Pole Plugs & Jacks
Consult your Marlin Catalog.