The 76JA3-5K is a thermocouple subassembly from Honeywell. It is composed of a Teflon®-insulated thermocouple wire and 1/8 in. steel sheath tubing. It has a junction box at one end, which contains a ceramic junction block and a float switch guard. It is used as a temperature monitoring device in applications like HVAC and refrigeration. The 76JA3-5K is accurate over a temperature range of -30 to +400 degrees Fahrenheit (-34 to 205 Celsius). It is UL, CSA, and CE listed and rated for use in Class I, Division 2, Groups A, B, C, and D hazardous locations.