Product Specifications

Snap-Action Capillary Controls

The 10H series temperature control from Therm-O-Disc was originally developed to sense hot spots along the length of electric baseboard heaters. It is also used in other applications where it is necessary to sense temperatures along a continuous length. The 10H capillary tube is vacuum charged with selected fluids to give specific calibrations. When the calibration temperature is reached, a change in fluid vapor pressure allows the diaphragm to snap through and operate the contacts. The snap-action design provides high-speed contact separation and excellent reliability. Typical applications for the 10H include electric baseboard heaters and gas furnaces.

Features and Benefits:

• The ability to sense temperature along a continuous length.

• Excellent sensitivity. Since the capillary tube is charged, the 10H responds to the hottest spot along the capillary tube.

• High-speed contact separation for long contact life.

• Design flexibility provided by a variety of switch actions, capillary tube lengths, mounting brackets and terminations.


Switch Actions:

• Automatic Reset (Type 10H11) – SPST contacts open on temperature rise and automatically reset on temperature fall.

•Manual reset (Type 10H14) – SPST contacts open on temperature rise and can be reset when the control has cooled to a lower temperature and the reset button has been depressed. The 10H manual reset is agency recognized as an “MI-trip free” construction, which means that if the reset button is held down, the control can cycle thermally.

Thermal Characteristics:

The 10H can be calibrated to open on temperature rise between 150°F (65.6°C) and 350°F (177°C), with a standard tolerance of ±15°F (±8.5°C). The 10H automatic reset will reclose the contacts at approximately 40°F (22°C) below its open temperature. Manual reset controls may automatically reset when exposed to temperatures below -31°F (-35°C). The 10H is available with the copper capillary tube in preferred lengths from 24” to 144” as measured from the bottom of the mounting flange.

Mounting Brackets:

The standard mounting bracket has two slots, each .170” (4.318mm) wide. An alternate “push on” mounting bracket is also available.

Terminations:

Standard leads are two 6 1/2” (165.1mm), #14 AWG, 105°C, 1/32” (10.8mm) thick black PVC insulation, stripped 1/2” (12.7mm). Also available (automatic reset only) are 1/4”(6.30mm), 90° angle, .032” (0.8mm) blade terminals. A snap-on terminal cover is available for controls supplied with lead wires.