Kele Product TC-108-1A-3C 7.5" Fire Thermostat

Product Overview:
Detects excessive air temperature in HVAC ductwork and interrupts the electrical circuit when the temperature reaches the configured limit. The Kele TC-108-1A-3C Fire Thermostat, manufactured by Senasys, uses a helical bimetal sensing element and a manual-reset high-limit switch to respond to rapid temperature increases associated with fire conditions.

High-Temperature Sensing:
Uses a helical bimetal element that responds to rising duct temperatures. At the setpoint, the normally closed SPST contacts open, interrupting the connected electrical circuit.

Manual Reset:
Uses a mechanically latching switch that remains tripped after a high-temperature event. Once the temperature condition has cleared, the externally accessible reset button allows the control to resume operation.

Replacement Guidelines:
Replace the Kele TC-108-1A-3C Fire Thermostat when the existing thermostat is damaged or no longer performs its intended temperature-responsive control function. Use the Kele TC-108-1A-3C OEM replacement for compatible fire-control applications. Have a qualified technician inspect the connected control circuit and verify the replacement configuration before installation.

Common Failure Symptoms:

• The high-temperature switch fails to trip.
• Connected equipment continues operating during excessive duct temperatures.
• The switch cannot be reset after the temperature condition clears.
• Electrical contacts fail to open.
• The control trips at inconsistent temperatures.
• The sensing element shows signs of damage.

Equipment Compatibility:
Designed for HVAC duct requiring high-temperature limit protection, including building automation and specialized air-handling systems. The TC-108-1A-3C uses a 7.5-inch insertion element and a normally closed SPST output for interrupting a connected control circuit.

Technical Specifications:
Brand: Kele
Manufacturer: Senasys
Part Number: TC-108-1A-3C
Part Type: Fire Thermostat
Element Length: 7.5 Inches