Firestat

Duct Fan and Limit Controls

Firestat Duct Fan/Limit Controls

These firestat duct fan and limit switches are installed in air ducts to shut down heating, air conditioning and ventilation equipment when air temperature exceeds a pre-set limit.

The Duct High Temperature Switches feature a helix bimetal element that senses rapid increases in duct temperature, such as those caused by fire. The high temperature limit then operates an SPST switch that opens with a rise in temperature. A manual reset button reactivates the temperature limit after the high-temperature condition has cleared. These duct high temperature limits are indispensable in specialized HVAC applications and Building Automation Systems.

Firestat Limit Controls Catalog RFQ firestat duct limit controls


Adjustable Temperature Duct Limit SwitchADJUSTABLE TEMPERATURE DUCT LIMIT SWITCH

Firestat models TC-100, TC-105, TC-108 are field adjustable with a temperature range of 100°-250°F… (read more)

Adjustable Temperature Duct Limit SwitchPurchase firestat adjustable temperature duct limit switch

 

Fixed Temperature Duct Limit SwitchFIXED TEMPERATURE DUCT LIMIT SWITCH

The Models TC-205 Duct High Temperature Limits are Fixed Temp with a 5″ insertion element… (read more)

Fixed Temperature Duct Limit SwitchPurchase firestat duct limit controls

 

Duct Fan Controls
DUCT FAN CONTROLS

Senasys is currently working on the R&D for other duct control possibilities. Such as close on temperature rise, duct fan control, and a DPDT switch, which will open and close two sets of contacts, operating as a duct fan and limit control.Duct Fan Control