Firestat, Plenum-mount Limit Control
Adjustable Temperature, Manual Reset
The adjustable temperature duct limit switch features a helix bi-metal element that senses rapid increases in temperature, such increases often caused by fire in a HVAC duct system. The duct limit switch operates a single pole, single throw (SPST) switch that opens when temperature rises. The adjustable temperature limit switch can be set by the operator to sense 100°F to 250°F.
The duct limit switch is supplied with a manual reset lever, which requires human intervention to reactivate the limit switch after the high temperature condition has cleared.
Different bi-metal element lengths are available per the application requirements – 5″, 7.5″, or 11″. Choose the preferred length from the drop down above. Other custom lengths are available, please contact us.
These duct high temperature limits are indispensable in specialized HVAC applications and Building Automation Systems.
Our adjustable temperature limit switch features:
- > Adjustable Temperature range 100F-250F
- > Manual Reset
- > Multiple Element Insertion Lengths
- > Open on Rise – SPST
- > Inductive Amps @120V: 4.9; @240V: 9.8