Carrier HH12ZB150 Limit Switch L150-40F

The Carrier HH12ZB150 is a high limit switch that is used in Carrier HVAC equipment which is mostly in furnaces or air handlers. An anti heat device which turns off furnace in case of its overheating. This switch is about 3 inches in length, 2 inches in width and 3.5 inches in height. It plays an essentialrole of a check and balance mechanism within your heating system. This is set by default for certain temperature values with high limit set at 150°F and low limit set at 40°F. If the temperature inside the furnace goes high beyond the high limit of 150°F, the switch blows off the power supply to the burner.