Features: S1-02529041005 replaceable part number: 025-29041-005 L140 furnaces fan limit switches, suitable for mainstream models such as P4HUB12N08001A, P4HUA12N06401A, YCJF24S41S1. 140°F disconnect, 110°F close, HVAC temperature control limit switches is a safety device used to turn off equipment. It can prevent temperature or pressure from exceeding the value of the switches. When the furnaces temperature exceeds the preset safety threshold (140°F), switches will automatically cut off the heating circuit. Designed to protect your furnaces from overheating, it can effectively prevent damage to the machine systems and ensuring the safe operate of the furnaces and fan. This limit switches is supported by high temperature resistant plastic, with long term durability and excellent performances, and can withstand high temperature working environments for a long time. By replacing a new limit switches, you can avoid circuit failures and heating interruptions caused by a faulty limit switches. Keep warm in the colder season. Specifications: Component: Plastic Size: As Shown in the Picture Package Includes: 1pc furnaces Limit switches note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.