York S1-024-35275-000 SPNO Close On Fall Switch WC 0.35"

The York S1-024-35275-000 SPNO Close On Fall Switch is designed for use in HVAC systems only. This switch serves as safety device which is operated by pressure variation within the system. It is of Single Pole, Normally Open type and has been set to operate and close when the pressure drops below a set pressure. It is normally used in conjunction with the pressure system to ensure that the HVAC system runs within pressure limits. If the pressure goes too low, the switch triggers system shut offs or notifications to prevent further damage or inefficiencies.