United Electric J402K-S157B-M210 Pressure Switch W/IND 1/2" NPT 10-100 PSI

The United Electric J402K-S157B-M210 Pressure Switch W/IND monitor and respond to system pressure within the equipment. It is used to open, close, or change an electrical control state when pressure reaches a set range between 10 and 100 PSI. This switch is typically installed at a pressure connection point using its 1/2-inch NPT fitting, where it can track pressure conditions in the connected line or vessel. It supports pressure-based control, equipment protection, and operating response in various applications and equipment associated with HVAC systems.