Industrial 4NN-K2-N4-B1A Pressure Switch 2-8 PSI

The SOR 4NN-K2-N4-B1A pressure switch is an industrial‑grade, adjustable sensing device with a 2–8 psi operating range that closes or opens a switch output as pressure crosses the setpoint in a gas or liquid line. Built with a 1/4" NPT(F) pressure port and a durable aluminum B1A housing, it is designed for reliable service in harsh industrial environments. The unit is actuated by changes in pressure of any gas or liquid (or vacuum acting on the sensing element), providing a switching signal for control circuits in process, pneumatic, and hydraulic systems. Typical uses include monitoring and maintaining threshold pressures in industrial processes, ensuring proper sequencing and safety interlocks within equipment and plant automation.