SOR Controls 4NN-K2-N4-C2A-RR Pressure Switch

SOR Controls 4NN-K2-N4-C2A-RR Pressure Switch is a weatherproof, piston-actuated device in the 4NN family designed to monitor process pressure and trigger electrical contacts in industrial settings. Its sensing assembly is force-balanced with a piston, and the wetted parts are sealed by a flexible diaphragm and a static O-ring for reliable operation across temperature changes. The model provides a 1/4" NPT(F) pressure port for field installation. As part of the 4NN lineup, suffixes indicate enclosure style and service environment, with weatherproof variants designed for challenging environments. Ranges and deadbands are set by model variant and are adjustable to suit different process needs. Common applications include automation loops and monitoring in pneumatic and hydraulic systems, water-treatment processes, and other industrial applications where a pressure switch is used to sense and signal threshold pressure. Models in the 4NN line use suffixes like K2, K4, K5, and K45 to tailor enclosure, service environment, and electrical connection options, enabling use in a range of industrial settings.