United Electric J120K-455 Differential Pressure Switch

The United Electric J120K-455 is a robust differential pressure switch from UE's 120 Series, designed for reliable monitoring and control in hazardous industrial environments. This model features an adjustable set point range of 5 to 80 inches water column differential (12.4 to 199.1 mbar), making it ideal for applications requiring precise detection of pressure differences, such as filter monitoring, flow detection, and level sensing in oil and gas, chemical processing, and power generation industries. Key features include an explosion-proof aluminum enclosure rated for Class I, Div. 1 hazardous locations, Buna-N diaphragm for compatibility with various media, and a single SPDT snap-action switch for electrical signaling. Advantages over similar products include high overrange protection up to 225 psi, adjustable deadband to minimize cycling, and UL/CSA certifications for safety. Benefits encompass durable construction for harsh conditions, easy field adjustability, and low maintenance, though drawbacks may include higher cost compared to non-explosion-proof alternatives and the need for periodic calibration in corrosive environments. This unit appears used but in good condition based on visual inspection, with no visible damage or excessive wear, and includes factory labeling for traceability.