Description
The United Electric J21K-12878 is a robust, field-proven pressure switch engineered for demanding HVAC, boiler, and industrial control applications. With a 1/4″ NPT process connection, a 0–90 PSI operating range, and a 250V electrical rating, this switch delivers dependable on/off pressure control to protect equipment and maintain safe system operation.
Key Features
- Process connection: 1/4″ NPT for straightforward installation into standard piping
- Pressure range: 0–90 PSI, suitable for a wide variety of HVAC and hydronic system applications
- Voltage rating: 250V for compatibility with common commercial and industrial control circuits
- Reliable switching action provides accurate, repeatable pressure control
- Durable construction designed to withstand the rigors of continuous HVAC system use
- Compact form factor allows installation in tight mechanical spaces
Typical Applications
- Boiler and hydronic heating systems
- Compressor and refrigeration system pressure monitoring
- Air handling and HVAC equipment protection
- Industrial process pressure control
Why Choose United Electric?
United Electric Controls is a trusted name in pressure and temperature switches, known for precision engineering and long service life. The J21K-12878 continues that tradition, offering HVAC professionals a reliable solution for pressure-based system protection and control.
Product Specifications
- Brand: United Electric
- Model / SKU: J21K-12878
- Connection: 1/4″ NPT
- Pressure Range: 0–90 PSI
- Voltage Rating: 250V
- Switch Type: Pressure Switch
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