United Electric J21K-140 SPDT Differential Pressure Switch 0–6 PSID NEMA 4

The United Electric J21K-140 SPDT 0-6 NEMA 4 Differential Pressure Switch is an essential component in HVAC systems, allowing for precise control of pressure differentials. The United Electric J21K-140 SPDT 0-6 NEMA 4 Differential Pressure Switch is intended to operate in a pressure range of 0 to 6 pounds per square inch (PSI), ensuring dependable performance even in demanding environments. The United Electric J21K-140 SPDT 0-6 NEMA 4 Differential Pressure Switch SPDT (Single-Pole, Double-Throw) configuration enables flexible application by activating the switch based on specific pressure differentials. It is widely used in HVAC equipment such as air handling units, ducts, and ventilation systems to maintain optimal airflow and pressure levels. NEMA 4 rating indicates durability and resilience to harsh conditions.