Description
The United Electric J21K-S150B 0/40 Spdt Nema1 Pressure Sw is a pressure switch commonly used in HVAC equipment. It works by keeping an eye on system pressure and using predetermined pressure thresholds to determine when to turn a on or off signal. Boilers, refrigeration systems, and air compressors are just a few examples of the HVAC equipment that commonly use this switch.The switch measures the pressure in the system using an internal diaphragm. This is how it operates. When the pressure reaches a preset point, the relief valve actuates, flipping the electrical connections inside. Then, you may utilize these contacts to control a variety of devices, including turning a compressor or pump on or off.There are various advantages for HVAC systems when using this pressure switch.
