Description
Siemens 134-1450 is a proven DPST (Double Pole, Single Throw) electric pressure switch for monitoring and controlling pressure in HVAC systems and pumps. This switch, whose pressure range is between 3 and 30 PSI, has a non-metallic diaphragm that changes contact within its electrical contacts with pressurised changes in pressure. When system pressure is at or above the setpoint, the switch closes its normally open contacts and performs the intended actions (turning on a pump, for example, or a control system). This is a reliable part and necessary to maintain system efficiency and protect against pressure fluctuation related equipment damage.
