Siemens 134-1451 1-Stage N/C Electric Pressure Switch W/Dual Setpoint Residential SW134

The Siemens 134-1451 is a residential one stage electric pressure switch for building automation systems. This device has a dual setpoint and usually closed (N/C) contact type and is used for accurate pressure control in the 1.5 to 10 PSI range. It’s a part of a series of tried and true pressure switches, the SW134 series, which are known for reliability and efficiency. The most common use for this pressure switch is to monitor and control system pressure in HVAC systems. It turns on and off predetermine pressure thresholded electrical circuits. The function of such regulating mechanism is to prevent the occurrence of low water flow or high pressure buildups, and to guarantee the optimal functioning of the system.