the SPDT (Single Pole Double Throw) switch design allows the O16-166 to be wired to open or close on pressure rise

and 70/80 series White Rodgers units

Designed for Heil

System Compatibility: Rated at 115V to integrate seamlessly with standard furnace control boards and wiring harnesses

this OEM replacement part prevents high-amperage inrush by sequencing resistive loads

Johnson Controls P72MA-1 Pressure Control 30067439-890 the SPDT (Single Pole DoubleThe Johnson Controls P72MA 1 is a robust DPST Dual Pressure Control designed for heavy duty commercial refrigeration and HVAC systems. This Two Pole pressure switch provides simultaneous control of high side and low side pressures, making it an essential component for protecting compressors against low suction or excessive discharge pressures. The low pressure side features an adjustable range of 20" Wc to 100 psi with a field settable differential of