MARS 43327 Pressure Switch 321142-301 This pneumatic pressure indicator is

This pneumatic pressure indicator is engineered to withstand ambient temperatures from -20 to 150°F

and 250/A units

including ZR34K5E-PFV-800

The Emerson Alco 057342 Coil

MARS 43327 Pressure Switch 321142-301 This pneumatic pressure indicator isFor service calls involving high side protection, the MARS 43327 Pressure Switch is a reliable HVAC high pressure cut out designed to prevent compressor damage during critical over pressure events. This SPST normally closed switch features a factory set 350 PSI cut out and an automatic 250 PSI cut in, making it an essential component for maintaining system safety in R410A refrigeration and heavy duty air conditioning applications. Built with tamper