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Chrome-bevel sheet on grid paper — specs and return notes filed under the bay.
The standard RSD is a 24-volt unit
The forged brass construction and nickel-plated stem provide the durability needed for closed-loop systems
Using the 057076501 prevents issues related to incorrect CFM or mounting misalignment
and cable ties to streamline the HVAC pressure switch installation
Energy Efficiency: Prevents unnecessary defrosting
Carrier HK02ZB054 Pressure Switch 320788-704 The standard RSD is aFor mid to large scale commercial and residential HVAC units, the Carrier HK02ZB054 Pressure Switch is a critical safety component designed to maintain peak system performance. This 78 54 PSI low pressure switch effectively prevents compressor damage by interrupting the control circuit if refrigerant levels drop below safe operating thresholds. Operating on a 24V signal, this OEM Carrier replacement part is calibrated to open at 78 PSI and close at 54