Carrier HK02ZA452 Pressure Switch 321702-401 This 10 1/2" x 8"

This 10 1/2" x 8" blower wheel features a 1/2" bore hub and is balanced to minimize vibration

this PSC motor ensures optimal airflow pressures and thermal stability

angular offset

It is not rated to handle backpressure conditions

This provides technicians with a reliable method for HVAC damper troubleshooting without needing to cycle the thermostat or use a multimeter at the motor head

Carrier HK02ZA452 Pressure Switch 321702-401 This 10 1/2" x 8"The Carrier HK02ZA452 Pressure Switch is a critical safety component designed for precise refrigerant pressure monitoring within commercial and residential HVAC systems. Engineered as a high limit safety cut out, this OEM Carrier replacement part is essential for protecting the compressor and refrigeration circuit from excessive pressure conditions. With a fixed cut out setting of 426 PSI and a cut in reset at 320 PSI, it ensures the system operates