Description
Carrier HK02ZA404 High Pressure Switch Overview
The Carrier HK02ZA404 is a high pressure switch engineered to protect refrigeration and air conditioning systems from damaging over-pressure conditions. Designed as a genuine OEM Carrier replacement part, this switch provides reliable, automatic circuit protection by monitoring system refrigerant pressure and interrupting operation when unsafe levels are detected.
Pressure Specifications
- Cut-Out (Trip) Pressure: 650 PSI
- Cut-In (Reset) Pressure: 420 PSI
Key Features & Benefits
- Genuine OEM Carrier replacement part for assured fit and performance
- Protects compressors and refrigerant circuits from high-pressure damage
- Automatic reset design restores system operation once pressure drops to safe levels
- Durable construction built to withstand demanding HVAC and refrigeration environments
- Direct drop-in replacement for compatible Carrier equipment — no modifications required
Application
The HK02ZA404 is intended for use in Carrier residential and light commercial air conditioning and heat pump systems where high-side refrigerant pressure monitoring is required. Always consult your equipment’s service manual to confirm compatibility before installation.
Installation Notes
- Install on the high-pressure side of the refrigerant circuit
- Ensure system is properly recovered and depressurized before servicing
- Follow all applicable local codes and manufacturer guidelines during installation
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