Description
Johnson Controls P20DB-1 Air Conditioning Pressure Control Overview
The Johnson Controls P20DB-1 is a high-pressure safety control engineered for air conditioning and refrigeration systems. Featuring an open-on-rise (Open Hi) switching action, this control cuts out on high-pressure conditions to protect compressors and system components from damaging over-pressure events. The manual reset design ensures that a technician must deliberately reset the control before the system restarts, providing an added layer of safety and preventing repeated automatic cycling into a fault condition.
Key Features
- Pressure range: 100 PSI to 425 PSI
- Open-on-high-pressure (Open Hi) switching action for high-pressure cutout protection
- Manual reset operation — requires deliberate technician reset after trip
- Designed for air conditioning and refrigeration system applications
- Helps protect compressors from damage caused by high-pressure conditions
- Durable construction suitable for demanding HVAC/R environments
Application
The P20DB-1 is ideal for use as a high-pressure safety cutout in commercial and residential air conditioning systems. When system pressure rises above the set point, the control opens the circuit, shutting down the compressor and preventing equipment damage. The manual reset feature ensures the root cause of the high-pressure condition is diagnosed and corrected before the system is returned to service.
Product Specifications
- Brand: Johnson Controls
- SKU: P20DB-1
- Pressure Range: 100 PSI to 425 PSI
- Reset Type: Manual Reset
- Switch Action: Open on High Pressure (Open Hi)
- Application: Air Conditioning / Refrigeration Pressure Control
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