Description
The Johnson Controls P100DA-81 is a heavy-duty encapsulated pressure control engineered for reliable high-side pressure protection in commercial and industrial refrigeration and HVAC systems. Its direct-mount design simplifies installation by attaching directly to the system without the need for remote sensing lines, reducing potential leak points and installation time.
Key Features
- Encapsulated construction protects internal components from moisture, dust, and harsh operating environments
- Direct-mount design for fast, straightforward field installation
- SPST (Single-Pole, Single-Throw) switching action for simple circuit control
- Open on pressure rise action — contacts open when system pressure reaches the setpoint, providing high-pressure cutout protection
- Manual lockout reset on close — requires deliberate manual intervention to reset after a high-pressure trip, preventing automatic restart and protecting equipment
- Open construction allows for easy inspection and field serviceability
Electrical Specifications
- Contact voltage rating: 120/240 Vac
- Switch type: SPST
Pressure Specifications
- Opens at: 630 PSIG (high-pressure cutout setpoint)
- Action: Open on pressure rise
Applications
- High-pressure cutout protection for refrigeration compressors
- Commercial HVAC condensing units
- Industrial refrigeration systems requiring manual reset safety lockout
- Any application demanding reliable pressure-activated circuit interruption at 630 PSIG
The manual lockout reset feature is a critical safety attribute — once the control trips on high pressure, the system cannot automatically restart until a technician physically resets the control. This ensures the root cause of the pressure event is investigated and resolved before the system is returned to service, protecting compressors and downstream components from repeat damage.
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