Description
The Johnson Controls P70BA-1 is a single-pole, single-throw (SPST) low pressure control engineered for reliable refrigeration and HVAC system protection. Designed to open on a pressure drop, this control safeguards compressors and refrigeration circuits by interrupting the circuit when system pressure falls below the set point — a critical safety function in commercial refrigeration and air conditioning applications.
Equipped with a manual reset mechanism, the P70BA-1 requires a deliberate operator reset after a low-pressure trip, preventing automatic restart until the root cause of the pressure drop has been identified and corrected. This feature adds an important layer of system protection and helps prevent equipment damage from repeated low-pressure cycling.
The 36-inch capillary tube provides flexible installation options, allowing the sensing element to be positioned precisely at the desired pressure tap without straining connections or compromising sensing accuracy.
Key Features
- Pressure range: 20 to 100 PSI
- Single Pole, Single Throw (SPST) switching action
- Open on low pressure (Open Low) operation
- Manual reset — requires operator intervention after trip event
- 36-inch capillary tube for flexible installation
- Designed for refrigeration and HVAC low-side pressure monitoring
- Protects compressors from low-pressure conditions
Applications
- Commercial refrigeration systems
- Air conditioning equipment
- Chiller and condensing unit low-side protection
- Any system requiring manual-reset low-pressure safety cutout
Specifications
- Brand: Johnson Controls
- SKU / Model: P70BA-1
- Pressure Range: 20–100 PSI
- Switch Type: SPST (Single Pole, Single Throw)
- Action: Open on Low Pressure
- Reset Type: Manual Reset
- Capillary Length: 36 inches
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