Description
The Johnson Controls A19AAD-5 is a heavy-duty mechanical temperature control engineered for bulk milk cooler applications. Featuring a wide voltage compatibility range of 24 to 277Vac, this SPST switching device delivers reliable open-on-temperature-drop (Open Low) operation with automatic reset — ideal for refrigeration and cold storage environments where consistent temperature management is critical.
Key Features
- Mechanical temperature control designed specifically for bulk milk cooler applications
- Wide voltage compatibility: 24 to 277Vac
- SPST (Single-Pole, Single-Throw) switching action — Open Low (opens on temperature drop)
- Automatic reset for hands-free operation after setpoint recovery
- Setpoint range: 30°F to 50°F, covering critical dairy refrigeration temperatures
- Fixed differential: 2.5°F (Close), ensuring tight and consistent temperature control
- 6-foot capillary length for flexible remote sensing installation
- 3/8″ x 2-5/8″ sensing bulb for accurate temperature measurement at the point of control
- Remote bulb design allows the control to be mounted away from the sensing location
Application
The A19AAD-5 is purpose-built for bulk milk cooler temperature control, where maintaining precise low-temperature ranges is essential for food safety and regulatory compliance. Its remote bulb and extended capillary allow the sensing element to be positioned directly in the cooled space or product, while the control body is mounted in a convenient, accessible location.
Specifications
- SKU / Model: A19AAD-5
- Brand: Johnson Controls
- Control Type: Mechanical Temperature Control
- Voltage: 24 to 277Vac
- Switch Type: SPST
- Action: Open Low (opens on temperature decrease)
- Reset Type: Automatic
- Setpoint Range: 30°F to 50°F
- Fixed Differential: 2.5°F (Close)
- Capillary Length: 6 feet
- Sensing Bulb Size: 3/8″ x 2-5/8″
- Sensing Configuration: Remote Bulb
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