Description
The Johnson Controls A19AAB-40 is a rugged, line-voltage utility thermostat engineered for reliable temperature control across a wide range of commercial and industrial HVAC applications. With a broad 100–240°F operating range and a single-pole, single-throw (SPST) switching action that opens on temperature rise, this thermostat is ideally suited for high-temperature limit control, duct sensing, and equipment protection duties.
Key Features
- Wide temperature sensing range of 100°F to 240°F for versatile application coverage
- SPST switching action — opens on rise for reliable high-limit or safety cutout control
- Compatible with 120, 208, and 240 Vac line-voltage systems
- 12″ capillary tube provides flexible sensor placement away from the control body
- Durable utility-grade construction suited for demanding commercial and industrial environments
- Simple, direct-wired installation with no low-voltage transformer required
Specifications
- Brand: Johnson Controls
- SKU / Model: A19AAB-40
- Voltage: 120/208/240 Vac
- Temperature Range: 100°F – 240°F
- Capillary Length: 12″
- Switch Type: SPST (Single-Pole, Single-Throw)
- Action: Open on Rise
Common Applications
- High-temperature limit control on heating equipment
- Duct and plenum temperature sensing
- Commercial refrigeration and process equipment protection
- Fan and blower staging in line-voltage systems
- Industrial heating and ventilation control panels
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