Description
The Johnson Controls A19ABC-36 is a field-proven mechanical remote bulb temperature control engineered for reliable, precise temperature switching across a broad range of commercial and industrial HVAC applications. Its wide voltage compatibility and rugged construction make it a go-to solution for refrigeration, freezer, cooling, and heating system control.
Key Features
- Wide voltage range — operates on 24 to 277Vac for maximum application flexibility
- SPDT (Single-Pole, Double-Throw) switching action supports both normally open and normally closed circuit configurations
- Automatic reset — returns to normal operation once the sensed temperature recovers, eliminating manual intervention
- Broad setpoint range of -30°F to 100°F covers low-temperature refrigeration through comfort cooling applications
- Adjustable differential of 3°F to 12°F allows fine-tuning of switching deadband to match system requirements
- 20-foot capillary length provides installation flexibility, allowing the control to be mounted away from the sensing location
- 3/8″ x 4″ remote sensing bulb delivers accurate, responsive temperature measurement at the point of control
- Mechanical design ensures dependable operation without the need for electronic components or external power for sensing
Specifications
- SKU: A19ABC-36
- Brand: Johnson Controls
- Control Type: Mechanical Remote Bulb Temperature Control
- Voltage: 24 to 277Vac
- Switch Action: SPDT (Single-Pole, Double-Throw)
- Reset Type: Automatic
- Setpoint Range: -30°F to 100°F
- Adjustable Differential: 3°F to 12°F
- Capillary Length: 20 feet
- Sensing Bulb Size: 3/8″ diameter x 4″ length
Typical Applications
- Commercial refrigeration and walk-in cooler/freezer temperature control
- HVAC unit ventilators and air handling unit control
- Chilled water and cooling system switching
- Industrial process temperature control
- Fan cycling and low-temperature cutout applications
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