Description
The Johnson Controls A19ABA-40 is a mechanical remote bulb temperature controller engineered for reliable, precise temperature sensing and switching across a wide range of HVAC and refrigeration applications. Featuring a broad voltage compatibility and a rugged sensing assembly, this controller delivers dependable performance in demanding commercial and industrial environments.
Key Features
- Mechanical temperature controller with remote sensing bulb
- Wide voltage range: 24 to 277Vac for versatile system integration
- SPST (Single-Pole, Single-Throw) switching action — Open on temperature rise (Open Low)
- Automatic reset operation for hands-free recovery after setpoint is reached
- Setpoint range: -30°F to 100°F for low-temperature through moderate-temperature applications
- Adjustable differential: 3°F to 12°F for fine-tuned control and system stability
- 6-foot capillary length for flexible remote bulb placement
- Sensing bulb: 3/8″ diameter x 4″ length for accurate immersion or strap-on sensing
Product Specifications
- SKU: A19ABA-40
- Brand: Johnson Controls
- Control Type: Mechanical, Remote Bulb
- Voltage: 24 to 277Vac
- Switch Action: SPST, Open Low (opens on temperature drop)
- Reset Type: Automatic
- Setpoint Range: -30°F to 100°F
- Adjustable Differential: 3°F to 12°F
- Capillary Length: 6 feet
- Sensing Bulb: 3/8″ x 4″
Applications
- Refrigeration unit temperature control
- Freezer and cooler monitoring and switching
- HVAC unit protection and safety cutout
- Fan cycling and compressor control
- Industrial process temperature switching
The A19ABA-40 is ideal for contractors and facility managers who need a proven, field-adjustable mechanical controller with remote sensing capability. Its wide voltage range, long capillary, and adjustable differential make it a versatile choice for new installations and retrofit projects alike.
Reviews
There are no reviews yet.