Description
The Johnson Controls A19ADB-11 is a heavy-duty utility thermostat engineered for demanding industrial and commercial HVAC applications where precise high-temperature control and fail-safe operation are critical. With a wide operating range and robust construction, this thermostat delivers reliable performance in ovens, dryers, furnaces, and other high-temperature process equipment.
Key Features
- Wide temperature sensing range of 200°F to 550°F for high-temperature process and HVAC applications
- Compatible with 120, 208, and 240 Vac power supplies for flexible installation
- 6-foot capillary length allows remote bulb placement away from the control body
- Remote bulb dimensions of .290″ x 1.445″ for easy insertion into tight or confined sensing locations
- Open-on-rise (Open Hi) switching action provides a safety cutout response when temperature exceeds setpoint
- Manual reset operation ensures the system cannot restart automatically after a high-limit trip — a critical safety feature
- Knob setpoint adjustment allows straightforward, tool-free calibration in the field
Specifications
- SKU: A19ADB-11
- Brand: Johnson Controls
- Voltage: 120/208/240 Vac
- Temperature Range: 200°F – 550°F
- Capillary Length: 6 feet
- Remote Bulb Size: .290″ diameter x 1.445″ length
- Switch Action: Open Hi (opens on temperature rise)
- Reset Type: Manual Reset
- Setpoint Adjustment: Knob
Applications
- High-temperature limit control for commercial ovens and dryers
- Industrial furnace and process heating equipment
- HVAC unit heaters and duct heating systems
- OEM equipment requiring remote-bulb high-limit protection
The manual reset feature is especially important in safety-critical installations — once the thermostat trips on a high-temperature fault, the system will not restart until an operator manually resets the control, preventing unattended restarts that could pose equipment or safety risks. Trust the Johnson Controls A19ADB-11 for dependable high-limit protection in your most demanding applications.
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