Johnson Controls A19BAC-3 Utility Thermostat

Upgrade your climate regulation systems with the Johnson Controls A19BAC-3 Utility Thermostat, a professional-grade solution engineered for high-accuracy space temperature monitoring. This single-stage, SPDT temperature control is specifically designed for agricultural, industrial, and commercial environments, such as poultry houses, milk houses, and large-scale ventilation projects. Operating across 120/208/240 Vac, the unit features a high-sensitivity stainless steel coiled sensing element that provides rapid response to ambient changes without the interference of barometric pressure. With a precise 0 to 43 degrees Celsius temperature range (30 to 110?F), it offers reliable performance for both heating and cooling applications.

The A19BAC-3 is built for longevity in demanding conditions, utilizing a liquid-filled sensing element and a dust-tight enclosure to maintain mechanical integrity. Contractors will appreciate the convertible setpoint adjustment, allowing for easy field transitions between screwdriver slot and knob adjustments. This model includes an automatic reset and a built-in high-cutout stop to ensure the system operates within defined safety parameters. Whether you are replacing a Honeywell T631A or installing a new HVAC line voltage thermostat, the A19BAC-3 delivers the technical consistency required for professional asset protection.

• Universal Voltage Compatibility: Supports 120V, 208V, and 240V AC electrical configurations for versatile field deployment.
• Corrosion-Resistant Sensing: The stainless steel coiled bulb stands up to harsh agricultural environments and high-humidity settings.
• Flexible Control Logic: Single-pole double-throw (SPDT) switching allows for seamless integration into either heating or ventilating circuits.
• Field-Adjustable Setpoints: Includes a visible scale and an adjustable high-cutout stop to prevent unauthorized or accidental temperature overrides.
• Precise Calibration: The helical-style element is factory-calibrated to ensure accurate switching at the 0-43?C range.

Can the A19BAC-3 be used for both heating and cooling equipment?
Yes. Because this is an SPDT thermostat, it features three terminals (R, B, and Y) that allow you to wire it to open or close the circuit on a temperature rise, making it suitable for fans or heaters.

What is the benefit of the coiled sensing element over a standard remote bulb?
The coiled air bulb significantly increases the surface area exposed to the air, providing a much faster response time and better sensitivity for space-sensing applications compared to a traditional straight bulb.

Is this thermostat suitable for livestock barn ventilation?
This model is a standard for farm and utility thermostats; however, it should reside in a NEMA 1 enclosure. Ensure mounting is on a flat surface to avoid twisting the case, which can impact the calibration of the liquid-filled element.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.