Johnson Controls A19AGC-42 Utility Thermostat

The Johnson Controls A19AGC-42 is a heavy-duty utility thermostat engineered for high-precision temperature regulation in commercial HVACR applications. This line voltage thermostat features a liquid-filled sensing element and a 3/8" x 5" remote bulb, ensuring rapid response times and consistent accuracy regardless of barometric pressure or ambient temperature fluctuations. Designed for versatility, the A19AGC-42 operates on 120/208/240 VAC circuits with a Single-Pole Single-Throw (SPST) switch action that opens on temperature rise. With a 20?F to 90?F range and a 6-foot capillary, this control is ideal for space heating or cooling tower applications where reliability is paramount. This model is technically identical to the A19AGC-42C, featuring an automatic reset and a stem for knob adjustment. The unit is supplied as an open-frame component without an enclosure, making it a drop-in replacement for existing control panels and industrial equipment. Focus on performance and high-cycle durability defines this veteran-tier mechanical temperature control.

• Universal Voltage Compatibility: Supports 120V, 208V, and 240V AC power inputs for broad field flexibility.
• Remote Bulb Precision: The 3/8" x 5" copper bulb with a 6' capillary allows for accurate remote sensing in ducts or tanks.
• Snap-Acting Contacts: Dust-protected SPST contacts prevent arcing and ensure a clean break during temperature cycles.
• Automatic Reset Function: Eliminates the need for manual intervention once the system returns to the set point range.
• Identical Interchangeability: Fully compatible and functionally identical to the A19AGC-42C model.

Common Questions

Yes, the A19AGC-42 is designed for operating control in both heating and general-purpose applications. Since it is an SPST control that opens on temperature rise, it is typically used for heating; however, it can be integrated into cooling logic depending on your specific circuit requirements.

This specific model features a fixed differential of approximately 3.5?F, providing a stable operating window without the risk of unauthorized field tampering or adjustment drift.

No, this model is an "open enclosure" type (No Enclosure) intended for mounting inside an existing control panel or equipment housing. It includes a stem for a knob but does not include the external case.

This item is not eligible for free shipping.

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.