A19BAB-3C Johnson Controls Temperature Control

Overview

The Johnson Controls A19AAD-5C is a single-stage, line-voltage mechanical temperature control featuring a case-compensated remote bulb design. Specifically engineered for applications requiring fixed narrow differentials, such as bulk milk coolers, it provides reliable environmental regulation by opening a circuit on temperature drop.

Features

• Case-compensated design to minimize ambient temperature influences
• Premium hydraulic capillary bulb sensing element
• Fixed temperature differential for precise tracking
• Compact NEMA 1 enclosure protecting internal components
• Standalone operation requiring no external power source

Specifications

• Temperature Setpoint Range: 30 to 50°F (-1 to 10°C)
• Temperature Differential: Fixed at 2.5°F (1.4°C)
• Switch Action: SPST, Open Low (Close on Rise)
• Capillary Length: 6 feet
• Bulb Dimensions: 0.366 x 2.542 inches
• Electrical Ratings: 120/240 VAC; 10 A non-inductive load
• Enclosure Rating: NEMA 1

Applications

• Bulk milk coolers and agricultural temperature regulation
• Commercial HVAC/R environmental control systems
• General-purpose industrial heating and cooling management
• Line voltage mechanical thermostat installations requiring remote sensing