Description
Johnson Controls A70BA-18 Temperature Control Overview
The Johnson Controls A70BA-18 is a rugged, single-pole temperature control engineered for demanding refrigeration and heating applications. Operating on 120–240 Vac, this control offers reliable open-low switching action with a broad 15°F to 55°F temperature sensing range, making it well-suited for commercial refrigeration systems, walk-in coolers, and low-temperature heating circuits. Its 20-foot capillary length provides flexible remote sensing capability, while the 1/2″ conduit opening simplifies wiring integration into standard electrical enclosures.
Key Features
- Voltage Rating: 120–240 Vac for versatile power compatibility
- Switch Configuration: Single Pole, Open Low — contacts open on temperature drop
- Temperature Range: 15°F to 55°F (-9°C to 13°C) for low-temperature refrigeration and heating control
- Capillary Length: 20 feet for extended remote sensing reach
- Conduit Opening: 1/2″ for standard electrical conduit connections
- Safety Lockout: Manual reset lockout prevents automatic restart after a fault condition
- Applications: Refrigeration systems, walk-in coolers, low-temperature heating circuits
Manual Reset Lockout
The A70BA-18 features a lockout with manual reset, an important safety function that holds the system off after a temperature limit trip. This prevents nuisance cycling and protects refrigeration equipment and heating systems from damage caused by repeated fault conditions — requiring deliberate operator intervention before the system can restart.
Designed for Refrigeration and Heating
Built to Johnson Controls’ exacting standards, the A70BA-18 delivers dependable performance in both refrigeration and heating environments. The open-low switching action is ideal for low-limit safety cutout applications, ensuring equipment shuts down when temperatures fall below the setpoint — protecting product, equipment, and personnel.
Specifications
- SKU / Part Number: A70BA-18
- Brand: Johnson Controls
- Voltage: 120–240 Vac
- Pole Configuration: Single Pole
- Action: Open Low
- Temperature Range: 15°F to 55°F
- Capillary Length: 20 feet
- Conduit Opening: 1/2″
- Reset Type: Manual Reset Lockout
- Application: Refrigeration and Heating
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