Description
Johnson Controls A70KA-1 Temperature Controller Overview
The Johnson Controls A70KA-1 is a reliable capillary-type temperature controller engineered for demanding HVAC and refrigeration applications. With a sensing range of 100°F to 170°F, this control is ideally suited for high-temperature limit and process temperature management tasks where precise, dependable switching is essential.
Key Features
- Temperature sensing range: 100°F to 170°F
- Manual reset (M/R) operation — requires manual intervention after trip for added safety
- Open-on-rise (OPEN-HI) switch action — circuit opens as temperature rises to setpoint
- 6-foot capillary tube for flexible remote sensing placement
- Compact, rugged design suited for commercial and industrial HVAC systems
- Johnson Controls A-Series temperature controller platform
Application & Benefits
The A70KA-1 is commonly used as a high-limit safety control in heating systems, boilers, air handlers, and process equipment. The manual reset feature ensures that a technician must physically acknowledge and reset the control after a high-temperature trip event, preventing automatic restart and protecting equipment from repeated fault conditions. The open-on-rise switching action interrupts the circuit when the sensed temperature reaches the upper limit, providing a critical layer of protection.
The 6-foot capillary tube allows the sensing bulb to be positioned at the optimal measurement point, even when the controller body must be mounted remotely from the heat source. This flexibility simplifies installation across a wide variety of equipment configurations.
Product Specifications
- Brand: Johnson Controls
- SKU / Model: A70KA-1
- Temperature Range: 100°F – 170°F
- Reset Type: Manual Reset (M/R)
- Switch Action: Open on Temperature Rise (OPEN-HI)
- Capillary Length: 6 feet
- Series: A70 Temperature Controllers
Why Choose Jackson Systems?
Jackson Systems is your trusted HVAC distributor for Johnson Controls products. We offer competitive pricing, fast shipping, and knowledgeable support to help you get the right part the first time.
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