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(1) - - CECOMINOD078043 A19ABA-40C Line V Mechanical Thermostat, 120 to 277 VAC

Q: Where is the best placement for the thermostat in a walk in freezer?

In the return air slightly below the bottom of the coil. I did Super Market refrigeration 30 years before moving to Building Automation.

Q: Is this single pole double throw? (spdt)?

It's been a while since I installed it but I'm pretty sure it's SPST. Used on walk in cooler.

Q: does this unit have Compressor Delay Protection?

Ki-Jin Yoon, Thank you for your question. The Johnson Controls A421 is an electronic temperature control that includes an “Anti-Short Cycle Time Delay”. The below link is to the A421 page with some literature embedded on the page. Please let us know if you have any further questions. https://www.amazon.com/Johnson-Controls-Electronic-Temp-Control/dp/B07GB543Y7 -Johnson Controls

Product ID: 386482775

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Details

Brand
Johnson
Model name
A19ABA-40C
Controller type
Push Button
Temperature Control Type
Manual
Connectivity technology
Wi-Fi

📏Compact 8.13x6.6x26.42 cm

⚙️Fixed/adjustable differential

🌡️Wide temp range 120-277VAC

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Description

🌡️ Stay cool, stay smart — control your climate like a pro!

SPACE SAVING DESIGN - Compact enclosure fits effortlessly into any mechanical system.
ECO FRIENDLY SENSING - Liquid-filled sensing elements ensure reliable, environmentally conscious performance.
CUSTOMIZABLE SENSITIVITY - Choose fixed or adjustable differential to tailor your climate control.
PRECISION TEMPERATURE CONTROL - Maintain exact comfort with constant differential across the entire range.
VERSATILE VOLTAGE COMPATIBILITY - Operates seamlessly from 120 to 277 VAC for diverse HVAC setups.

The Johnson Controls A19ABA-40C Line V Mechanical Thermostat offers precise single-stage temperature control with a wide voltage range (120-277 VAC) and a compact design. Featuring environmentally friendly liquid-filled sensing elements and options for fixed or adjustable differentials, it delivers reliable, customizable HVAC performance for professional-grade climate management.

Specifications

Brand	Johnson Controls
Model Number	CECOMINOD078043
Product Dimensions	8.13 x 6.6 x 26.42 cm; 453.59 g
Voltage	277 Volts
Item Weight	454 g

Have a Question? See What Others Asked

Where is the best placement for the thermostat in a walk in freezer?

Is this single pole double throw? (spdt)?

Would like to use this to run a heater in my greenhouse does this thermostat close on a temperature fall?

does this unit have Compressor Delay Protection?

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