New Johnson Controls A28AA-4C 2-Stage Space Thermostat, 30-110 Deg F,SPDT Switch For Sale
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New Johnson Controls A28AA-4C 2-Stage Space Thermostat, 30-110 Deg F,SPDT Switch:
New in BoxJohnson ControlsP/N: A28AA-4CTWO STAGE Temperature Control, 30/110F, Differential 3.5 Fixed, 2-SPDT, NEMA 1, 1HP, Coiled Bulb
All Info BelowA28 Series Two-Stage Temperature Controls Less Enclosure
These two-stage open type temperature controls are designed for mounting in cases or enclosures that are a part of the equipment on which they are installed. Controls are designed to cover a broad range of general purpose operating temperature control applications in the refrigeration, air conditioning and heating fields. Two SPDTswitches permit independent control circuits. Each switch maybe wired for “open high” or “close high” action as required, providing automatic changeover on heating cooling or similar requirements.
Available with close differential on each switch. A jumper across the “common” terminals is supplied as standard. Models are available for fixed or adjustable between stage differential.
All Series A28 temperature controls are designed for use only as operating controls. Where an operating control failure would result in personal injury and/or loss of property, it is the responsibility of the installer to add devices (safety, limit controls) or systems (alarm, supervisory systems) that protect against, or warn of, control failure.
- Dependability - precision snap-acting contacts in a dust protected enclosure.
- Flexibility -- wide choice of ranges, mounting and element styles.
- Precision repeat accuracy which is unaffected by barometric pressure and cross ambient problems.
- Special close differential models with case compensation of ambient temperatures available for critical requirements.
Weight1 Pounds (Lb)
Width2.6 Inches (In)
Height6.2 Inches (In)
Country of OriginMEX
Length2.7 Inches (In)
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