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Penn A28AA-4C

Two Stage Temp Control

SKU : A28AA-4C
Penn A28AA-4C - Two Stage Temp ControlPenn A28AA-4C - Two Stage Temp Control
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About this Item

TWO STAGE Temperature Control, 30/110F, Differential 3.5 Fixed, 2-SPDT, NEMA 1, 1HP, Coiled Bulb
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Product Highlights

Penn A28AA-4C - Two Stage Temp Control

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 SPDT switches 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.

Manuals & Docs

Penn A28AA-4C - Two Stage Temp Control
Weight 1 Pound (lb.)
Height 6.2 Inches (In)
Width 2.6 Inches (In)
UPC 078502808884
Length 2.7 Inches (In)
Brand Penn
Voltage 240 VAC
Phase Single
Cycle/Hertz 50
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