A28 Two Stage Temperature Control


A28AA-4C30/110F; DIFF 3.5 FIXED; 2-SPDT; COILED BULB$250.19
A28AA-9C20/80F;3.5 Fixed Diff ;6 ft. CAP; 2-SPDT;3/8 X 5"$164.83
A28AA-28CDIFF 3.5 FIXED; 6 ft. CAP; 2-SPDT; 12 ft. AVG BULB$295.26
A28AA-29C8 ft. CAP; 2-SPDT;3/8 X 4 in. BULB$258.69
A28AA-36C40/90F; 6 ft. CAP; 2-SPDT;3/8 X 5-3/4 in. BULB$258.69
A28AA-37C60-140F; 5 Fixed Diff ;6 ft.CAP; 2-SPDT; 3/8 X 4"$254.10
A28AJ-4C20/80F; 6 ft. CAP; 2-SPDT 3/16 X 22 in. BULB$291.35
A28AB-1C20/80F; 6 ft. CAP; 2-SPDT;3/8 X 5 in. BULB$217.54


These are two stage temperature controls that incorporate a liquid filled sensing element. Use for temperature sensing applications requiring two-stage control of HVAC/Refrigerationequipment.

Click below to view the product specification sheet and additional product information.

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Additional information


Johnson Controls


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