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The Johnson Controls A28MA-1C Penn Series A28 is a versatile two-stage temperature control device designed for a range of industrial applications. Featuring a weatherproof NEMA 3R enclosure and two single-pole, double-throw (SPDT) switches, it ensures reliable operation in various environments.
This temperature control unit from Johnson Controls is ideal for applications requiring precise temperature regulation. It can effectively manage sump water temperature for cooling towers and fan cycling control for air-cooled condensers.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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