PENN Controls Products Catalog

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A28 Series Two-Stage Temperature Control Description The A28 Series are two-stage temperature controls that incorporate a liquid-filled sensing element. Refer to the A28 Series Two-Stage Temperature Controls with NEMA 1 Enclosure Product Bulletin (LIT-125130) for important product application information. Figure 9: A28 Action Diagram Features • wide temperature ranges available • constant differential throughout the entire range • single-pole, double-throw (SPDT) snap-acting switches • unaffected by changes in barometric pressure • unaffected by cross ambient conditions • compact enclosure • variety of sensing element styles Applications Use for temperature sensing applications requiring two-stage control of HVAC/R equipment. Accessories • packing nut assembly available for direct immersion applications (Code No. FTG13A-600R) • remote bulb models include 5/8 in. mounting clip 44

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