Siemens Building Technology GMA121.1U Actuator 319852-301 The "HH" core designation indicates

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ensuring a drop-in replacement without field modifications

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Siemens Building Technology GMA121.1U Actuator 319852-301 The "HH" core designation indicatesThe Siemens GMA121. 1U is a heavy duty spring return damper actuator engineered for high demand HVACR applications requiring reliable fail safe operation. Operating on 24VAC DC, this direct coupled actuator delivers a robust 62 lb in torque (7 Nm), making it an ideal choice for managing return air, mixed air, and exhaust dampers in both constant and variable air volume systems. Built with a rugged, die cast aluminum NEMA 1 housing, this unit ensures