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Reliable Electrics: Class F insulation on the 120V coil prevents premature burnout during continuous duty cycles
Standardized Stroke: Maintains the factory-specified 5/16" stroke for consistent flow control
while it includes a thermal barrier for steam
Depending on your tank depth and required set points
It is specifically engineered to interface with low-voltage control circuits
Siemens Building Technology S55155-A108 Actuator R-22 Reliable Electrics: Class F insulationThe Siemens S55155 A108 Actuator is the reliable professional grade choice for terminal unit applications where fail in place functionality is a system requirement. Also known as the Siemens SSC131. 09U, this electromotoric linear actuator serves as the direct SSC81U replacement, providing a seamless retrofit for legacy Siemite MT series valves. Operating on 24VAC, it utilizes a 3 position floating control signal to drive a 6. 1 mm stroke with a
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