Siemens Building Technology S55155-A110 Actuator 328140-751 Its durable metal housing and

Its durable metal housing and high-heat tolerance make it a dependable staple for maintenance professionals requiring a genuine Lennox replacement part

If the limit switch is open

Reliability: Engineered by ICM Controls to withstand the electrical demands of year-round heat pump operation

it is compatible with various configurations

System Longevity: Reduces thermal shock to the plenum by ensuring consistent airflow is established before heat generation

Siemens Building Technology S55155-A110 Actuator 328140-751 Its durable metal housing andThe Siemens Building Technology S55155 A110 Actuator is a professional grade non spring return electronic valve actuator designed for precise modulating control in HVAC systems. Engineered for high performance terminal unit applications, this 24Vac dc actuator is the direct engineering replacement for the legacy Siemens SSC61U and the European SSC619 models. It seamlessly integrates with Powermite 599 Series MT valves, providing a reliable 65 lbf (300