Siemens Building Technology S55180-A158 Actuator 318423-701 a Class 2 transformer sized

a Class 2 transformer sized for at least 6 VA is necessary to power the unit safely

check the on-board LED diagnostics for a flash code

Actuators must be selected and purchased separately based on the required control signal and fail-safe requirements of your specific project

ensuring secure connections without specialized fittings

Electrical specs (MFD and Voltage) are the priority

Siemens Building Technology S55180-A158 Actuator 318423-701 a Class 2 transformer sizedThe Siemens Building Technology S55180 A158 (Model SSF161. 05U) is a high precision proportional electronic actuator designed for seamless integration with 599 Series zone valves. Engineered for performance in VAV systems, fan coil units, and chilled ceiling applications, this 24Vac dc actuator utilizes a 0 10 Vdc positioning signal to provide linear control with a 1 10 inch (2. 5 mm) stroke. As a non spring return (NSR), fail in place unit, it