Description
Siemens S55180-A158 24VAC 0-10VDC NSR Normally Open Actuator
The Siemens Building Technology S55180-A158 is a high-performance non-spring-return (NSR) actuator engineered for demanding building automation and HVAC control applications. Designed to accept a 24 VAC power supply and a 0–10 VDC modulating control signal, this actuator delivers smooth, precise positioning for dampers and valves in commercial and industrial HVAC systems. Its normally open (NO) configuration ensures a defined fail-safe position, making it a reliable choice for air handling units, VAV systems, and hydronic control loops.
Key Features
- Operating voltage: 24 VAC for broad compatibility with standard building automation power supplies
- Control signal: 0–10 VDC modulating input for accurate, stepless positioning
- Non-spring-return (NSR) design retains last position on power loss
- Normally open (NO) operation provides a defined default state for system safety
- Engineered by Siemens Building Technology for long-term reliability and precision
- Suitable for damper and valve actuation in commercial HVAC and building automation systems
- Compact, robust construction for straightforward installation and maintenance
Applications
- Air handling units (AHUs) and variable air volume (VAV) systems
- Hydronic heating and cooling control valves
- Building automation and energy management systems
- Commercial and industrial HVAC control loops
Product Specifications
- Brand: Siemens Building Technology
- SKU / Part Number: S55180-A158
- Supply Voltage: 24 VAC
- Control Signal: 0–10 VDC
- Actuator Type: Non-Spring-Return (NSR)
- Default Position: Normally Open (NO)
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