Description
The Siemens SFA71U/25G is a 24V, 2-position, spring return, normally closed zone actuator engineered for precise and dependable HVAC zone control applications. Designed for use in commercial and residential building automation systems, this actuator ensures fail-safe operation through its spring return mechanism — automatically returning to the normally closed position upon loss of power, protecting the system and maintaining zone integrity.
Key Features
- 24V operating voltage for compatibility with standard HVAC control systems
- 2-position (on/off) control for straightforward zone management
- Spring return (SR) mechanism provides fail-safe, normally closed (NC) operation
- Normally closed design ensures zone defaults to closed position on power loss
- Compact, robust construction suited for demanding HVAC environments
- Designed for use with compatible Siemens zone valves and building automation systems
- Easy installation and wiring for fast commissioning
Applications
- Hydronic zone control in residential and light commercial systems
- Fan coil unit control
- Building automation and energy management systems
- Two-pipe and four-pipe HVAC zoning applications
Product Specifications
- Brand: Siemens Building Technology
- Model / SKU: SFA71U/25G
- Supply Voltage: 24V
- Control Type: 2-Position (On/Off)
- Return Type: Spring Return (SR)
- Default Position: Normally Closed (NC)
Trust Siemens Building Technology for proven zone actuator performance. The SFA71U/25G is a reliable choice for contractors and engineers seeking quality, fail-safe HVAC zone control components.
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