Description
The Siemens GJD221.1U is a 120V, 2-position spring return actuator engineered specifically for fire and smoke damper applications. Designed to meet the demanding requirements of life-safety HVAC systems, this actuator provides dependable, fail-safe damper positioning to help contain the spread of fire and smoke in commercial and industrial buildings.
Key Features
- 120V AC power supply for broad compatibility with commercial building electrical systems
- 2-position (open/closed) control for straightforward fire and smoke damper operation
- Spring return (S/R) fail-safe mechanism automatically drives the damper to its safe position upon loss of power
- Purpose-built for fire/smoke damper duty — supports life-safety code compliance
- Siemens Building Technology quality construction for long-term reliability in critical applications
- Compact, direct-mount design simplifies installation on standard fire/smoke dampers
Application
The GJD221.1U is ideal for use in commercial HVAC systems where fire and smoke control dampers are required by building codes and life-safety standards. The spring return mechanism ensures the damper moves to its fail-safe position automatically during a power interruption or fire event, making it a trusted choice for engineers and contractors specifying UL-listed fire/smoke control systems.
Why Choose Siemens Building Technology
Siemens Building Technology is a globally recognized leader in building automation and life-safety controls. Their actuators are engineered to deliver consistent performance, ease of installation, and long service life — backed by a brand trusted by HVAC professionals worldwide.
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