Siemens Building Technology GQD221.1U Actuator

The Siemens GQD221.1U Actuator is a direct-coupled OpenAir spring return actuator engineered for precise 2-position control in commercial HVAC systems. Operating at 120V AC, this 20 lb-in damper actuator is ideal for constant or variable air volume (VAV) installations, common in exhaust, mixed air, and face-and-bypass applications. Its compact footprint allows for seamless integration into tight enclosures, while the NEMA 1 (IP40) rated housing provides industrial-grade protection. With a 30-second drive runtime and a 15-second fail-safe spring return, it ensures reliable shut-off during power interruptions. This unit features a self-centering shaft coupling for standard damper shafts and comes pre-cabled with a 1/2-inch NPT conduit connection, facilitating rapid field installation for service contractors and building automation specialists. This robust HVAC electronic actuator is designed for high-cycle longevity in residential zone dampers and economizer units needing dependable 2 Nm torque performance.

• 20 lb-in Torque Output: Optimized for small-to-medium HVAC dampers and economizer units.
• 120V AC Power Supply: Compatible with standard line voltage control circuits without the need for external transformers.
• Integrated Spring Return: Mechanical fail-safe functionality ensures the damper returns to a predetermined position upon power loss.
• Compact Design: Small form factor simplifies mounting in limited-space VAV boxes and residential zones.
• Pre-Cabled Installation: Includes three-foot cabling and a 1/2-inch NPT conduit adapter for streamlined wiring.

• Is the Siemens GQD221.1U plenum rated? This specific 120V model is designed for standard use; however, its rugged construction and NEMA 1 rating are suitable for various interior weather-protected environments.
• Does this actuator support modulating control? No, the GQD221.1U is a 2-position (On/Off) actuator. For modulating 0-10V or 2-10V signals, look for the Siemens GQD151 series.
• What is the maximum rotation for this unit? It provides a standard 90-degree angular rotation, suitable for most rotary damper applications.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.