Siemens GVD326.1U OpenAir Spring Return Fire and Smoke Damper Actuator 230VAC 200 lb-in

The Siemens GVD326.1U is a heavy-duty, spring return electronic fire and smoke damper actuator from the OpenAir GVD Series, designed for 230VAC operation. Delivering 200 lb-in (23 Nm) of torque, this actuator is built for demanding commercial HVAC applications requiring reliable, code-compliant control of UL-listed fire and smoke combination dampers.

Featuring a 2-position On/Off control signal, the GVD326.1U powers the damper open in 30 seconds and returns it to the fail-safe closed position via spring return in 15 seconds or less — ensuring automatic damper closure during power loss or fire events. The unit also integrates a built-in Electronic Fusible Link (EFL) capability for added safety, and includes two fixed built-in auxiliary switches for position feedback to the building automation or fire alarm system.

Key Features:

• Torque Output: 200 lb-in (23 Nm)
• Supply Voltage: 230VAC, 50/60 Hz
• Control Signal: 2-Position On/Off
• Run Time: 30 seconds nominal (90° rotation at 60 Hz)
• Spring Return Time: 15 seconds or less (mechanical fail-safe)
• Built-in Electronic Fusible Link (EFL) compatibility
• Two fixed built-in auxiliary switches for position feedback
• Pre-cabled insulated lead wires for simplified installation
• UL 555S certified for fire and smoke damper applications
• Compatible with UL-listed smoke control dampers and combination fire/smoke rated dampers

Compatible Electronic Fusible Link (EFL) accessories are available separately: ASK791.165 (165°F), ASK791.212 (212°F), ASK791.250 (250°F), and ASK791.350 (350°F). The GVD326.1U is part of Siemens' comprehensive OpenAir damper actuator family, ensuring dependable life-safety performance in commercial and institutional HVAC systems.