Siemens GDB181.1E/3 OpenAir VAV Compact Controller, 5 Nm, AC 24 V
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The Siemens GDB181.1E/3 is an OpenAir VAV compact controller combining an electric damper actuator, differential pressure sensor, and air volume flow controller for HVAC applications. It features a nominal torque of 5 Nm, AC 24 V operating voltage, and configurable DC 0–10 V or 2–10 V control and feedback signals. The integrated differential pressure sensor has a measuring range of 0–500 Pa, with an application range of 0–300 Pa. The controller supports variable and constant air volume flow regulation in ventilation systems.
| Manufacturer | Siemens |
| Product Number | GDB181.1E/3 |
| Product Family | OpenAir |
| Product Type | VAV Compact Controller |
| Operating Voltage | AC 24 V ±20% (SELV) / AC 24 V Class 2 (US) |
| Frequency | 50/60 Hz |
| Nominal Torque | 5 Nm |
| Maximum Torque | Less than 7 Nm |
| Nominal Rotation Angle | 90° |
| Runtime for 90° Rotation | 150 s at 50 Hz / 125 s at 60 Hz |
| Control Signal Input | DC 0–10 V / 2–10 V |
| Feedback Signal Output | DC 0–10 V / 2–10 V |
| Differential Pressure Measuring Range | 0–500 Pa |
| Differential Pressure Application Range | 0–300 Pa |
| Power Consumption (Running, 50 Hz) | 3 VA / 2.5 W |
| Power Consumption (Standby, 50 Hz) | 1 VA / 0.5 W |
| Degree of Protection | IP54 per EN 60529 (Subject to Mounting Requirements) |
| Operating Temperature | 0 to +50 °C |
| Dimensions (W × H × D) | 71 × 158 × 61 mm |
| Weight (Excluding Packaging) | 0.6 kg |
The Siemens GDB181.1E/3 is designed for variable air volume (VAV) and constant air volume (CAV) control in HVAC ventilation systems. Supported operating modes include continuous air volume flow control, 3-position open-loop control, and step control. Its integrated differential pressure sensor and damper actuator enable air volume regulation in compatible ventilation installations.
Apexon Supply provides B2B sourcing and replacement support for Siemens OpenAir HVAC control components. When selecting a replacement, verify the exact product number, nominal torque, AC supply voltage, control signal configuration, differential pressure requirements, damper shaft dimensions, and commissioning parameters. Technical alignment support is available for industrial maintenance teams, HVAC contractors, and building automation system integrators.
To request a quotation for Siemens GDB181.1E/3, provide the required quantity and application specifications. Contact Apexon Supply for B2B sourcing, product identification, and replacement procurement support.
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