The Ziehl-Abegg GR50I-ZID.GL.CR (116905/A01) is a high-performance EC centrifugal fan designed for commercial ventilation, air handling units (AHUs) and demanding air movement applications.
Featuring ECblue IE5 motor technology, an integrated controller and a backward-curved impeller, the GR50I delivers efficient, reliable and variable-speed air movement. The integrated controller allows the fan to be accurately controlled to match the requirements of the ventilation system, helping to minimise unnecessary energy consumption during operation.
With a 4.60 kW motor, maximum speed of 2,150 rpm and IP55 protection, this fan is well suited to continuous-duty commercial and industrial ventilation applications.
At its optimum efficiency operating point, the GR50I-ZID.GL.CR delivers approximately 9,635 m³/h of airflow at 1,221 Pa pressure, with an input power of approximately 4,650 W. (Electric Motors Supplier)
The fan also features an inlet nozzle with an integrated volume-flow measuring device, making it particularly suitable for AHU applications where accurate airflow measurement is required.
Replacing an existing AHU fan? Send us a photo of your existing fan label, along with the airflow and pressure requirements if available, and we can help confirm whether this Ziehl-Abegg fan is suitable for your application.
Key Features
- ECblue IE5 motor technology for high efficiency
- Integrated EC controller for variable-speed operation
- Backward-curved impeller for efficient air movement
- 4.60 kW rated power input
- 2,150 rpm maximum speed
- 3~ 380–480 V, 50/60 Hz supply
- IP55 protection rating
- Integrated active thermal motor management
- Moisture and hot-climate protection
- Ball bearings with long-life lubrication
- Inlet nozzle with integrated volume-flow measuring device
- Aluminium rotor construction
- ZAmid impeller blades
- IE5 efficiency class
- ErP 2015 compliant
- ErP 2026 compliant
- UL/CSA labelled
- Suitable for demanding AHU and commercial ventilation applications
Technical Specification
| Specification | Detail |
|---|---|
| Type | GR50I-ZID.GL.CR |
| Article number | 116905/A01 |
| Fan design | Ventilation unit with backward-curved impeller |
| Fan design / connection | D flange |
| Motor technology | ECblue |
| Efficiency class | IE5 |
| Voltage | 3~ 380–480 V |
| Frequency | 50/60 Hz |
| Power input (P1) | 4.60 kW |
| Current | 7.40–6.00 A |
| Maximum speed | 2,150 rpm |
| Maximum operating temperature | 40°C |
| Minimum operating temperature | -20°C |
| Airflow at ηopt | 9,635 m³/h |
| Pressure increase at ηopt | 1,221 Pa |
| Input power at ηopt | 4,650 W |
| Static efficiency (ηstatA) | 75.1% |
| Efficiency grade | Nactual = 78.6 / Ntarget = 62 |
| Thermal class | THCL155 |
| Protection rating | IP55 |
| Motor protection | Integrated active temperature management |
| Impeller material | ZAmid |
| Rotor material | Aluminium |
| Rotor colour | RAL 5002 – Ultramarine Blue |
| Bearing | Ball bearing with long-life lubrication |
| Inlet nozzle | Galvanised sheet metal with volume-flow measuring device |
| Controller | Integrated |
| Mounting positions | H / Vu / Vo |
| Weight | 54 kg |
Performance
At its optimum efficiency operating point, the GR50I-ZID.GL.CR delivers:
9,635 m³/h airflow @ 1,221 Pa pressure
with an input power of approximately 4,650 W.
The stated static efficiency at this point is 75.1%, with an efficiency grade of Nactual 78.6 against an Ntarget of 62. (Electric Motors Supplier)
Actual fan performance will depend on the system operating point and resistance from ductwork, filters, coils, dampers and other components within the ventilation system.
Ideal Applications
- Air Handling Units (AHUs)
- Commercial ventilation systems
- Industrial ventilation
- AHU fan replacement and refurbishment
- EC fan upgrades
- Large-volume ventilation systems
- Applications requiring variable-speed control
- Continuous-duty air movement applications
Fan Selection
Fan performance depends on the operating point and system resistance. Airflow (m³/h), pressure (Pa), operating hours and system conditions should all be considered when selecting a replacement fan.
If you’re replacing an existing fan, send us a photo of the fan label or your existing fan details and we’ll help you identify a suitable replacement.
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