EBM-Papst W3G800-KU21-05 800mm AxiBlade EC Axial Fan with Square Nozzle
The EBM-Papst W3G800-KU21-05 is a high-capacity 800mm three-phase EC axial fan designed for large refrigeration, HVAC and industrial ventilation systems.
It combines an efficient AxiBlade impeller with a full square nozzle, protective guard grille and advanced electronic controls. The fan delivers up to approximately 29,640m³/h and can be controlled through 0-10V, PWM or RS-485 Modbus.
Features
High-efficiency EC motor technology
800mm AxiBlade axial impeller
Full square nozzle and guard grille
Maximum airflow approximately 29,640m³/h
Wide 380-480V operating range
Variable-speed 0-10V or PWM control
RS-485 Modbus-RTU communication
Integrated PI controller
Configurable control inputs and outputs
Floating alarm relay
LED operating and alarm indication
Soft-start operation
Motor current limitation
Phase-failure and undervoltage detection
Electronic thermal and locked-rotor protection
IP55-rated protection
Specifications
| Specification | Details |
|---|
| Manufacturer | EBM-Papst |
| Model | W3G800-KU21-05 |
| Motor Model | M3G150-IF |
| Fan Type | Variable-speed EC axial fan with square full nozzle |
| Fan Diameter | 800mm |
| Voltage Range | 380-480V AC |
| Nominal Voltage | 400V AC |
| Phase | Three phase |
| Frequency | 50/60Hz |
| Maximum Speed | 1,100 RPM |
| Maximum Free-Air Volume | Approximately 29,640m³/h |
| Power Consumption | 2,900W |
| Current Draw | 4.40A |
| Airflow at Maximum Pressure | Approximately 18,635m³/h |
| Maximum Static Pressure | 260Pa |
| Speed Control | 0-10V DC or PWM |
| Communication | RS-485 Modbus-RTU |
| Control System | Integrated PI controller |
| Status Output | Floating alarm relay |
| Auxiliary Output | Adjustable 3.3-24V DC |
| Sound Pressure Level | Up to 77dB(A) |
| Number of Blades | 5 |
| Blade Type | Sickle-shaped AxiBlade |
| Blade Pitch | 0° |
| Impeller Material | PP plastic |
| Rotation | Clockwise when viewed toward the rotor |
| Airflow Direction | “V” direction |
| Protection Rating | IP55 |
| Insulation Class | Class F |
| Motor Protection | Electronic thermal, reverse-polarity and locked-rotor protection |
| Bearings | Maintenance-free ball bearings |
| Operating Mode | Continuous operation - S1 |
| Operating Temperature | -40°C to +60°C |
| Continuous Low-Temperature Limit | -25°C without special bearings |
| Weight | Approximately 45kg |
| Electrical Connection | Integrated terminal box |
| Housing Material | Galvanised and black-coated sheet steel |
| Guard Material | Black plastic-coated steel |
| Mounting Position | Shaft horizontal or rotor at bottom |
| Approvals | CE, UL, CSA and EAC |
Typical Applications
Large commercial refrigeration condensers
Industrial air-cooled chillers
Cooling towers
Data-centre cooling equipment
Large heat pumps
Industrial heat exchangers
Air-handling and ventilation systems
Process and machinery cooling
EBM-Papst technical datasheet
