Description
The ebm-papst W2D250-GA04-09 (also known as W2D250GA0409) is an industrial three-phase AC axial fan integrated with an M2D068-DF external rotor motor and a heavy-duty square full nozzle housing measuring 250 mm (9.84 in). Engineered for dual-frequency 50/60 Hz 400 VAC operation in star (Y) wiring, it delivers free-air volumetric flow rates up to 1085 CFM (1840 m³/h) at 2750 RPM and 1205 CFM (2045 m³/h) at 3050 RPM against back pressures up to 0.56 in H₂O (140 Pa). The assembly incorporates five aerodynamic sickle-shaped S-series blades fabricated from hot-dip galvanized sheet steel, an integrated Hall generator tachometer lead for external speed monitoring, and dual-shielded industrial ball bearings for continuous S1 duty.
Key Features
- Aerodynamic Air Delivery: Delivers up to 1205 CFM (2045 m³/h) and static back pressures up to 140 Pa (0.56 in H₂O).
- Three-Phase M2D068 Motor: High-efficiency external rotor drive engineered for 400 VAC star operation at both 50 Hz and 60 Hz.
- Square Full Nozzle Housing: Pre-galvanized sheet steel frame with black plastic coating minimizes air recirculation and optimizes intake flow.
- Integrated Hall Speed Sensor: Dedicated AWG24 leads provide precision digital pulse feedback for external PLC tachometer monitoring and closed-loop control.
- S-Series Sickle Blades: Five hot-dip galvanized steel blades reduce acoustic turbulence while sustaining high pressure under heavy aerodynamic loads.
- Thermal & Mechanical Safety: Equipped with dual TOP thermal overload leads, Class B winding insulation, and robust dual ball bearings.
- Global Industrial Compliance: Certified to EN 60335-1 standards with official CCC, EAC, and CE regulatory approvals for worldwide deployment.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | W2D250-GA04-09 |
| Alternate Part Number | W2D250GA0409 |
| Integrated Motor Model | M2D068-DF |
| Product Series | S series (sickle-shaped blades) |
| Product Category | AC Axial Fans |
| Fan / Component Type | AC axial fan with square full nozzle |
| Phase & Supply Type | 3-Phase AC (3~) |
| Motor Wiring Configuration | Star (Y) connection |
| Rated Voltage | 400 VAC |
| Operating Voltage Range | 380 to 415 VAC |
| Frequency | 50 / 60 Hz |
| Speed (RPM) | 2750 RPM (50 Hz) / 3050 RPM (60 Hz) |
| Rated Input Power | 120 W (50 Hz) / 190 W (60 Hz) |
| Maximum Power Consumption (Measured Curve) | 151 W (50 Hz) / 212 W (60 Hz) |
| Rated Current Draw | 0.27 A (50 Hz) / 0.33 A (60 Hz) |
| Maximum Current Draw (Measured Curve) | 0.30 A (50 Hz) / 0.36 A (60 Hz) |
| ErP Overall Efficiency (ηes) | 29.5% (Req. 2015: 28.3%) |
| ErP Efficiency Grade (N) | 41.2 (Req. 2015: 40) |
| ErP Measurement & Efficiency Category | Category A / Static |
| Maximum Airflow | 1085 CFM (1840 m³/h) at 50 Hz / 1205 CFM (2045 m³/h) at 60 Hz |
| Maximum Back Pressure | 0.46 in H₂O (115 Pa) at 50 Hz / 0.56 in H₂O (140 Pa) at 60 Hz |
| Fan Size | 250 mm (9.84 in) |
| Number of Blades | 5 |
| Impeller Material | Sheet steel, hot-dip galvanized |
| Fan Housing Material | Sheet steel, pre-galvanized and coated with black plastic |
| Guard Grille Material | Steel, phosphated and coated with black plastic |
| Rotor Surface | Painted black |
| Bearing Type | Maintenance-free ball bearings |
| Airflow Direction | “V” (exhaust over struts / intake through nozzle) |
| Direction of Rotation | Counterclockwise (CCW), viewed toward rotor |
| Installation Position | Shaft horizontal or rotor on bottom (rotor on top on request) |
| Condensation Drainage Holes | None |
| Operating Mode | Continuous operation (S1) |
| Weight | 3.0 kg (6.61 lbs) |
| Cable & Termination | Lateral PVC cable with 4x crimped splices and Hall generator leads |
| Speed Monitoring Interface | Brought-out AWG24 (300V) Hall generator sensor leads |
| Motor Wiring Pinout | L1 = Black, L2 = Blue, L3 = Brown, PE = Green/Yellow |
| Thermal Protection Leads | TOP = 2x Gray |
| Hall Sensor Lead Pinout | Pin 2 = Red (+5 V), Pin 3 = White (Output), Pin 4 = Black (0 V) |
| Motor Protection | Thermal overload protector (TOP) brought out externally |
| Electrical Protection Class | Class I (with customer connection of protective earth) |
| Touch Current (IEC 60990) | < 0.75 mA (measuring circuit Fig. 4, TN system) |
| Degree of Protection | IP00 |
| Insulation Class | Class B |
| Moisture & Environmental Protection | F5 |
| Operating Ambient Temperature | -25 °C to +60 °C (-13 °F to +140 °F) at 50 Hz / -25 °C to +75 °C (-13 °F to +167 °F) at 60 Hz |
| Storage / Transport Ambient Temperature | -40 °C to +80 °C (-40 °F to +176 °F) |
| Standards & Compliance | EN 60335-1, CE, CCC, EAC, ErP 2015 |
Applications
The ebm-papst W2D250-GA04-09 is widely deployed in industrial chiller condensers, agricultural ventilation housings, commercial refrigeration evaporators, and process heat exchangers. It provides forced convection for factory floor variable frequency drive (VFD) cabinets, central HVAC air distribution panels, and power conversion substations. Maintenance engineers and machine builders also integrate this nozzle assembly into drying tunnels, compressor cooling bays, and heavy automated machine tool enclosures requiring directional high-volume exhaust.
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