Description
ebm-papst W4E420-CP03-70 (also known as W4E420CP0370) is a heavy-duty industrial AC axial fan equipped with a high-efficiency M4E074-GA external rotor motor and an integrated steel wall ring housing with protective guard grille measuring 420 mm (16.54 in). Operating on a 115 VAC, 60 Hz single-phase supply with an external 25 µF run capacitor, this unit delivers up to 3,225 CFM (5,480 m³/h) of high-volume airflow at free air with a nominal speed of 1620 RPM and power consumption of 280 W. Built with 5 sickle-shaped sheet steel blades, heavy galvanized steel wall plate, dual maintenance-free ball bearings, and internal thermal overload protection, it ensures long-term continuous S1 duty across demanding thermal installations.
Key Features
- Sickle-Blade Aerodynamics: Five aerodynamic S-series sheet steel blades optimize intake airflow while significantly curbing operating acoustic turbulence.
- Rugged Housing & Grille: Features galvanized sheet steel housing and welded steel wire guard finished in black plastic coating.
- Integrated Motor Protection: Built-in internal thermal overload protector guards against overheating conditions and locked-rotor electrical faults.
- All-Weather IP44 Sealing: Position-dependent ingress protection incorporates rotor-side condensation drainage holes for reliable continuous duty.
- Dual-Certified Compliance: Thoroughly certified under UL 1004-3 and CSA C22.2 No. 77 standards for North American equipment deployment.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | W4E420-CP03-70 |
| Alternate Part Number | W4E420CP0370 |
| Item Number | 16328-5-9980 |
| Integrated Motor Model | M4E074-GA |
| Product Series | S series (W4E420) |
| Product Category | AC Axial Fans |
| Fan / Component Type | AC axial fan with housing and guard grille |
| Phase & Supply Type | Single-phase (1~) |
| Rated Voltage | 115 VAC |
| Frequency | 60 Hz |
| Speed (RPM) | 1620 RPM |
| Power Rating (Nominal) | 280 W (CE) / 295 W (UL 1004-3) |
| Rated Current | 2.45 A (CE) / 2.50 A (UL 1004-3) |
| Max. Current Draw | 2.88 A (at 80 Pa back pressure) |
| Max. Power Input | 331 W (at 80 Pa back pressure) |
| Run Capacitor | 25 µF / 220 VDB (S2 CE) |
| Airflow (Free Air) | 3225 CFM (5480 m³/h) |
| Max. Back Pressure | 0.32 in H₂O (80 Pa) |
| Noise Level | 74.0 dB(A) |
| Airflow Direction | V (intake over struts) |
| Direction of Rotation | Counterclockwise, viewed toward rotor |
| Fan / Impeller Size | Ø 420 mm (16.54 in) |
| Number of Blades | 5 |
| Housing Material | Sheet steel, galvanized and coated with black plastic (RAL 9005) |
| Impeller Material | Sheet steel, painted black |
| Guard Grille Material | Steel wire, coated with black plastic (RAL 9005) |
| Rotor Surface Finish | Painted black |
| Bearing Type | Dual ball bearings |
| Operating Mode / Duty Cycle | Continuous operation (S1) |
| Installation Position | Shaft horizontal or rotor on bottom (rotor on top on request) |
| Condensation Drainage Holes | On rotor side |
| Weight | 8.7 kg (19.18 lbs) |
| Termination & Cable Specs | PVC AWG20 cable with 4x crimped splices |
| Wiring Pinout / Connection | U1 = Blue, Z = Brown, U2 = Black, PE = Green/Yellow |
| Motor Protection | Thermal overload protector (TOP) internally connected |
| Electrical Protection Class | Class I (with customer protective earth connection) |
| Touch Current (IEC 60990) | < 0.75 mA (measuring circuit Fig. 4, TN system) |
| Insulation Class | Class B |
| Moisture / Environmental Class | H0+ |
| Ingress Protection (IP) | IP44 (installation- and position-dependent per EN 60034-5) |
| Operating Temperature Range | -25 °C to +40 °C (-13 °F to +104 °F) |
| Storage Temperature Range | -40 °C to +80 °C (-40 °F to +176 °F) |
| Standards & Compliance | EN 60335-1, CE, CSA C22.2 No. 77, UL 1004-3, RoHS3 |
Applications
ebm-papst W4E420-CP03-70 axial fan units provide high-capacity air delivery across commercial refrigeration condensers, cold storage evaporators, and process heat exchangers. Their rugged wall-plate frame and integrated safety grille make them an ideal drop-in replacement for industrial ventilation plenums, agricultural climate controllers, and rooftop condenser assemblies. Engineering teams and facility MRO technicians rely on this platform for harsh-environment electronic cooling cabinets and ducted equipment enclosures requiring dependable continuous duty.
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