Description
The ebm-papst W3G300-ME48-11 (also known as W3G300ME4811) is an automotive-grade brushless EC axial fan engineered with an integrated M3G084-BF motor and an aerodynamic wall ring housing featuring stationary guide vanes, measuring Ø300 mm (11.81 in) in diameter with an overall outer frame profile of Ø337 × 76.7 mm (Ø13.27 × 3.02 in). Operating on a nominal 26 VDC supply across an extended 16 to 32 VDC range, this 7-blade unit generates a maximum free-air delivery of 1,815 CFM (3,085 m³/h) at 3,650 RPM while drawing 320 W and overcoming static pressures up to 1.61 in H₂O (400 Pa). Robustly built with a rugged PP plastic housing, heat-stabilized PA plastic impeller, and maintenance-free sealed dual ball bearings, the assembly delivers reliable S1 continuous duty under harsh thermal conditions from -40 °C to +70 °C (-40 °F to +158 °F). Advanced onboard drive electronics provide seamless 0–10 V / PWM speed control, open-collector diagnostic feedback, 58 V load dump protection, and IP6K9K ingress sealing when coupled to its 4-pole automotive-grade interface connector.
Key Features
- Automotive Ingress Protection: Rugged IP6K9K electronics sealing and IP24 KM motor rating withstand high-pressure washdowns.
- Aerodynamic Guide Vanes: Integrated PP plastic housing vanes maximize static pressure efficiency up to 1.61 in H₂O.
- Brushless EC Drive: Highly efficient M3G084-BF motor delivers 1,815 CFM airflow with active current limitation.
- Flexible Speed Modulation: Supports 0-10 VDC and PWM speed inputs alongside open-collector diagnostic status feedback.
- Automotive Transient Protection: Handles harsh electrical environments with 58 V load dump suppression and soft starting.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | W3G300-ME48-11 |
| Alternate Part Number | W3G300ME4811 |
| Integrated Motor Model | M3G084-BF |
| Product Series | W3G300 / W2G300 Automotive Series |
| Product Category | EC Axial Fans |
| Fan / Component Type | Automotive Brushless EC Axial Fan with Guide Vanes |
| Phase & Supply Type | DC |
| Rated Voltage | 26 VDC |
| Operating Voltage Range | 16.0 to 32.0 VDC |
| Nominal Speed (RPM) | 3,650 RPM |
| Speed at Optimum ErP Point | 3,595 RPM |
| Rated Power Consumption | 320 W |
| Power Consumption at Max Load | 376 W |
| Power Consumption (ErP Optimum) | 0.36 kW (360 W) |
| Rated Current Draw | 12.40 A |
| Max. Current Draw | 14.46 A (at 400 Pa load) |
| Standby Current | < 500 µA |
| Maximum Airflow (Free Air) | 1,815 CFM (3,085 m³/h) |
| Airflow at Optimum ErP Point | 1,136 CFM (1,930 m³/h) |
| Airflow at Max Load | 860 CFM (1,465 m³/h) |
| Maximum Static Pressure | 1.61 in H₂O (400 Pa) |
| Static Pressure Increase (ErP Optimum) | 1.33 in H₂O (331 Pa) |
| Noise Level (Sound Pressure LpAin) | 80 dB(A) (fa) / 84 dB(A) (max load) at 1 m |
| Sound Power Level (LwAin) | 88 dB(A) (fa) / 91 dB(A) (max load) |
| Overall Efficiency (ηes) | 54.4% (ErP 2015 target: 30.9%) |
| Efficiency Grade (N) | 63.5 (ErP 2015 target: 40) |
| Measurement & Efficiency Category | A / Static |
| Specific Ratio | 1.00 |
| Airflow Direction | V (intake over struts) |
| Direction of Rotation | Clockwise, viewed toward rotor |
| Nominal Impeller Diameter | 300 mm (11.81 in) |
| Motor Size | 84 |
| Number of Blades | 7 |
| Overall Dimensions | Ø 337 mm × 76.7 mm (Ø 13.27 in × 3.02 in) |
| Weight | 2.0 kg (4.41 lbs) |
| Housing Material | PP Plastic (with integrated guide vanes) |
| Impeller Blade Material | PA Plastic |
| Bearing Type | Sealed Ball Bearings |
| Dynamic Balancing Grade | G 16 (DIN ISO 1940-1) |
| Installation Position | Any |
| Operating Duty / Mode | S1 Continuous Operation |
| Termination & Connector Type | Integrated 4-Pole Male Automotive Plug |
| Mating Connector Specification | TE Connectivity 1-1718628-1 (crimp contacts TE 1-968857-1 / 1-968855-1, seals TE 828905-1 / 828904-1) |
| Wiring Pinout Assignment | Pin 1.3: Power Supply (+UB) | Pin 1.4: Ground (GND) | Pin 1.2: Control Input 0-10V / PWM | Pin 1.1: Diagnostic Output (DIAG) |
| Control Input Specification (Pin 1.2) | Ri > 27 kΩ; 0-10 V (0.5V standby, 1.5V min speed, 9.5V max speed) or PWM 1-10 kHz (12V-UB, <1% standby, 10% min speed, 95% max speed) |
| Diagnostic Output Specification (Pin 1.1) | Open Collector (Isource max = 10 mA, Rsource = 2 kΩ, Rsink = 100 kΩ; Fan OK = Low, Fan Error = High) |
| Integrated Protection Features | Thermal Overload Protection for Electronics, Motor Current Limitation, Power Limiter, Soft Start, Reverse Polarity Protection |
| Automotive Transient Protection | 58 V Load Dump Protection |
| Insulation Class | Class B |
| Ingress Protection Rating | Motor IP24 KM, Electronics IP6K9K (with mating connector installed) |
| Environmental Protection Class | H4 |
| Operating Temperature Range | -40 °C to +70 °C (-40 °F to +158 °F) |
| Temperature Derating Limit | +70 °C to +85 °C (+158 °F to +185 °F) |
| Storage / Transport Temperature | -40 °C to +85 °C (-40 °F to +185 °F) |
| Service Life (L10) | 40,000 Hours at typical operating conditions |
| Standards & Compliance | EAC, RoHS3 Compliant, Commission Regulation (EU) 327/2011 |
Applications
The ebm-papst W3G300-ME48-11 is purpose-built for heavy-duty commercial vehicle engine thermal management, electric bus battery pack cooling plenums, and agricultural machinery cabin air conditioning condensers. It delivers high-pressure forced ventilation across off-highway mobile equipment radiators, construction equipment auxiliary oil heat exchangers, and hybrid powertrain electronic chillers. This axial fan is also widely utilized in transport refrigeration condensing units, mobile emergency vehicle HVAC systems, and ruggedized military power generation enclosures requiring sealed washdown durability.
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