Description
The ebm-papst R3G250-RE07-07 (also known as R3G250RE0707) is a high-efficiency backward-curved EC centrifugal motorized impeller engineered around the electronically commutated M3G055-DF motor with an aerodynamic diameter of 250 mm (9.84 in). Operating on a flexible 200 to 240 VAC (50/60 Hz) single-phase supply, it delivers up to 840 CFM (1,430 m³/h) of free air volume flow and reaches static back pressures up to 2.01 in H₂O (500 Pa) while consuming 170 W at full load. The unit is constructed with a rugged 7-blade PA plastic impeller, a die-cast aluminum electronics enclosure, and maintenance-free dual ball bearings rated for IP54 ingress protection. Featuring onboard speed regulation via 0–10 VDC / PWM control, a dedicated tachometer output, and integrated thermal overload protection, it ensures optimized thermal performance in compact air-handling architectures.
Key Features
- High-Efficiency EC Motor: Integrated M3G055-DF electronically commutated motor delivers superior static efficiency up to 57.4% under ErP 2015 standards.
- Aerodynamic Impeller Design: 7-blade backward-curved PA plastic wheel optimizes airflow volume and static pressure while minimizing intake acoustic emissions.
- Flexible Speed Modulation: Supports linear 0–10 VDC and PWM control inputs alongside an integrated 10 VDC auxiliary sensor supply.
- Comprehensive Electronic Protection: Built-in soft start, motor current limiting, line undervoltage detection, and active electronic thermal overload management.
- Rugged Industrial Enclosure: Die-cast aluminum electronics housing, thick-film passivated rotor surface, and IP54 sealing support demanding environmental operations.
- Universal Mounting Flexibility: Precision-balanced motorized impeller installs in any orientation with dual pre-wired power and control harness leads.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | R3G250-RE07-07 |
| Alternate Part Number | R3G250RE0707 |
| Integrated Motor Model | M3G055-DF |
| Product Series | RadiCal® |
| Product Category | EC Centrifugal Fans |
| Fan / Component Type | Motorized Impeller (Unhoused Centrifugal Fan) |
| Phase & Supply Type | 1~ Single-Phase AC |
| Rated Voltage | 230 VAC |
| Operating Voltage Range | 200 to 240 VAC |
| Frequency | 50 / 60 Hz |
| Speed (RPM) | 2510 RPM (Max. Load) / 2650 RPM (Free Air) |
| Power Consumption | 170 W (Nominal Max Load) / 143 W (Free Air) |
| Power Consumption Ped (ErP) | 0.16 kW (160 W) |
| Rated Current Draw | 1.40 A (Max. Load) / 1.18 A (Free Air) |
| Airflow (Max. Free Air) | 840 CFM (1430 m³/h) |
| Airflow qv (ErP Optimum) | 533 CFM (905 m³/h) |
| Static Pressure Increase (Max.) | 2.01 in H₂O (500 Pa) |
| Pressure Increase pfs (ErP Optimum) | 1.37 in H₂O (340 Pa) |
| Sound Pressure Level (LpAin) | 59 dB(A) (Max. Load) / 70 dB(A) (Free Air) |
| Sound Power Level (LwAin) | 67 dB(A) (Max. Load) / 77 dB(A) (Free Air) |
| Impeller Size | 250 mm (9.84 in) |
| Number of Blades | 7 |
| Overall Dimensions | Ø 255 mm × 99.0 mm (Ø 10.04 in × 3.90 in) |
| Electronics Housing Material | Die-Cast Aluminum |
| Impeller Material | PA Plastic |
| Rotor Surface | Thick-Film Passivated |
| Bearing Type | Maintenance-Free Ball Bearings |
| Direction of Rotation | Clockwise, viewed toward rotor |
| Installation Position | Any |
| Condensation Drainage Holes | None, open rotor |
| Operating Mode / Duty Cycle | S1 (Continuous Operation) |
| Weight | 1.9 kg (4.19 lbs) |
| Termination & Cable Specs | PVC cable 3x AWG20 (Power) & PVC cable 4x AWG22 (Control) with crimped splices |
| Power Connection Pinout | Black (L – Phase), Blue (N – Neutral), Green/Yellow (PE – Protective Earth) |
| Control Connection Pinout | Yellow (0-10V / PWM Input, Ri=100 kΩ), White (Tach Output, 1 pulse/rev, Open Collector, Isink max 10 mA), Red (+10 VDC Output, max 10 mA), Blue (GND – Control Reference) |
| Speed Control Interface | 0-10 VDC / PWM Input (SELV) |
| Auxiliary Voltage Output | 10 VDC ±3%, max. 10 mA, short-circuit-proof (SELV) |
| Tachometer Output | 1 pulse per revolution, open collector, max. 10 mA sink |
| Integrated Electronic Features | Soft start, motor current limitation, line undervoltage detection |
| Motor Protection | Active electronic thermal overload protection for motor and electronics |
| Touch Current (IEC 60990) | <= 3.5 mA (Measuring circuit Fig. 4, TN system) |
| Electrical Protection Class | Class I (with customer PE connection) |
| Insulation Class | Class B |
| Ingress Protection (IP) | IP54 |
| Moisture / Environmental Class | H1 |
| Operating Temperature Range | -25 °C to +60 °C (-13 °F to +140 °F) |
| Storage / Transport Temperature Range | -40 °C to +80 °C (-40 °F to +176 °F) |
| ErP Overall Efficiency (ηes) | 57.4% (Static, Category A, Efficiency Grade N=76) |
| EMC Immunity to Interference | According to EN 61000-6-2 (Industrial Environment) |
| EMC Interference Emission | According to EN 61000-6-4 (Industrial Environment) |
| Standards & Compliance | EN 60335-1, CE, UL 1004-7 + 60730-1, CSA C22.2 No. 77 + CAN/CSA-E60730-1, EAC, CCC, RoHS3 |
Applications
The ebm-papst R3G250-RE07-07 motorized centrifugal impeller is primarily engineered for precision air handling inside cleanroom Fan Filter Units (FFUs), data center server rack cooling plenums, and commercial Heat Recovery Ventilation (HRV/ERV) units. It serves as a drop-in OEM thermal management component for industrial electronics enclosures, variable frequency drive (VFD) converter cubicles, and railway auxiliary converters requiring reliable static pressure development. Additionally, this backward-curved fan module is widely integrated into medical diagnostic equipment, telecommunications shelter HVAC packages, and biological safety cabinets requiring tight closed-loop airflow regulation.
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