Description
The ebm-papst R2E225-AX52-05 (also known as R2E225AX5205) is an unhoused, single-intake backward-curved motorized centrifugal fan powered by an integrated M2E068-DF external rotor motor in an industry-standard Ø225 mm (8.86 in) envelope. Engineered for high aerodynamic efficiency against substantial back pressure, it operates on single-phase 230 VAC supply at 50/60 Hz, delivering up to 660 CFM (1120 m³/h) free air delivery and static pressures up to 2.01 in H₂O (500 Pa) at 3000 RPM. The unit features an aerodynamically optimized 11-blade PA plastic impeller, precision dual ball bearings, an integrated thermal overload protector (TOP), and an IP44-sealed enclosure with rotor-side condensation drainage holes for continuous S1 duty across demanding thermal environments.
Key Features
- Aerodynamic 11-Blade Impeller: Optimized backward-curved PA plastic geometry delivers high static pressure with minimal acoustic emission.
- Rugged External Rotor Motor: Integrated M2E068-DF motor features a black-painted rotor surface and maintenance-free dual ball bearings.
- Internal TOP Thermal Protection: Integrated thermal overload protector safeguards motor windings automatically against overheating and stalled rotor states.
- Industrial IP44 Moisture Resistance: Rated IP44 with H0+ environmental protection and rotor-side condensation drainage holes for horizontal or vertical mounting.
- Pre-Terminated Industrial Cable: Supplied with a 4-conductor PVC 4G 0.5 mm² cable with crimped splices for simplified wiring.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | R2E225-AX52-05 |
| Alternate Part Number | R2E225AX5205 |
| Item Number | 10285-5-9980 |
| Integrated Motor Model | M2E068-DF |
| Product Series | R2E225 |
| Product Category | AC Centrifugal Fans |
| Fan / Component Type | Motorized Impeller (Unhoused Centrifugal Fan) |
| Phase & Supply Type | 1~ Single-Phase AC |
| Rated Voltage | 230 VAC |
| Frequency | 50 Hz / 60 Hz |
| Speed (RPM) | 2700 RPM (50 Hz) / 3000 RPM (60 Hz) |
| Power Consumption | 115 W (50 Hz) / 165 W (60 Hz) |
| Rated Current | 0.51 A (50 Hz) / 0.72 A (60 Hz) |
| Peak Operating Current Draw | 0.60 A (50 Hz at Max Load) / 0.83 A (60 Hz at Max Load) |
| Peak Power Consumption | 136 W (50 Hz at Max Load) / 191 W (60 Hz at Max Load) |
| Run Capacitor Required | 3.0 µF / 450 VDB |
| Airflow (Free Air) | 595 CFM (1015 m³/h) at 50 Hz / 660 CFM (1120 m³/h) at 60 Hz |
| Maximum Measured Static Pressure | 1.61 in H₂O (400 Pa) at 50 Hz / 2.01 in H₂O (500 Pa) at 60 Hz |
| Min. Back Pressure | 0 Pa (0 in H₂O) |
| Fan / Impeller Diameter | Ø 225 mm (8.86 in) |
| Overall Depth / Thickness | 85.0 mm (3.35 in) |
| Number of Blades | 11 |
| Impeller Material | PA plastic (Polyamide) |
| Rotor Surface | Painted black |
| Bearing Type | Dual Ball Bearings |
| Direction of Rotation | Clockwise (viewed toward rotor) |
| Installation Position | Shaft horizontal or rotor on bottom (rotor on top on request) |
| Condensation Drainage Holes | On rotor side |
| Operating Mode / Duty Cycle | Continuous operation (S1) |
| Weight | 2.33 kg (5.14 lbs) |
| Termination & Cable Specs | PVC cable 4G 0.5 mm², 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 |
| Ingress Protection (IP) | IP44 (installation- and position-dependent per EN 60034-5) |
| Moisture / Environmental Protection Class | H0+ |
| Operating Ambient Temperature | -25 °C to +55 °C (-13 °F to +131 °F) at 50 Hz / -25 °C to +40 °C (-13 °F to +104 °F) at 60 Hz |
| Storage / Transport Temperature | -40 °C to +80 °C (-40 °F to +176 °F) |
| Conformity with Standards | EN 60335-1, ISO 5801 (Category A), ISO 13347 |
| Approvals & Certifications | CCC, EAC, RoHS3 Compliant |
| Compatible Accessory Part | Inlet ring part no. 96358-2-4013 (optional, not included) |
| Max Screw Insertion Depth | 5 mm (0.20 in) |
Applications
The ebm-papst R2E225-AX52-05 motorized centrifugal impeller is engineered for high-static-pressure air handling in cleanroom Fan Filter Units (FFUs), data center CRAC/CRAH precision cooling plenums, and building heat recovery ventilation (HRV/ERV) modules. It serves as an essential component in ducted commercial HVAC systems, roof extraction ventilators, and laminar flow hoods requiring compact, unhoused backward-curved air movement. Thermal engineers also specify this impeller for electronic enclosure heat exchangers, welding machine cooling tunnels, and telecommunications shelter climate control cabinets.
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