Description
ebm-papst R3G630-FB32-03 (also known as R3G630FB3203) is a heavy-duty, single-intake unhoused backward-curved motorized centrifugal impeller from the RadiCal series, engineered around an integrated M3G150-IF electronically commutated motor with a nominal diameter of Ø 630 mm (24.8 in). Operating on a three-phase supply of 400 VAC (380 to 480 VAC, 50/60 Hz), this industrial blower delivers up to 12,685 m³/h (7,466 CFM) of airflow and 711 Pa (2.855 in H₂O) of static pressure increase at a rated power consumption of 3700 W and 1420 RPM. The assembly features an aerodynamically optimized 6-blade PP plastic impeller, a rugged die-cast aluminum electronics housing rated to IP55, dual precision ball bearings, and a convenient integrated terminal box interface supporting full RS-485 MODBUS-RTU digital communication.
Key Features
- High-Efficiency RadiCal Aerodynamics: Optimally contoured 6-blade PP plastic impeller achieves 71.4% overall static efficiency and low acoustic turbulence.
- Robust Electronics & Ingress Protection: Rugged die-cast aluminum electronics housing with IP55 rating and H1 environmental moisture protection ensures industrial resilience.
- Advanced MODBUS-RTU Control: Integrated RS-485 MODBUS interface alongside configurable I/O and PI controller enables comprehensive digital telemetry and automation.
- Comprehensive Motor Safeguards: Integrated active thermal overload monitoring, line undervoltage, phase failure detection, and current limitation ensure continuous reliability.
- Wide 3-Phase Voltage Input: Operates seamlessly across 380 to 480 VAC at 50/60 Hz with integrated soft start and terminal box wiring.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | R3G630-FB32-03 |
| Alternate Part Number | R3G630FB3203 |
| Integrated Motor Model | M3G150-IF |
| Product Series | RadiCal |
| Product Category | EC Centrifugal Fans |
| Fan / Component Type | Unhoused Backward-Curved Motorized Impeller |
| Phase & Supply Type | 3-Phase AC (Integrated Brushless EC Motor) |
| Nominal Voltage | 400 VAC |
| Operating Voltage Range | 380 to 480 VAC |
| Frequency | 50 / 60 Hz |
| Speed (RPM) | 1420 RPM |
| Power Consumption | 3700 W (3.66 kW at ErP optimum point) |
| Current Draw | 5.7 A |
| Airflow | 7,466 CFM (12,685 m³/h) |
| Static Pressure Increase | 2.855 in H₂O (711 Pa) |
| Overall Static Efficiency (ηes) | 71.4% (ErP 2015 Requirement: 57.4%) |
| Efficiency Grade (N) | 76 (ErP 2015 Requirement: 62) |
| Specific Ratio | 1.01 |
| Airflow Direction | Single-intake radial discharge |
| Impeller Size | Ø 630 mm (24.80 in) |
| Number of Blades | 6 |
| Impeller Material | PP plastic |
| Electronics Housing Material | Die-cast aluminum |
| Rotor Surface | Painted black |
| Bearing Type | Maintenance-free ball bearing |
| Direction of Rotation | Clockwise, viewed toward rotor |
| Installation Position | Shaft horizontal or rotor on bottom (rotor on top on request) |
| Condensation Drainage Holes | Rotor side |
| Operating Mode / Duty Cycle | S1 (Continuous operation) |
| Weight | 28.6 kg (63.05 lbs) |
| Electrical Hookup | Terminal box |
| Cable Gland Compatibility | Cable diameter 4.0 mm to 10.0 mm (Tightening torque 4 ± 0.6 Nm) |
| Terminal Tightening Torque | 1.5 ± 0.2 Nm |
| Control Interface & Protocols | RS-485 MODBUS-RTU, MODBUS V6.0, RFID (ISO 15693 compatible) |
| Control Features | Integrated PI controller, Configurable I/O, External 15-50 VDC input, Voltage output 3.3-24 VDC (Pmax = 800 mW), LED operation/alarm display, Alarm relay |
| Safety Isolation | Control interface with SELV potential safely disconnected from mains |
| Motor Protection | Thermal overload protection (motor and electronics), Motor current limitation, Soft start, Line undervoltage / phase failure detection |
| Ingress Protection (IP) | IP55 |
| Insulation Class | Class F |
| Moisture / Environmental Class | H1 |
| Electrical Protection Class | Class I (with customer protective earth connection) |
| Touch Current (IEC 60990) | <= 3.5 mA (TN system, measuring circuit Fig. 4) |
| EMC Immunity to Interference | According to EN 61000-6-2 (Industrial environment) |
| EMC Interference Emission | According to EN 61000-6-3 (Household environment, except EN 61000-3-2 for equipment > 1 kW) |
| Operating Ambient Temperature | -40 °C to +40 °C (-40 °F to +104 °F) |
| Storage / Transport Temperature | -40 °C to +80 °C (-40 °F to +176 °F) |
| Compatible Inlet Ring Accessory | Inlet ring 63355-2-4013 with pressure tap (k-factor 545) |
| Standards Compliance | EN 61800-5-1, CE, ErP 2015 (Commission Regulation EU 327/2011) |
| Safety Approvals | UL 1004-7 + 60730-1, CSA C22.2 No. 77 + CAN/CSA-E60730-1, EAC |
Applications
ebm-papst R3G630-FB32-03 backward-curved motorized centrifugal impellers are specifically deployed in central air handling units (AHUs), modular cleanroom fan filter units (FFUs), data center computer room air handlers (CRAH), and commercial rooftop heat recovery ventilation (HRV) systems. They are widely configured inside precision chiller condensation sections, process air cooling plenums, and drying tunnels requiring high pressure stability across variable duct networks. Facility engineers and industrial ventilation OEMs rely on this unit for plug-and-play plenum fan retrofits and automated building management system (BMS) integration.
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