Description
The ebm-papst K3G450-PB29-N1 (also known as K3G450PB29N1) is a high-performance RadiPac backward-curved EC centrifugal module engineered with a heavy-duty support bracket and an integrated M3G150-IF permanent magnet brushless motor measuring Ø450 mm (17.72 in). Operating on a wide three-phase 380–480 VAC supply at 50/60 Hz, this module delivers up to 9,710 CFM (16,500 m³/h) of airflow and maximum static back pressures of 8.43 in H₂O (2,100 Pa) while consuming 6,800 W at 2,800 RPM. Constructed with a 5-blade sheet aluminum impeller, galvanized steel inlet ring with integrated pressure tap, and die-cast aluminum electronics housing, the unit provides comprehensive electronic motor protection, RS-485 Modbus RTU integration, and rugged IP55 sealing for demanding air-moving installations.
Key Features
- High-Efficiency RadiPac Impeller: Optimized five-blade backward-curved aluminum wheel achieves static overall efficiency up to 68.8% in plenum environments.
- Integrated EC Motor Drive: Brushless M3G150-IF motor incorporates passive PFC, thermal overload protection, soft start, and phase-failure detection.
- Versatile Modbus RTU Control: Native RS-485 serial bus interface supports remote parametrization, continuous monitoring, and programmable analog 0–10V or PWM inputs.
- Structural Support Bracket: Heavy-gauge painted steel bracket and galvanized support plate provide rigid mechanical anchoring with horizontal or vertical orientation.
- Precision Flow Measurement: Aerodynamic galvanized inlet nozzle features a calibrated pressure tap with a k-factor of 240 for volume calculation.
- Industrial Environmental Rating: IP55 ingress protection, Class F insulation, and H1 environmental moisture class resist harsh ambient conditions.
Technical Specifications
| Manufacturer | ebm-papst |
|---|---|
| Manufacturer Part Number (MPN) | K3G450-PB29-N1 |
| Alternate Part Number | K3G450PB29N1 |
| Item Number | 58260-5-9980 |
| Integrated Motor Model | M3G150-IF |
| Motor Size | 150 |
| Product Series | RadiPac |
| Product Category | EC Centrifugal Fans |
| Fan / Component Type | EC centrifugal module with support bracket, single-intake backward-curved |
| Phase & Supply Type | 3-Phase AC (EC / Brushless) |
| Rated Voltage | 400 VAC |
| Operating Voltage Range | 380 to 480 VAC |
| Frequency | 50 / 60 Hz |
| Speed (RPM) | 2800 RPM |
| Power Rating | 6800 W (6.8 kW) |
| Rated Current | 10.3 A |
| Power Consumption at Optimum Efficiency (Ped) | 6.57 kW |
| Speed at Optimum Efficiency (n) | 2795 RPM |
| Overall Efficiency (ηes) | 68.8% |
| Efficiency Grade (N) | 70.7 (Req. 2015: 62) |
| Specific Ratio | 1.02 |
| Measurement Category | A |
| Efficiency Category | Static |
| Maximum Airflow | 9710 CFM (16500 m³/h) |
| Airflow at Optimum Efficiency (qv) | 5318 CFM (9035 m³/h) |
| Maximum Static Pressure | 8.43 in H₂O (2100 Pa) |
| Pressure Increase at Optimum Efficiency (pfs) | 7.02 in H₂O (1749 Pa) |
| Intake Sound Pressure Level (LpAin) | 82 to 96 dB(A) at 1 m |
| Intake Sound Power Level (LwAin) | 88 to 102 dB(A) |
| Outlet Sound Power Level (LwAout) | 93 to 103 dB(A) |
| Impeller Size | Ø 450 mm (17.72 in) |
| Number of Blades | 5 |
| Impeller Material | Sheet aluminum |
| Electronics Housing Material | Die-cast aluminum |
| Rotor Surface | Painted black |
| Support Plate Material | Sheet steel, galvanized |
| Support Bracket Material | Steel, painted black |
| Inlet Nozzle Material | Sheet steel, galvanized |
| Inlet Pressure Tap K-Factor | 240 |
| Direction of Rotation | Clockwise, viewed toward rotor |
| Bearing Type | Maintenance-free ball bearings |
| Operating Mode / Duty Cycle | S1 (Continuous operation) |
| Installation Position | Shaft horizontal or rotor on bottom (rotor on top on request) |
| Condensation Drainage Holes | On rotor side |
| Weight | 45.2 kg (99.65 lbs) |
| Termination & Cable Specs | Integrated terminal box; cable clamp dia. 4-10 mm (torque 4±0.6 Nm) and 5-14 mm (torque 6±0.9 Nm) |
| Wiring Pinout / Connection | CON1: L1, L2, L3, PE; CON2: RSA, RSB, GND, IO1, IO2, IO3, Vout, COM, NC |
| Control & Monitoring Features | RS-485 Modbus RTU V6.4, 0-10 V / PWM input, 0-10 V output, integrated PI controller, status relay (250 VAC / 2 A), diagnostic LED |
| Auxiliary Voltage Output | 3.3 to 24 VDC ±5%, Pmax = 800 mW (factory set to 10 VDC); alternatively 15-50 VDC parameterization input |
| Integrated Sensors | Vibration sensor, inlet pressure tap, line undervoltage / phase failure detection |
| Power Factor Correction (PFC) | Passive (via low-capacitance DC link) |
| Motor Protection | Electronic motor protection, motor current limitation, thermal overload protection for electronics and motor |
| Electrical Protection Class | Class I (with protective earth connected) |
| Degree of Protection | IP55 |
| Insulation Class | Class F |
| Moisture & Environmental Protection Class | H1 |
| Touch Current (IEC 60990) | <= 3.5 mA (measuring circuit Fig. 4, TN system) |
| EMC Immunity to Interference | According to EN 61000-6-2 (Industrial environment) |
| EMC Interference Emission | According to EN 61000-6-4 (Industrial environment) |
| Operating Temperature Range | -40 °C to +40 °C (-40 °F to +104 °F) |
| Storage / Transport Temperature Range | -40 °C to +80 °C (-40 °F to +176 °F) |
| Ambient Temperature Operating Note | Occasional start-up permitted between -40°C and -25°C; continuous operation below -25°C requires special low-temperature bearings |
| Standards & Compliance | EN 61800-5-1, CE, Commission Regulation (EU) 327/2011 |
| Safety Approvals | UL 1004-7 + 60730-1, CSA C22.2 No. 77 + CAN/CSA-E60730-1, EAC |
Applications
The ebm-papst K3G450-PB29-N1 EC centrifugal fan module serves as a primary air mover inside custom commercial air handling units (AHUs), modular rooftop HVAC systems, and built-up building ventilation plenums. It is extensively installed across mission-critical data center CRAC/CRAH precision cooling equipment, cleanroom recirculating fan filter arrays, and industrial process ventilation towers requiring precise airflow modulation. Plant engineers and OEM equipment builders also specify this motorized module for hospital isolation exhaust units, paint booth ventilation systems, and large-scale industrial drying cabinets.
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