New-old-stock ebm-papst K3G280-AU11-C2 — 400V 3-phase EC centrifugal cabinet blower, 1000W / 3100 RPM, integrated VSD, includes 19 ft Hubbell twist-lock power cable and 12 ft 4–20 mA control cable

Discover this high-performance ebm-papst K3G280-AU11-C2 AC cabinet blower (Cabinet blower, inverter cooler, EC fan, RadiPac, industrial cooling, HVAC replacement), a top-tier industrial centrifugal fan designed for efficient cooling and ventilation in demanding applications like HVAC systems, photovoltaic inverters, data centers, and machinery enclosures. This NEW old stock unit (no original packaging) features GREEN TECH EC technology with an integrated variable speed drive (VSD) for precise control, energy savings, and quiet operation. Made in Germany, it's built for reliability with IP54 protection against dust and water splashes.

Key highlights include 3-phase 380-480 VAC input, 3100 RPM max speed, and robust airflow up to 2675 m³/h at optimum efficiency. The complete assembly comes with a 19 ft SOOW power cable (Hubbell twist-lock plug) and a 12 ft shielded control cable for 4-20 mA signaling. Ideal for built-in installations, it offers MODBUS-RTU communication, alarm relay, and thermal overload protection. Certifications include cULus, CE, and EAC for global compliance.

Whether you're upgrading industrial cooling fans, centrifugal blowers, or EC fans, this unit delivers superior performance with ball bearings, soft start, and phase failure detection. Free shipping included. Perfect for engineers seeking variable speed centrifugal fans or high-efficiency cabinet blowers.

Specifications

• General:
  • Manufacturer: ebm-papst
  • Model: K3G280-AU11-C2 (EC Centrifugal Module - RadiPac, Backward-Curved Impeller, Single-Intake with Support Bracket)
  • Assembly: AGI P/N 10009777 "CABINET BLOWER AC POWER"
  • Motor: M3G084-GF (Electronically Commutated)
  • Origin: Made in Germany
  • Fan Size: 280 mm
  • Number of Blades: 7
  • Direction of Rotation: Clockwise (Viewed Toward Rotor)
  • Installation: Intended as Built-In Component; Shaft Horizontal or Rotor on Bottom (Rotor on Top Available on Request)
  • Condensation Drainage: Rotor-Side Holes
  • Operation Mode: S1 (Continuous)
  • Internal Code: 1532007E29
• Electrical:
  • Phase: 3~
  • Nominal Voltage: 400 VAC
  • Voltage Range: 380-480 VAC
  • Frequency: 50/60 Hz
  • Nominal Power: 1000 W (at 400 V, 3100 RPM)
  • Max Power: 1.0 kW
  • Current Draw: 1.6 A (Nominal), Max 1.8 A
  • Protection Class: I (Protective Earth Required)
  • Insulation Class: B
  • Touch Current: <= 3.5 mA (per IEC 60990)
  • Capacitor Discharge: 5 Minutes for Safe Voltage Levels After Power-Off
• Performance:
  • Speed: 3100 min⁻¹ (RPM)
  • Airflow: 2675 m³/h (at Optimum Efficiency Point); Up to 4000 m³/h (Max in Performance Curve)
  • Static Pressure Increase: 758 Pa (at Optimum Efficiency); Up to 1200 Pa (Max in Performance Curve)
  • Overall Efficiency (η es): 61.4% (Static)
  • Efficiency Grade: N 71.9 (Actual), Exceeds ErP 2015 Requirements
  • Sound Power Level: 71-93 dB(A) (Depending on Load)
  • Sound Pressure Level: 63-78 dB(A) (at 1 m from Fan Axis)
  • Measurement Standards: Air Performance per ISO 5801 (Category A); Sound per ISO 13347
  • Variable Speed Drive: Integrated (VSD)
  • Specific Ratio: 1.01
• Environmental/Protection:
  • Protection Rating: IP54 (Dust-Protected, Protected Against Splashing Water)
  • Humidity/Environmental Class: F3-1
  • Ambient Temperature (Operation): -25°C to +60°C
  • Ambient Temperature (Transport/Storage): -40°C to +80°C
  • Moisture Protection: Rotor and Impeller Basic-Insulated
• Controls and Interfaces:
  • Control Input: 0-10 VDC / PWM or 4-20 mA (for Speed/Output Control)
  • Outputs: 10 VDC (Max 10 mA), 20 VDC (Max 50 mA), 0-10 V (for Slave)
  • Inputs: 0-10 V or 4-20 mA (Sensor), External 24 V (Parameter Setting)
  • Communication: RS485 MODBUS-RTU
  • Alarm Relay: Floating Status Contact (NC/COM/NO, 2 A Max 250 VAC)
  • Features: Power Limiter, Motor Current Limitation, Soft Start, Thermal Overload Protection (Electronics/Motor), Line Undervoltage/Phase Failure Detection
  • Control Interface: SELV (Safely Disconnected from Mains)
• Materials and Physical:
  • Impeller: Sheet Aluminum
  • Rotor Surface: Painted Black
  • Electronics Housing: Die-Cast Aluminum
  • Support Plate: Sheet Steel, Galvanized
  • Support Bracket: Steel, Painted Black
  • Inlet Nozzle: Sheet Steel, Galvanized (with Pressure Tap, K-Factor 93)
  • Bearings: Ball Bearings
  • Weight: 11.7 kg (Fan Unit); 30 lbs 4 oz / ~13.7 kg (Including Cables and Plug)
  • Dimensions: Approximately 17" x 17" x 12" (Overall Assembly)
  • Inlet Ring Tightening Torque: 3.5 ± 0.5 Nm
• Power Cable (Primary Input):
  • Function: Power Supply
  • Length: ~19 ft (Including Plug)
  • Plug: Hubbell HBL2431 (Twist-Lock, 20A 3Ø 480 VAC)
  • Cable: Carol SOOW (Service, Oil/Weather Resistant)
  • Conductors: 4C 16 AWG (1.31 mm²)
  • Rating: 600 V, 90°C (UL Water Resistant, -40°C CSA)
  • Certifications: UL, CSA, FT-2, MSHA, RoHS
  • Internal Code: 0736151015
• Control Cable (Secondary Signal):
  • Function: Speed/Output Control (4-20 mA Standard)
  • Length: ~12 ft
  • Assembly: AGI P/N 10012490 "ENCLOSURE BLOWER 4-20 CONTROL"
  • Cable: Alpha Wire-NW P/N 2412C (Shielded)
  • Conductors: 2C 20 AWG
  • Temperature Rating: 75°C
  • Type: CMS or AWM 2092
  • Certifications: C(UL) CMG FT4, CE, RoHS
• Safety and Compliance:
  • Approvals: CE, CCC, cULus (UL 1004-7 + 60730), C22.2 No.77 + CAN/CSA-E60730-1, EAC
  • Standards: EN 61800-5-1
  • Safety Warnings: Automatic Restart After Power Failure if Control Signal Present; Use Fixed Guard Grille; Hearing Protection Recommended (>70 dB(A)); Cyclic Speed Loads Up to 1 Million Cycles
  • Maintenance: Inspect Every 6 Months for Damage, Clean Without Acids/Bases/Solvents or Sharp Tools