W4D400-CP12-31 ebmpapst 230/400V 135W 400mm AC Axial Fan

Description

The ebmpapst W4D400-CP12-31 is a high-performance 230/400 V industrial AC axial fan with an impeller size of 400 mm, purpose-built to deliver elite-level thermal cooling in high-resistance airflow paths. This unit features a heavy-duty M4D074-EI external rotor motor capable of sustaining a 135 W power input (at 50 Hz) or 185 W (at 60 Hz) to drive its specialized 5-blade black-painted sheet steel impeller at speeds of 1450 RPM or 1690 RPM respectively. Engineered specifically for air displacement in large-scale cooling systems, it utilizes a 400 mm diameter housing to provide balanced pressure and airflow for mission-critical hardware. The mechanical design relies on precision maintenance-free ball bearings and a pre-galvanized sheet steel frame coated with black plastic (RAL 9005) to ensure reliable continuous operation across an ambient temperature range of -25 °C to 40 °C. Featuring a versatile 3-phase electrical interface supporting Delta (230 VAC) or Star (400 VAC) wiring, this fan is a critical component for condenser cooling, industrial ventilation, and power electronics thermal management where long-term durability and high aerodynamic efficiency are mandatory.

W4D400-CP12-31 Fan Parameters
Manufacturer: ebmpapst
Model Number: W4D400-CP12-31
Motor Model: M4D074-EI
Series: AC Axial Series
Fan Size: 400 mm
Type: AC Axial Fan
Bearing Type: Ball Bearing
Nominal Voltage: 230 VAC (Delta) / 400 VAC (Star)
Voltage Range: 220 – 480 VAC
Frequency: 50/60 Hz
Weight: 7980 g

[Electrical Data]
Input Power: 135 W (50 Hz) / 185 W (60 Hz)
Nominal Current (400V): 0.44 A (50 Hz) / 0.39 A (60 Hz)
Nominal Current (230V): 0.76 A (50 Hz) / 0.68 A (68 Hz)
Starting Current: 1.7 A (at 400V) / 3.0 A (at 230V)
Nominal Speed: 1450 RPM (50 Hz) / 1690 RPM (60 Hz)
Motor Design: AC External Rotor Motor (3-Phase)
Wiring: Δ (Delta) for 230V / Y (Star) for 400V
Motor Protection: Locked-rotor protection (Customer must install overheating protection)
Insulation Class: Class B
Touch Current: < 0.75 mA
Termination: Variable cable connection

[Performance & Acoustics]
Max. Air Flow: 2265.9 CFM (3850 m³/h / 64.17 m³/min)
Max. Static Pressure: 12.24 mmH₂O (120.0 Pa / 0.48 inH₂O)
Efficiency Grade: N 43.6 (Overall efficiency ηes 32.7%)
Number of Blades: 5
Direction of Rotation: Clockwise (Viewed toward rotor)
Airflow Direction: "A"
Mode of Operation: S1 (Continuous operation)

[Materials & Construction]
Fan Housing Material: Sheet steel, pre-galvanized, black plastic coated (RAL 9005)
Blade Material: Sheet steel, painted black
Guard Grille Material: Steel, black plastic coated (RAL 9005)
Rotor Surface: Painted black
Installation Position: Shaft horizontal or rotor on bottom
Condensation Drainage: Rotor side holes
Degree of Protection: IP44

[Reliability & Safety Standards]
Min. Ambient Temperature: -25 °C
Max. Ambient Temperature: 40 °C
Storage Temperature: -40 °C – 80 °C
Standard Compliance: EN 60335-1, CE
Approval Agency: CCC

Application
The ebmpapst W4D400-CP12-31 axial fan is used in commercial refrigeration units, industrial heat exchangers, agricultural ventilation systems, large power transformer cooling, and factory climate control modules.