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Grey metal axial blower with black impeller and mounting flange

Fans

Fans W2D250-GA04-09 400V Axial Flow Blower

SKU CH-4QVS-KDAXJ

400 V AC axial blower for Siemens inverter cooling, 2750–3050 rpm, 120–190 W, −25 °C to 75 °C operating range

  • TypeFan & Heatsinks
  • Operates at 400 V nominal voltage for industrial power systems
  • Draws only 0.27 A at low speed for energy-efficient cooling
  • Delivers up to 140 Pa back pressure to overcome duct resistance
  • Runs from -25 °C to 75 °C for harsh environment reliability
  • Designed as direct replacement for Siemens inverter cooling applications

Replacement Fan for Siemens Inverter

The W2D250-GA04-09 is a new original ebmpapst axial flow blower built as the large cooling fan for Siemens inverter units. It removes heat from high-power components such as the IGBT module to keep the drive operating within safe limits. Maintenance teams and service engineers use it as a direct drop-in spare for failed or ageing inverter fans.

400 VAC Nominal Voltage

This blower runs on a nominal 400 VAC supply with an operating range of 380 to 415 VAC. Speed varies between 2750 and 3050 rpm while power draw shifts from 120 to 190 W and current from 0.27 to 0.33 A depending on load. Maximum back pressure reaches 115 to 140 Pa, so the replacement must match these electrical and airflow ratings exactly.

Compact Direct Mount Installation

The fan fits the existing Siemens inverter housing using the original mounting points and wiring connections. No adapters or bracket modifications are required. Installers should verify the supply voltage sits within the 380 to 415 VAC range and confirm the ambient temperature stays between -25 °C and 60 °C, or up to 75 °C for short periods, to avoid premature bearing wear.

Highlights

  • Operates at 400 V nominal voltage for industrial power systems
  • Draws only 0.27 A at low speed for energy-efficient cooling
  • Delivers up to 140 Pa back pressure to overcome duct resistance
  • Runs from -25 °C to 75 °C for harsh environment reliability
  • Designed as direct replacement for Siemens inverter cooling applications

Specifications

TypeFan & Heatsinks

Questions about this item

What does the 400 VAC rating mean when the fan is installed in a Siemens inverter?

It matches the inverter’s three-phase supply so the motor runs directly from the drive’s internal bus without an extra transformer.

How does the 380–415 VAC operating window affect replacement planning?

The fan tolerates normal mains fluctuation across that range, so a single spare covers 400 V and 415 V sites.

What physical clearance does the W2D250-GA04-09 need inside the inverter cabinet?

The compact ebm-papst housing fits the existing mounting pattern used for the large bottom cooling fan in Siemens drives.

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