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Black centrifugal case fan with forward-curved blades and steel housing, 48V 135W 2900rpm

Fans

Fans R3G280-AC66-30 48V 135W 2900rpm Centrifugal case fan

SKU CH-K42C-W8QFZ

Centrifugal case fan delivering 48 V DC power at 135 W and 2900 rpm for high-volume airflow up to 35000 m³/h

  • 48 V DC input with wide 36–57 V range for flexible power integration
  • 135 W power draw at 2.85 A for high-performance cooling capacity
  • 2900 rpm speed delivers strong airflow up to 35000 m³/h
  • Centrifugal design with external rotor motor ensures compact build and efficient motor cooling
  • Operates reliably from -25 °C to 60 °C for demanding environments

Centrifugal fan for 48 VDC systems

This centrifugal fan operates on a nominal 48 VDC supply with an input range of 36 to 57 VDC. It draws 2.85 A at 135 W and spins at 2900 rpm. The motor is an ebmpapst external-rotor design rated for ambient temperatures from -25 °C to 60 °C.

Suited for industrial chassis and telecom enclosures

This unit fits builders who need a high-airflow centrifugal blower that runs directly from a 48 VDC bus and accepts analog or serial speed control. It is not suited for standard ATX builds that only provide 12 VDC headers, nor for compact cases that cannot accommodate a centrifugal housing.

Nominal 48 VDC input with 36–57 VDC range

The single specification that decides fit is the voltage window: your system must deliver a steady 48 VDC source that stays within 36 to 57 VDC under load. If your chassis or power architecture cannot supply that range, this fan will not operate correctly.

Highlights

  • 48 V DC input with wide 36–57 V range for flexible power integration
  • 135 W power draw at 2.85 A for high-performance cooling capacity
  • 2900 rpm speed delivers strong airflow up to 35000 m³/h
  • Centrifugal design with external rotor motor ensures compact build and efficient motor cooling
  • Operates reliably from -25 °C to 60 °C for demanding environments

Specifications

No published specifications for this item yet.

Questions about this item

What does the 135 W power draw mean for my system's cooling capacity?

At full load the fan draws 135 W and moves air up to 35 000 m³/h, so the PSU must supply at least 2.85 A on the 48 V rail to sustain that airflow.

How does the 48 V DC input range of 36–57 V affect speed control?

The motor accepts 36 to 57 VDC and supports 100 % speed control via analog or serial interface, letting you tune airflow without leaving the voltage window.

What mounting provisions does the 280 mm centrifugal housing need?

The compact external-rotor design fits in a scroll housing with sturdy steel-plate construction; allow clearance for the 280 mm impeller diameter and the motor block inside the impeller.

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