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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.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $300.99
Pricier than about 90% of the 8,339 comparable items (median $19.99).

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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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