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Small black square 4020 case fan with three wires

Fans

Fans 4020 12V 0.08A 1608KL-04W-B29 case fan

SKU CH-XRKJ-J3X70

Compact 40 mm square frame spins at 12 V with a low 0.08 A draw and three-wire speed monitoring

  • 12 V DC operation keeps power draw low at 0.08 A
  • 40 mm square frame fits tight chassis spaces
  • Three-wire connector enables speed monitoring
  • NMB motor design built for continuous inverter cooling

NMB 4020 12V inverter cooling fan

This NMB 4020 model is a 12 V inverter cooling fan rated at 0.08 A. It uses a three-line connection for power and signal. The unit is intended for equipment cooling where a compact axial fan is required.

Capacity and headroom for tight spaces

The fan draws 0.08 A at 12 V, providing airflow for small enclosures and inverter modules. It suits low-power cooling tasks but lacks the airflow for high-heat components or large chassis. Builders needing higher static pressure or greater volumetric flow should consider larger frame sizes.

How it compares

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

Price $12.99
Cheaper than about 80% 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

Will the 4020 12 V fan run on the same 12 V header as my older case fans?

Yes, the fan is rated for 12 V and draws 0.08 A, so it shares the same voltage rail as standard 12 V case fans.

How can I confirm the 1608KL-04W-B29 is spinning correctly after installation?

Check the motherboard fan-speed readout or BIOS hardware monitor; it should report an RPM value once the 3-wire connector is seated.

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