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Small black square cooling fan with three wires visible

TSUJ

TSUJ 4CM KD1204PKBX 12V 40mm 1.5W 3Wire Fan 40x40x20mm

SKU CH-19MT-472NE

A 12 V, 1.5 W three-wire cooling fan measuring 40 mm square by 20 mm thick

  • Key features4CM KD1204PKBX (2).F.GN 12 V 40 mm 1.5 W 3Wire Cooling Fan 4
  • Compact 40 mm frame fits tight spaces
  • 12 V DC operation suits standard power rails
  • Low 1.5 W draw reduces energy use
  • Three-wire connector enables speed monitoring
  • 20 mm depth keeps profile slim

Compact 12 V 40 mm cooling fan

The TSUJ 4CM KD1204PKBX is a 12 V DC axial fan measuring 40 by 40 by 20 mm. It draws 1.5 W and uses a three-wire connection for speed monitoring. The unit suits tight enclosures such as small-form-factor PCs, network appliances or embedded boards that need directed airflow.

Check voltage header and wire length

Verify that your board or controller provides a 12 V fan header with three pins for tachometer feedback. Confirm the lead length and connector style shown in the photos match your harness before ordering. Ensure the mounting holes align with the 40 mm square footprint of your chassis.

Steady low-power airflow under load

At a constant 12 V supply the fan maintains its rated 1.5 W draw without thermal throttling. The three-wire interface lets the system monitor RPM continuously during prolonged operation. Expect consistent airflow as long as the input voltage remains stable and the bearings stay clean.

How it compares

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

Price $11.99
Cheaper than about 80% of the 302 comparable items (median $31.99).

Specifications

Product
Brand nameTSUJ
Part numberKepler-C72J-OYS-0077

Questions about this item

Does the TSUJ KD1204PKBX fan ship with mounting screws or a power adapter?

The listing shows only the 40 mm fan with its attached 3-wire lead; screws, adapters or extra cables are not included and must be sourced separately.

How do I decide between the KD1204PKBX and another 40 mm 12 V model?

Match the 40x40x20 mm frame, 1.5 W draw and three-wire tachometer connector to your device’s mounting holes and header; if those dimensions and power rating fit, this unit is the correct choice.

What does the 1.5 W rating mean for airflow inside my chassis?

At 12 V the fan draws 1.5 W, giving a low-power cooling profile suited to tight 40 mm spaces such as small-form-factor PCs or appliance vents.

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