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Square black 40mm case fan with thermostat control

Fans

Fans CHA4012EB-MAH-O 40x40x20mm 12V .24A thermostat case fan

SKU CH-QGWY-P8JXN

A 40 mm square case fan with thermostat control runs on 12 V and draws 0.24 A

  • Compact 40 mm square frame fits tight chassis spaces
  • 12 V, 0.24 A draw keeps power demand low
  • 20 mm slim profile clears low-clearance components
  • Built-in thermostat adjusts speed to temperature

Compact 40 mm thermostat fan

The CHA4012EB-MAH-O is a 40 x 40 x 20 mm case fan that runs on 12 V and draws 0.24 A. Its built-in thermostat adjusts speed automatically, making it suited for small enclosures or power-supply replacements where space is tight.

Check your mounting and power

Verify the chassis has 40 mm mounting holes with 20 mm depth clearance. Confirm the power header supplies 12 V and can deliver at least 0.24 A. Ensure the connector type matches your board or adapter before ordering.

How it compares

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

Price $57.99
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

Does the CHA4012EB-MAH-O 40x40x20mm fan ship with mounting screws or a power adapter?

The product is supplied as the fan unit only; mounting hardware and any required power adapter must be purchased separately.

How do I choose between the thermostat and non-thermostat versions of this 12V .24A case fan?

Select the thermostat version when you need automatic speed control based on temperature; choose a non-thermostat model for constant full-speed operation.

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