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Black 120mm square case fan with transparent blades and visible motor hub

CAFELE

CAFELE RDH1225S 12V 120mm 0.40A case fan

SKU CH-T529-78DRB MPN RDH1225S

12V 120mm case fan measuring 120x120x25mm draws 0.40A for chassis cooling

  • TypeCase Fan
  • 120 mm frame fits standard case mounts
  • 12 V DC power matches common PSU outputs
  • 40 A draw keeps cable load low
  • 25 mm thickness suits tight clearance builds
  • Pre-tested units ship ready to install

120 mm 12 V chassis fan

The CAFELE RDH1225S is a 120 mm square frame fan that runs on a 12 V DC supply and draws 0.40 A. It fits standard 120 mm mounting holes in PC cases and similar enclosures. Builders needing a direct replacement for a worn or noisy 120 mm unit will find the electrical match straightforward.

Practical limits of the 12 V DC interface

The fan requires a 12 V source capable of delivering at least 0.40 A; a weaker rail will not spin the motor reliably. Speed is fixed by the applied voltage, so there is no PWM or voltage regulation built into the unit. Systems that rely on motherboard fan headers for automatic speed curves must supply a constant 12 V or accept full-speed operation.

Build quality and daily implications

The frame measures 120x120x25 mm and uses a conventional four-corner screw pattern compatible with typical case mounts. All units are tested before shipment, reducing the chance of a dead-on-arrival motor. The 25 mm thickness clears most standard chassis cutouts, but very slim enclosures may not accommodate the full depth.

Highlights

  • 120 mm frame fits standard case mounts
  • 12 V DC power matches common PSU outputs
  • 40 A draw keeps cable load low
  • 25 mm thickness suits tight clearance builds
  • Pre-tested units ship ready to install

Specifications

TypeCase Fan

Questions about this item

Which version of the CAFELE RDH1225S should I pick for a 120mm fan slot?

The RDH1225S is a single 120x120x25mm model running at 12V 0.40A, so it fits any standard 120mm mounting point without needing a different variant.

What does the 0.40A current draw mean once the fan is installed in my chassis?

At 12V the fan pulls 0.40A, which is a modest power level that most motherboard headers or fan controllers can supply without issue.

What interface does the RDH1225S use and what does it limit in practice?

It connects via a standard DC 12V two-pin or three-pin header, so speed is controlled by voltage and the header’s current rating caps the maximum draw.

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