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Black square 80mm case fan 38mm deep with four wires

Fans

Fans 3115RL-05W-B66Size 80x80x38mm 24V .50A 4-wire case fan

SKU CH-49K1-KQZZ4 MPN 3115RL-05W-B66Size

A 24 V, 0.50 A axial fan measuring 80 by 80 by 38 mm with a 4-wire PWM connection and double ball bearings for server or industrial chassis cooling

  • Reliable long-life operation from high-precision double ball bearing
  • 24 V DC power suits industrial and server equipment
  • 50 A draw keeps energy use low
  • 4-wire PWM control enables precise speed regulation
  • Compact 80 × 80 × 38 mm frame fits tight chassis

80 mm 24 V case fan

The 3115RL-05W-B66Size is an 80 by 80 by 38 mm axial fan designed for equipment that requires a 24 V DC supply. It draws 0.50 A through a four-wire connection and fits standard 80 mm mounting holes. The unit is brand new and sourced from the original Japan Mebia NMB-MAT production line.

Double ball bearing thermals

A high-precision double ball bearing supports the rotor for consistent airflow and long service intervals. The bearing design reduces friction-related noise while maintaining stable rotation under continuous 24 V operation. Power draw remains at the rated 0.50 A during normal use.

Four-wire mounting implications

The four-wire harness provides both power and speed-control signals for integration with fan headers or external controllers. Standard 80 mm screw spacing allows direct replacement in existing chassis or equipment panels. The 38 mm depth suits compact enclosures where thinner fans cannot be fitted.

How it compares

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

Price $28.99
Pricier than about 72% 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

How do I install the 3115RL-05W-B66Size 80x80x38mm fan and which 4-wire lead is the PWM control?

Mount the 80 mm square frame with four screws, connect the black wire to ground, red to 24 V, yellow to the tachometer header, and the blue wire to the PWM control header on your board.

What maintenance will the double ball bearing in this 24 V 0.50 A fan need later?

The high-precision double ball bearing is sealed for life; no re-lubrication is required, but clean dust from the blades and frame periodically to maintain airflow.

At what point does the 0.50 A current limit become the bottleneck during sustained 24 V operation?

The fan draws a steady 0.50 A at 24 VDC; if your supply or header cannot maintain that current continuously, voltage will sag and speed will drop first.

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