---
product_id: 487226068
title: "DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM"
brand: "nnl"
price: "€ 24.35"
currency: EUR
in_stock: true
category: "Nnl"
url: https://www.desertcart.hr/products/487226068-dbtb0428b2g-40mm-powerful-cooling-fan-for-avc-4028-12v-1a
store_origin: HR
region: Croatia
---

# 19.4 CFM airflow Dual ball bearing durability 18000 RPM max speed DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM

**Brand:** nnl
**Price:** € 24.35
**Availability:** ✅ In Stock

## Summary

> 💨 Cool like a pro, roar like a turbine — don’t let your gear overheat!

## Quick Answers

- **What is this?** DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM by nnl
- **How much does it cost?** € 24.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/487226068-dbtb0428b2g-40mm-powerful-cooling-fan-for-avc-4028-12v-1a)

## Best For

- nnl enthusiasts

## Why This Product

- Trusted nnl brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart PWM Control:** Adaptive speed modulation for efficient, temperature-driven cooling.
- • **Compact Yet Mighty:** 40x40x28mm size packs a punch with positive pressure design and built-in ducting.
- • **Turbocharged Cooling Power:** Unleash 18,000 RPM for relentless airflow that keeps your tech ice-cold.
- • **Precision Dual Ball Bearings:** Engineered for longevity and whisper-quiet operation under heavy loads.
- • **Pro-Grade Server Compatibility:** 4-pin PWM interface ensures seamless integration with high-performance systems.

## Overview

The NNL DBTB0428B2G is a high-speed 40mm server cooling fan featuring a robust 12V 1A motor capable of spinning up to 18,000 RPM. Its dual ball bearing design ensures durability and stable performance, while the 4-wire PWM interface enables intelligent temperature-based speed control. Delivering 19.4 CFM airflow in a compact 40x40x28mm frame, this fan excels in demanding cooling scenarios, making it ideal for high-power electronics and server environments where efficient heat dissipation is critical.

## Description

Bearing: high precision double ball bearing Model: DBTB0428B2G Dimensions: 40 x 40 x 28mm side length 4cm thickness 2.8cm Rated voltage: 12V Current: 1.0A high speed violent large air volume fan Interface: 4 wires (25cm) Speed: 18000 RPM full speed Air volume: 19.4cfm Additional functions: PWM intelligent temperature control and speed measu

## Features

- Model: DBTB0428B2G
- Bearing: high precision double ball bearing
- Current: 1.0A high speed violent large air volume fan
- Dimensions: 40 x 40 x 28mm side length 4cm thickness 2.8cm
- Additional functions: PWM intelligent temperature control and speed measu

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B7814RQD |
| Air Flow Capacity | 19.4 Cubic Feet Per Minute |
| Best Sellers Rank | #62,635 in Computers ( See Top 100 in Computers ) #521 in Computer Case Fans |
| Brand Name | NNL |
| Compatible Devices | Server |
| Cooling Method | Air |
| Customer Reviews | 4.4 4.4 out of 5 stars (42) |
| Item Dimensions L x W x H | 28L x 40W x 40H millimeters |
| Item Weight | 100 Grams |
| Manufacturer | NNL |
| Material Type | wire |
| Maximum Rotational Speed | 18000 RPM |
| Model | NNL-128 |
| Noise Level | 25 Decibels |
| Number of Items | 1 |
| Part Number | NNL-128 |
| Power Connector Type | 4-Pin |
| UPC | 768481474184 |
| Unit Count | 1.0 Count |
| Voltage | 12 Volts |
| Wattage | 3 watts |

## Product Details

- **Brand:** NNL
- **Power connector type:** 4-Pin
- **Product dimensions:** 28L x 40W x 40H millimeters
- **Voltage:** 12 Volts
- **Wattage:** 3 watts

## Images

![DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM - Image 1](https://m.media-amazon.com/images/I/51hIm0EgP+L.jpg)

## Frequently Bought Together

- NNL DBTB0428B2G 40mm Powerful Cooling Fan for AVC 4028 12V 1A High Speed Server Fans 40 * 40 * 28mm Dual Ball Bearing 4-Wire 4Pin PWM
- ARCTIC S4028-15K - 40x40x28 mm Server Fan, 1400–15000 RPM, PWM Regulated, 4-pin Connector, 12 V DC, Rack Cooling Fan - Black
- DB04028B12U 40mm Fan 4cm 4028 40x40x28mm 12V 0.66A Dual Ball Bearing 4-Wire 4pin PWM Server Power Airflow Coo

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-06-20*