new MINGQUAN MQ12038HBL DC24V 0.35A 12CM 2-Wire Axial Cooling Fan

Mingquan · Axial Fan · MQ12038HBL · DC 24V Cabinet Ventilation

What Is the Mingquan MQ12038HBL Axial Cooling Fan?

The Mingquan MQ12038HBL is a DC 24V 120x120x38mm 2-wire axial fan drawing 0.35A for forced-air cooling of electrical enclosures and equipment racks. This 12cm fan is a workhorse of industrial thermal management — the 120mm format and 38mm depth move substantial air at moderate noise levels for control cabinet ventilation, power supply cooling, and equipment exhaust applications.

In short: A standard 120x38mm DC 24V industrial cooling fan from Mingquan — provides reliable forced-air ventilation for electrical cabinets and automation equipment with economical power consumption at 0.35A.

Key Features

1. Industry-Standard 120x38mm Format

What it means: The most common industrial fan size with standardized 105mm hole spacing for drop-in replacement.
Why it matters: Replaces failed fans in countless equipment models without drilling, adapting, or modifying the enclosure.
Result: Quick field replacement with minimal downtime — remove four screws, swap the fan, reconnect two wires.

2. 24VDC Operation from Control Power

What it means: Powers directly from the 24V DC bus that already exists in most industrial control panels.
Why it matters: No separate AC circuit, additional power supply, or voltage conversion needed — wire to the nearest 24V terminal block.
Result: Clean integration into existing cabinet power architecture without adding components.

3. 0.35A Balanced Power

What it means: Approximately 8.4 watts — enough for meaningful airflow without excessive heat contribution.
Why it matters: In a sealed cabinet, fan power becomes heat that must also be exhausted — the lowest power that meets airflow needs is optimal.
Result: Good airflow-to-power ratio for continuous 24/7 industrial operation.

Key Specifications

Typical Applications

• PLC Panel Ventilation: Exhausting warm air from the top of control cabinets housing programmable logic controllers and associated modules.
• Power Supply Cooling: Providing forced-air flow across DIN-rail power supplies and DC-DC converters in automation panels.
• Server Rack Ventilation: Supplementing airflow in 19-inch equipment racks deployed on factory floors for SCADA and MES servers.
• Motor Drive Cabinets: Removing heat generated by variable frequency drives and soft starters in motor control centers.

Frequently Asked Questions

"How do I determine if the airflow direction is correct?"

The fan frame has molded arrow indicators showing blade rotation and airflow direction. As a general rule, air exits toward the label side of the fan. For cabinet ventilation, mount the fan at the top exhausting outward (removes hot air) and provide filtered intake openings at the bottom (draws in cool air). This creates a chimney-effect airflow pattern driven by both the fan and natural convection.

"What maintenance does this fan require?"

Industrial fans in dusty environments should be inspected every 3-6 months. Clean accumulated dust from blades and grilles with compressed air (hold the blade stationary to prevent overspeed bearing damage). Check for increased bearing noise, vibration, or reduced airflow — these indicate impending bearing failure. Replace the fan proactively if bearing noise becomes audible.

"Can I use a speed controller to reduce noise during low-load periods?"

Yes. Reducing the DC supply voltage linearly reduces fan speed. A variable DC supply or simple PWM controller on the 24V line allows adjusting speed. Minimum reliable start voltage is typically around 14-16V for a 24V fan. Below this, the fan may not start reliably from standstill. For automated thermal control, consider a thermostat-controlled fan speed module.

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