Technical Specifications

Key Features

Applications

• Industrial electrical control cabinet ventilation
• Industrial DC power supply equipment cooling
• Embedded computer and controller enclosure cooling
• Telecommunications and network equipment thermal management
• Electronic instrumentation forced-air ventilation
• Industrial machinery electrical compartment cooling
• Compatible 120 mm axial intake and exhaust cooling assemblies
• Replacement of matching SUNON MEC0251V3-000U-A99 DC axial fans

Purchase Information

We support online purchase of the SUNON MEC0251V3-000U-A99 fan. If you need to make bulk purchases and inquire about other products, please contact our team to inform us of your purchase requirements. We will provide you with information such as quantity quotations, delivery dates, and transportation methods.

Frequently Asked Questions

What is SUNON MEC0251V3-000U-A99?
MEC0251V3-000U-A99 is a SUNON MagLev MEC-series brushless DC axial cooling fan featuring a 120 x 120 x 25 mm housing, 12 VDC rated voltage and precision Vapo bearing system.

What is the rated voltage of MEC0251V3-000U-A99?
The manufacturer specifies 12 VDC, an operating voltage range of 6-13.8 VDC and a starting voltage of 6 VDC at 25°C. Select a DC supply suitable for the complete equipment's electrical requirements.

What are the dimensions of MEC0251V3-000U-A99?
The nominal dimensions are 120 x 120 x 25 mm. SUNON's mechanical drawing specifies a 120 ±0.5 mm square frame, 25 +0.5/-0 mm thickness and eight 4.3 ±0.3 mm mounting holes with 105 ±0.3 mm center spacing.

What is the rated current?
SUNON specifies 161 mA rated current and 185 mA maximum current for MEC0251V3-000U-A99. These electrical values are documented in manufacturer specification D12017100G-00.

What is the power consumption?
The exact manufacturer datasheet specifies 1.9 W rated input power and 2.22 W maximum power consumption. The similarly named MFC0251V3-000U-A99 model is rated at 1.68 W and should not be confused with this MEC-series fan.

What is the rated fan speed?
The manufacturer specifies 2200 RPM with a tolerance of ±10% at rated voltage. MEC0251V2-000U-A99 and MEC0251V1-000U-A99 are higher-speed versions with different electrical and airflow ratings.

What airflow does MEC0251V3-000U-A99 provide?
The published airflow rating is 75 CFM, approximately 127.4 m³/h. Actual installed airflow depends on the ventilation system's resistance and the fan's operating point on its airflow-versus-static-pressure curve.

What is the maximum static pressure?
SUNON specifies 0.16 inH2O, approximately 39.8 Pa. The manufacturer datasheet includes an airflow-versus-pressure performance curve for cooling-system evaluation.

What bearing system does MEC0251V3-000U-A99 use?
The fan uses SUNON's precision Vapo bearing system. The manufacturer reports a 70000-hour life expectancy reference at 40°C, 65% relative humidity and 90% confidence level under specified laboratory conditions. This is not an unconditional service-life guarantee.

What is the acoustical noise level?
The manufacturer specifies 34 dB(A). This value is based on free-air operation in a semi-anechoic chamber with a microphone positioned one meter from the fan intake. Installed noise can vary with mounting conditions and airflow restrictions.

How is MEC0251V3-000U-A99 electrically connected?
The manufacturer drawing specifies two UL 1007 24 AWG DC power leads: red positive and black negative. Lead length is 330 ±15 mm, with 5 ±0.3 mm stripped wire ends. The standard A99 version does not provide a separate tachometer or PWM control input. Automatic restart and polarity protection are included. SUNON advises against controlling the fan by PWM switching of the power or ground lead.

What should be checked before ordering MEC0251V3-000U-A99?
Confirm the complete SUNON model number, 12 VDC supply, 161 mA rated current, 1.9 W input power, 2200 RPM speed, 75 CFM airflow, 0.16 inH2O static pressure, Vapo bearing, 120 x 120 x 25 mm frame, 105 mm mounting-hole center spacing and two-wire connection. The higher-speed MEC0251V1 and MEC0251V2 variants have different power and performance ratings. MFC0251V3-000U-A99 belongs to a different series and has a different electrical rating, while MEC0252V3-000U-A99 is a 24 VDC model. Do not substitute these fans without verifying mechanical, electrical and cooling compatibility.