12 VDC Operation
Designed for compatible equipment using a nominal 12 VDC power supply. Check the actual voltage rating before installation.
NIDEC
Nidec W40S12BMA5-57 DC Axial Cooling Fan 12V 40x40x28mm 4-Wire
$13.86
Available
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NIDEC
Nidec W40S12BMA5-57 DC Axial Cooling Fan 12V 40x40x28mm 4-Wire
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$13.86
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PRODUCT DOCUMENTATION
Product Information
Technical specifications, features, applications and purchasing information.
Technical Specifications
| Brand | Nidec UltraFlo |
| Model Number | W40S12BMA5-57 |
| Product Category | DC Axial Cooling Fan |
| Fan Series | W40S Series |
| Rated Voltage | 12 VDC |
| Operating Voltage Range | Verify the exact -57 variant against the fan label or manufacturer documentation |
| Rated Current | Supplier listings differ between 0.12 A and 0.14 A; confirm the exact unit rating |
| Frame Dimensions | 40 x 40 x 28 mm |
Key Features
Compact 40 mm Frame
The 40 x 40 x 28 mm form factor is suitable for equipment designed around this specific fan size and thickness.
Four-Wire Connection
Supplier listings identify a four-wire connector. Verify the connector shape, wire assignment and control signals against the installed fan.
Axial Airflow Design
The axial fan configuration moves air through equipment ventilation paths to support cooling of compatible electronic components.
W40S Series Construction
The Nidec UltraFlo W40S series includes compact cooling fans for applications requiring a small footprint and directed airflow.
Model-Specific Replacement
Using the complete W40S12BMA5-57 model number helps distinguish this fan from similar W40S variants with different electrical and control characteristics.
Applications
- Server chassis cooling
- Network appliance ventilation
- Compact computer equipment cooling
- Industrial electronic enclosure airflow
- Embedded system thermal management
- Small-form-factor equipment cooling
- Electronic component ventilation
- Replacement fan maintenance and repair
Purchase Information
We support purchase inquiries for the Nidec UltraFlo W40S12BMA5-57 DC Axial Cooling Fan. For bulk orders or related cooling components, contact our team with your required quantity and equipment application. Before ordering, verify the full model number, 12 VDC rating, 40 x 40 x 28 mm dimensions, connector configuration and current rating. Because supplier listings report different current values for this model, use the actual fan label or applicable manufacturer documentation to confirm electrical compatibility.
Frequently Asked Questions
What is Nidec W40S12BMA5-57?
It is a Nidec UltraFlo W40S series DC axial cooling fan identified by the complete model number W40S12BMA5-57.
What voltage does W40S12BMA5-57 use?
Supplier listings identify a nominal rated voltage of 12 VDC. Confirm the rating on the actual fan before connecting it.
What are the dimensions of this fan?
Product listings identify a 40 x 40 x 28 mm frame.
What is the rated current?
Available supplier listings are inconsistent, reporting 0.12 A or 0.14 A. Verify the exact model label or manufacturer specification rather than relying on an assumed value.
How many wires does the fan use?
Supplier listings identify a four-wire connection. Confirm the connector and pinout before installation.
What type of fan is this?
The W40S12BMA5-57 is listed as a DC vane axial cooling fan.
What bearing type is used?
Nidec's W40S series documentation describes permanently lubricated dual ball bearings for the series. Confirm the specification applicable to the exact -57 variant if bearing details are critical.
Can this fan be used in a server or network appliance?
It can be considered for compatible compact equipment. Check the mounting arrangement, voltage, current, airflow direction and connector signals against the target system.
Can it replace another 40 mm fan?
Not automatically. Verify the 28 mm thickness, voltage, current, mounting holes, connector, airflow and any speed-control or monitoring requirements.
What should be checked before ordering?
Confirm model W40S12BMA5-57, 12 VDC operation, 40 x 40 x 28 mm dimensions, four-wire connector, actual current rating and compatibility with the equipment's fan control interface.
Need help confirming a model?
Send us your part number and technical requirements.
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