DC Axial Flow Fans MDS Series, MD Series
MD625B-24S
Fan
| Product Classification | Product Name | List Price | Shipping Date |
|---|---|---|---|
| Fan | MD625B-24S | - | Discontinued Product (31.3.2026 discontinued) |
Included
- Fan, Operating Manual
Specifications
Characteristics
Dimensions
Data Download
Other Specifications
General Specifications
| Item | Specifications | |
|---|---|---|
| Insulation Resistance | 10 MΩ or more when a 250 VDC megger is applied between the windings and the case after continuous operation under normal ambient temperature and humidity. However, the measurement value for MDS625, MDS825, MDS925, MDS1238, MDS1451,MDS1751, MDA1238, MDA1451, MDA1751, MDE625,MDE825, MDE925, MDE1238, MDE1451, and MDE1751 using a 500 VDC megger are 10 MΩ min. (Excluding MDS1751-24 (H)) |
|
| Dielectric Strength | No abnormality is observed even with an application of 500 VAC at 50 Hz between the windings and the case for 1 minute after continuous operation, at normal ambient temperature and humidity. |
|
| Temperature Rise | After continuous operation at normal ambient temperature and humidity, when temperature becomes constant, the measurement value on the outer case using the thermometer method is 10 °C max. However, the temperature for MDA1451 is 15°C max., and the temperature for MDS1751, MDA1751 is 5°C max. (Excluding MDS1751H, MDS1751FH) For MDS625, MDS825, MDS925, MDS1238, MDS1751H, MDS1751FH and MDA1238, the measured winding temperature rise is 40°C max. |
|
| Operating Voltage Range | ±15 % of rated voltage MDS410, MDS510, MDS625, MDS825, MDA1225: ±10 % (for each voltage) |
|
| Thermal Class | UL/CSA Standards: 105 (A), EN Standards: 120 (E) | |
| Burning Protection | Built-in burnout prevention circuit | |
| Operating Ambient Temperature | -10~+60 °C (-10~+70 °C for MDA1238) | |
| Operating Ambient Humidity | 85 % max. (Non-condensing) | |
| Color | Frame |
Black:
MDS410, MDS510, MDS625, MD625, MDS825, MD825, MDS925, MD925, MDS1238, MDA625, MDA825, MDA925, MDA1238
Dark Gray:
MDE1225, MDE1451
Unpainted (Aluminum):
MDS1225, MD1225, MDS1451, MDS1751, MDA1225, MDA1451, MDA1751, MDE625, MDE825, MDE925, MDE1238, MDE1751
|
| Blade | Black | |
| Materials | Frame |
Aluminum Die Cast:
MDS1225, MD1225, MDS1451, MDS1751, MDA1225, MDA1451, MDA1751, MDE625, MDE825, MDE925, MDE1225, MDE1238, MDE1451, MDE1751
Polycarbonate (Flammability Classification: V-0):
MDS410, MDS510, MD625, MD825, MD925, MDA625, MDA825, MDA925
ABS/PBT Alloy (Flammability Classification: V-0)
MDS625, MDS825, MDS925, MDS1238, MDA1238
|
| Blade |
Polycarbonate (Flammability Classification: V-0):
MD625, MD825, MD925, MDS1225, MD1225, MDS1451, MDS1751 (Excluding MDS1751H and MDS1751FH), MDA625, MDA825, MDA925, MDA1225, MDA1451, MDE1225, MDE1451
Polyphenylene oxide (Flammability Classification: V-0)
MDS925
Polyphenylene oxide (Flammability classification: V-1):
MDS625, MDS825, MDS1238, MDS1751H, MDS1751FH, MDA1238, MDE625, MDE825, MDE925, MDE1238, MDE1751
PBT (Flammability Classification: V-0):
MDS410, MDS510
|
|
Pulse Sensor Specifications
Outputs 2 pulse signals per fan revolution.
Sensor Specifications
| Output pulse | Outputs 2 cycles of pulses per fan revolution. |
|---|---|
| Output Mode | Open-collector output |
| Output Condition |
|
| Maximum Rating | Maximum Applied Voltage: 30 VDC max. Maximum Inflow Current Ic: MD625B-□S(H), MD825B-□S(H), MD925A-□S(H): 5 mA max. MDS1751-24S(H), MDV Series, MBD Series, MFD Series: 10 mA max. |
Sensor output circuit connection example
Standards
Regulations and Standards Materials
Documents about compliance with regulations and standards can be downloaded from the "Data Download" tab on the product details page.
(The types of files available for download vary by product.)
Explanations of the Global Laws, Regulations and Standards can be found here.
Information about our compliance with regulations and standards for each of our product series can be found here.
Hazardous Substances
The product does not contain any substances (10 substances) exceeding the regulation values of the RoHS Directive (2011/65/EU, 2015/863/EU).
For more information about compliance with regulations on chemical substances in Oriental Motor's Products, click here.
System Configuration

Related Products
Thermostat for Fan
| Products | Features | |
|---|---|---|
AM2-XA1
|
Features |
Automatically operates and stops fans in response to temperature changes in the equipment.
Note
|
Cables and Accessories