Technical specifications, features, applications and purchasing information.
| Brand | NMB-MAT |
| Model Number | 4715MS-12T-B50 |
| Product Category | AC Axial Fan |
| Manufacturer | NMB Technologies Corporation / MinebeaMitsumi |
| Product Series | 4715MS |
| Manufacturer-Documented Complete Model | 4715MS-12T-B50-A00 |
| Manufacturer Frequency-Specific Models | 4715MS-12T-B50-A00_50Hz and 4715MS-12T-B50-A00_60Hz |
| Product Type | AC Tubeaxial Cooling Fan |
| Electrical Supply Type | Single-Phase Alternating Current |
| Nominal Voltage | 115 VAC |
| Rated Frequency | 50 / 60 Hz |
| Starting Voltage | 65 VAC |
| Frame Dimensions (W × H × D) | 119 × 119 × 38 mm |
| Frame Width | 119 mm |
| Frame Height | 119 mm |
| Frame Depth | 38 mm |
| Common Fan Size Class | 120 × 120 × 38 mm Class; Actual Manufacturer Dimensions Are 119 × 119 × 38 mm |
| Rated Current at 50Hz | 0.250 A |
| Rated Current at 60Hz | 0.210 A |
| Input Power at 50Hz | 15.5 W |
| Input Power at 60Hz | 14.5 W |
| Input Power Tolerance | +10% / -20% According to NMB Documentation |
| Nominal Fan Speed at 50Hz | 2600 RPM |
| Nominal Fan Speed at 60Hz | 2900 RPM |
| Maximum Airflow at 50Hz | 89.3 CFM |
| Maximum Airflow at 60Hz | 103.6 CFM |
| Maximum Airflow at 50Hz in Metric Units | 2.50 m³/min |
| Maximum Airflow at 60Hz in Metric Units | 2.90 m³/min |
| Historical Airflow Figure at 50Hz | 88.2 CFM in an Older NMB Series Datasheet; Current Manufacturer Product Page Lists 89.3 CFM |
| Historical Airflow Figure at 60Hz | 102.0 CFM in an Older NMB Series Datasheet and Distributor Records; Current Manufacturer Product Page Lists 103.6 CFM |
| Airflow Data Note | The Manufacturer's Current Product Pages and Older Catalog Express the Same 2.50 / 2.90 m³/min Values with Slightly Different CFM Figures; Current Product-Page Values Are Used Here |
| Maximum Static Pressure at 50Hz | 64.7 Pa |
| Maximum Static Pressure at 60Hz | 76.4 Pa |
| Maximum Static Pressure at 50Hz in Inches of Water | 0.26 in H₂O |
| Maximum Static Pressure at 60Hz in Inches of Water | 0.31 in H₂O |
| Noise Level at 50Hz | 37 dB |
| Noise Level at 60Hz | 41 dB |
| Motor Structure | Shaded-Pole Induction Motor |
| Motor Protection | Impedance Protection |
| Bearing Type | Ball Bearing |
| Manufacturer-Listed Life Expectancy | 100,000 Hours L10 at 25°C |
| Life Rating Interpretation | L10 Is a Statistical Life Reference Corresponding to 10% Failure Under the Defined Test Conditions; Not a Guaranteed Individual Service Life |
| Legacy Distributor Life Reference | 50,000 Hours at 25°C in DigiKey Historical Product Attributes; Different from the Manufacturer's Current L10 Reference |
| Approximate Mass | 550 g in NMB Manufacturer Documentation |
The NMB-MAT 4715MS-12T-B50 is an AC axial cooling fan from the 4715MS product family. The manufacturer-documented full model, 4715MS-12T-B50-A00, operates from a nominal 115 VAC supply at either 50Hz or 60Hz. It is intended for forced-air ventilation in compatible industrial control equipment, electronic power supplies and machinery enclosures.
The fan features a 119 mm square housing and a 38 mm frame depth. Its black-painted aluminum casing and UL94V-0 plastic impeller are documented in NMB's series datasheet. The flange-type mounting arrangement includes a nominal 105 mm mounting-hole spacing, supporting installation in equipment designed for this mechanical format.
NMB specifies 0.250 A, 15.5 W and 2600 RPM at 50Hz, compared with 0.210 A, 14.5 W and 2900 RPM at 60Hz. These ratings demonstrate why the correct operating frequency is important when calculating electrical loading, evaluating fan operation and selecting replacements for equipment used in different power systems.
Current NMB product pages list a maximum airflow of 89.3 CFM at 50Hz and 103.6 CFM at 60Hz. Maximum static pressure is 64.7 Pa and 76.4 Pa, respectively. An older series catalog gives slightly different CFM conversions for the same 2.50 and 2.90 m³/min values. Actual installed airflow depends on the equipment's airflow resistance.
The 4715MS-12T-B50-A00 uses a shaded-pole induction motor with impedance protection and ball bearing construction. The manufacturer lists a 100,000-hour L10 expected life at 25°C and an operating temperature range of -10°C to +70°C. The published expected-life figure is a statistical reliability reference rather than a guaranteed service duration.
NMB identifies 11938MB-A1N-EA-00 as the updated part number for 4715MS-12T-B50-A00. Both 50Hz and 60Hz current manufacturer product records specify the same electrical and airflow performance for the newer designation. Replacement selection should still confirm the complete model, terminal arrangement, mounting dimensions, grounding provisions and equipment requirements.
We support online purchase inquiries for the NMB-MAT 4715MS-12T-B50 AC Axial Fan. For individual units, bulk requirements or related industrial cooling products, please contact our team with the required quantity, complete model number and equipment specifications. The documented standard configuration is 4715MS-12T-B50-A00, rated for nominal 115 VAC at 50Hz and 60Hz. We can provide quotation information and discuss applicable delivery and transportation arrangements after reviewing your request. NMB identifies 11938MB-A1N-EA-00 as the newer part number. Before ordering or installing a replacement, confirm the electrical supply, operating frequency, full model suffix, two-terminal or equipment-specific lead-wire connection, protective grounding provision, 119 × 119 × 38 mm dimensions and required cooling performance. AC electrical installation should be performed by appropriately qualified personnel using applicable safety procedures.
What is NMB-MAT 4715MS-12T-B50?
NMB-MAT 4715MS-12T-B50 is an AC axial cooling fan from NMB Technologies. The manufacturer's documented complete model is 4715MS-12T-B50-A00. It operates at a nominal 115 VAC with 50Hz and 60Hz ratings and has a 119 × 119 × 38 mm frame, ball bearings and a shaded-pole induction motor.
Is 4715MS-12T-B50 an AC fan or a DC fan?
It is an AC axial cooling fan. The documented model uses a nominal 115 VAC alternating-current supply. It must not be connected directly to 12 VDC, 24 VDC or 48 VDC fan circuits. Similar physical dimensions do not establish compatibility with DC axial fans.
What are the voltage and frequency specifications?
NMB specifies 115 VAC nominal voltage with separate 50Hz and 60Hz operating characteristics. The published starting voltage is 65 VAC at both frequencies. This starting-voltage specification does not establish 65 VAC as the recommended continuous operating voltage; use the manufacturer's nominal supply rating.
What are the dimensions and mounting-hole specifications?
The fan is nominally 119 mm wide, 119 mm high and 38 mm deep. NMB's mechanical drawing specifies 119.0 ±0.5 mm frame dimensions, 38.0 ±0.5 mm depth, 105.0 ±0.3 mm mounting-hole center spacing and 4.3 mm mounting holes. Confirm equipment clearance and mounting details before replacement.
What is the rated current at 50Hz and 60Hz?
The manufacturer specifies 0.250 A at 50Hz and 0.210 A at 60Hz. The difference is associated with the operating characteristics of the AC induction motor at each supply frequency. Use the appropriate value when evaluating equipment fan circuits and electrical loading.
What is the input power of 4715MS-12T-B50?
NMB lists 15.5 W at 50Hz and 14.5 W at 60Hz, with a published power tolerance of +10% / -20%. These are manufacturer-specified real input-power ratings. Multiplying AC voltage by RMS current does not necessarily give the same wattage because the motor's power factor affects real power consumption.
What is the fan speed at 50Hz and 60Hz?
The documented fan speed is 2600 RPM at 50Hz and 2900 RPM at 60Hz. Both are specified by NMB for the complete 4715MS-12T-B50-A00. The appropriate frequency-specific speed should be used when comparing cooling performance and replacement options.
What are the maximum airflow and static pressure ratings?
The manufacturer's current product pages specify 89.3 CFM maximum airflow and 64.7 Pa maximum static pressure at 50Hz. At 60Hz, they specify 103.6 CFM and 76.4 Pa. Maximum free-air flow and maximum static pressure occur at different operating points and are not simultaneously achieved. Actual airflow depends on equipment airflow resistance.
Why do some distributors list 102CFM instead of 103.6CFM?
Older NMB series documents and distributor product records list 102.0 CFM at 60Hz, while the manufacturer's current product page lists 103.6 CFM. Both sources provide approximately 2.90 m³/min as the corresponding metric airflow. A similar difference appears at 50Hz, with historical documents showing 88.2 CFM and the current product page showing 89.3 CFM. For this product description, the current manufacturer webpage values are used.
What are the motor type, bearing type and expected service life?
The documented fan uses a shaded-pole induction motor with impedance protection and ball bearings. NMB lists an L10 life reference of 100,000 hours at 25°C and an operating temperature range of -10°C to +70°C. The L10 figure describes a statistical life criterion under defined conditions and does not guarantee that every installed fan will operate for that duration.
Does 4715MS-12T-B50 have terminals or lead wires?
NMB's series documentation specifies Faston #110 or equivalent terminals and identifies separate lead-wire configurations using UL3266 AWG22 wire. DigiKey describes the standard 4715MS-12T-B50-A00 as a two-terminal fan, while some distributors refer to two-wire versions. Check the complete assembly and existing equipment harness before ordering. The standard two-terminal configuration does not provide separate tachometer, locked-rotor or PWM control connections.
Is 4715MS-12T-B50 discontinued, and what is the replacement?
NMB identifies 4715MS-12T-B50-A00 as a legacy part number not recommended for new designs, and major distributors list it as obsolete. The manufacturer identifies 11938MB-A1N-EA-00 as its newer designation, with corresponding 50Hz and 60Hz specifications. Before ordering, confirm the full -A00 suffix, nominal 115 VAC voltage, 50/60Hz frequency, 119 × 119 × 38 mm frame, 105 mm mounting-hole spacing, two-terminal connection, protective grounding provision, counterclockwise rotation viewed from the label side and airflow outlet toward the label side. The related 4715MS-12T-B5A-A00 has a different replacement designation, while 4715MS-20T-B50 and 4715MS-23T-B50 belong to different voltage configurations and should not be assumed electrically interchangeable.
Send us your part number and technical requirements.
Explore more industrial components from our catalog.
Available in stock (400)
| Brand | NMB-MAT |
| Model Number | 4715MS-12T-B50 |
| Product Category | AC Axial Fan |
| Manufacturer | NMB Technologies Corporation / MinebeaMitsumi |
| Product Series | 4715MS |
| Manufacturer-Documented Complete Model | 4715MS-12T-B50-A00 |
| Manufacturer Frequency-Specific Models | 4715MS-12T-B50-A00_50Hz and 4715MS-12T-B50-A00_60Hz |
| Product Type | AC Tubeaxial Cooling Fan |
| Electrical Supply Type | Single-Phase Alternating Current |
| Nominal Voltage | 115 VAC |
| Rated Frequency | 50 / 60 Hz |
| Starting Voltage | 65 VAC |
| Frame Dimensions (W × H × D) | 119 × 119 × 38 mm |
| Frame Width | 119 mm |
| Frame Height | 119 mm |
| Frame Depth | 38 mm |
| Common Fan Size Class | 120 × 120 × 38 mm Class; Actual Manufacturer Dimensions Are 119 × 119 × 38 mm |
| Rated Current at 50Hz | 0.250 A |
| Rated Current at 60Hz | 0.210 A |
| Input Power at 50Hz | 15.5 W |
| Input Power at 60Hz | 14.5 W |
| Input Power Tolerance | +10% / -20% According to NMB Documentation |
| Nominal Fan Speed at 50Hz | 2600 RPM |
| Nominal Fan Speed at 60Hz | 2900 RPM |
| Maximum Airflow at 50Hz | 89.3 CFM |
| Maximum Airflow at 60Hz | 103.6 CFM |
| Maximum Airflow at 50Hz in Metric Units | 2.50 m³/min |
| Maximum Airflow at 60Hz in Metric Units | 2.90 m³/min |
| Historical Airflow Figure at 50Hz | 88.2 CFM in an Older NMB Series Datasheet; Current Manufacturer Product Page Lists 89.3 CFM |
| Historical Airflow Figure at 60Hz | 102.0 CFM in an Older NMB Series Datasheet and Distributor Records; Current Manufacturer Product Page Lists 103.6 CFM |
| Airflow Data Note | The Manufacturer's Current Product Pages and Older Catalog Express the Same 2.50 / 2.90 m³/min Values with Slightly Different CFM Figures; Current Product-Page Values Are Used Here |
| Maximum Static Pressure at 50Hz | 64.7 Pa |
| Maximum Static Pressure at 60Hz | 76.4 Pa |
| Maximum Static Pressure at 50Hz in Inches of Water | 0.26 in H₂O |
| Maximum Static Pressure at 60Hz in Inches of Water | 0.31 in H₂O |
| Noise Level at 50Hz | 37 dB |
| Noise Level at 60Hz | 41 dB |
| Motor Structure | Shaded-Pole Induction Motor |
| Motor Protection | Impedance Protection |
| Bearing Type | Ball Bearing |
| Manufacturer-Listed Life Expectancy | 100,000 Hours L10 at 25°C |
| Life Rating Interpretation | L10 Is a Statistical Life Reference Corresponding to 10% Failure Under the Defined Test Conditions; Not a Guaranteed Individual Service Life |
| Legacy Distributor Life Reference | 50,000 Hours at 25°C in DigiKey Historical Product Attributes; Different from the Manufacturer's Current L10 Reference |
| Approximate Mass | 550 g in NMB Manufacturer Documentation |
The NMB-MAT 4715MS-12T-B50 is an AC axial cooling fan from the 4715MS product family. The manufacturer-documented full model, 4715MS-12T-B50-A00, operates from a nominal 115 VAC supply at either 50Hz or 60Hz. It is intended for forced-air ventilation in compatible industrial control equipment, electronic power supplies and machinery enclosures.
The fan features a 119 mm square housing and a 38 mm frame depth. Its black-painted aluminum casing and UL94V-0 plastic impeller are documented in NMB's series datasheet. The flange-type mounting arrangement includes a nominal 105 mm mounting-hole spacing, supporting installation in equipment designed for this mechanical format.
NMB specifies 0.250 A, 15.5 W and 2600 RPM at 50Hz, compared with 0.210 A, 14.5 W and 2900 RPM at 60Hz. These ratings demonstrate why the correct operating frequency is important when calculating electrical loading, evaluating fan operation and selecting replacements for equipment used in different power systems.
Current NMB product pages list a maximum airflow of 89.3 CFM at 50Hz and 103.6 CFM at 60Hz. Maximum static pressure is 64.7 Pa and 76.4 Pa, respectively. An older series catalog gives slightly different CFM conversions for the same 2.50 and 2.90 m³/min values. Actual installed airflow depends on the equipment's airflow resistance.
The 4715MS-12T-B50-A00 uses a shaded-pole induction motor with impedance protection and ball bearing construction. The manufacturer lists a 100,000-hour L10 expected life at 25°C and an operating temperature range of -10°C to +70°C. The published expected-life figure is a statistical reliability reference rather than a guaranteed service duration.
NMB identifies 11938MB-A1N-EA-00 as the updated part number for 4715MS-12T-B50-A00. Both 50Hz and 60Hz current manufacturer product records specify the same electrical and airflow performance for the newer designation. Replacement selection should still confirm the complete model, terminal arrangement, mounting dimensions, grounding provisions and equipment requirements.
We support online purchase inquiries for the NMB-MAT 4715MS-12T-B50 AC Axial Fan. For individual units, bulk requirements or related industrial cooling products, please contact our team with the required quantity, complete model number and equipment specifications. The documented standard configuration is 4715MS-12T-B50-A00, rated for nominal 115 VAC at 50Hz and 60Hz. We can provide quotation information and discuss applicable delivery and transportation arrangements after reviewing your request. NMB identifies 11938MB-A1N-EA-00 as the newer part number. Before ordering or installing a replacement, confirm the electrical supply, operating frequency, full model suffix, two-terminal or equipment-specific lead-wire connection, protective grounding provision, 119 × 119 × 38 mm dimensions and required cooling performance. AC electrical installation should be performed by appropriately qualified personnel using applicable safety procedures.
What is NMB-MAT 4715MS-12T-B50?
NMB-MAT 4715MS-12T-B50 is an AC axial cooling fan from NMB Technologies. The manufacturer's documented complete model is 4715MS-12T-B50-A00. It operates at a nominal 115 VAC with 50Hz and 60Hz ratings and has a 119 × 119 × 38 mm frame, ball bearings and a shaded-pole induction motor.
Is 4715MS-12T-B50 an AC fan or a DC fan?
It is an AC axial cooling fan. The documented model uses a nominal 115 VAC alternating-current supply. It must not be connected directly to 12 VDC, 24 VDC or 48 VDC fan circuits. Similar physical dimensions do not establish compatibility with DC axial fans.
What are the voltage and frequency specifications?
NMB specifies 115 VAC nominal voltage with separate 50Hz and 60Hz operating characteristics. The published starting voltage is 65 VAC at both frequencies. This starting-voltage specification does not establish 65 VAC as the recommended continuous operating voltage; use the manufacturer's nominal supply rating.
What are the dimensions and mounting-hole specifications?
The fan is nominally 119 mm wide, 119 mm high and 38 mm deep. NMB's mechanical drawing specifies 119.0 ±0.5 mm frame dimensions, 38.0 ±0.5 mm depth, 105.0 ±0.3 mm mounting-hole center spacing and 4.3 mm mounting holes. Confirm equipment clearance and mounting details before replacement.
What is the rated current at 50Hz and 60Hz?
The manufacturer specifies 0.250 A at 50Hz and 0.210 A at 60Hz. The difference is associated with the operating characteristics of the AC induction motor at each supply frequency. Use the appropriate value when evaluating equipment fan circuits and electrical loading.
What is the input power of 4715MS-12T-B50?
NMB lists 15.5 W at 50Hz and 14.5 W at 60Hz, with a published power tolerance of +10% / -20%. These are manufacturer-specified real input-power ratings. Multiplying AC voltage by RMS current does not necessarily give the same wattage because the motor's power factor affects real power consumption.
What is the fan speed at 50Hz and 60Hz?
The documented fan speed is 2600 RPM at 50Hz and 2900 RPM at 60Hz. Both are specified by NMB for the complete 4715MS-12T-B50-A00. The appropriate frequency-specific speed should be used when comparing cooling performance and replacement options.
What are the maximum airflow and static pressure ratings?
The manufacturer's current product pages specify 89.3 CFM maximum airflow and 64.7 Pa maximum static pressure at 50Hz. At 60Hz, they specify 103.6 CFM and 76.4 Pa. Maximum free-air flow and maximum static pressure occur at different operating points and are not simultaneously achieved. Actual airflow depends on equipment airflow resistance.
Why do some distributors list 102CFM instead of 103.6CFM?
Older NMB series documents and distributor product records list 102.0 CFM at 60Hz, while the manufacturer's current product page lists 103.6 CFM. Both sources provide approximately 2.90 m³/min as the corresponding metric airflow. A similar difference appears at 50Hz, with historical documents showing 88.2 CFM and the current product page showing 89.3 CFM. For this product description, the current manufacturer webpage values are used.
What are the motor type, bearing type and expected service life?
The documented fan uses a shaded-pole induction motor with impedance protection and ball bearings. NMB lists an L10 life reference of 100,000 hours at 25°C and an operating temperature range of -10°C to +70°C. The L10 figure describes a statistical life criterion under defined conditions and does not guarantee that every installed fan will operate for that duration.
Does 4715MS-12T-B50 have terminals or lead wires?
NMB's series documentation specifies Faston #110 or equivalent terminals and identifies separate lead-wire configurations using UL3266 AWG22 wire. DigiKey describes the standard 4715MS-12T-B50-A00 as a two-terminal fan, while some distributors refer to two-wire versions. Check the complete assembly and existing equipment harness before ordering. The standard two-terminal configuration does not provide separate tachometer, locked-rotor or PWM control connections.
Is 4715MS-12T-B50 discontinued, and what is the replacement?
NMB identifies 4715MS-12T-B50-A00 as a legacy part number not recommended for new designs, and major distributors list it as obsolete. The manufacturer identifies 11938MB-A1N-EA-00 as its newer designation, with corresponding 50Hz and 60Hz specifications. Before ordering, confirm the full -A00 suffix, nominal 115 VAC voltage, 50/60Hz frequency, 119 × 119 × 38 mm frame, 105 mm mounting-hole spacing, two-terminal connection, protective grounding provision, counterclockwise rotation viewed from the label side and airflow outlet toward the label side. The related 4715MS-12T-B5A-A00 has a different replacement designation, while 4715MS-20T-B50 and 4715MS-23T-B50 belong to different voltage configurations and should not be assumed electrically interchangeable.
