Official DistributorSKU
3.15 in. (80 mm) AC Centrifugal Fan / Blower
Centrifugal fans / blowers maximize static pressure to provide concentrated airflow in one defined direction. These blowers can be used in a fixed position or mounted on moving parts, and are optimal for local cooling and airflow through ducts.Technical Specifications
| Fan Type | Centrifugal Fan / Blower |
| Impeller Diameter | 3.15 in. |
| Power Supply | Single-Phase 100/110/115 VAC |
| Current (A) | 0.29 [100 VAC, 50 Hz]0.37 [100/110/115 VAC, 60 Hz] |
| Speed (r/min) | 2800 [100 VAC, 50 Hz]3150 [100 VAC, 60 Hz]3300 [110 VAC, 60 Hz]3350 [115 VAC, 60 Hz] |
| Max. Air Flow | 56.5 CFM [100 VAC, 50 Hz]63.5 CFM [100/110/115 VAC, 60 Hz] |
| Max. Static Pressure | 0.61 inH2O [100 VAC, 50 Hz]0.886 inH2O [100 VAC, 60 Hz]0.906 inH2O [110/115 VAC, 60 Hz] |
| Noise Level | 55 dB (A) [100 VAC, 50 Hz]58 dB (A) [100 VAC, 60 Hz]59 dB (A) [110/115 VAC, 60 Hz] |
| Fan Kit | Fan Only |
| RoHS Compliant | Yes |
| Safety Standards | UL |
| CE Marking | Low Voltage Directives |
| Insulation resistance | 100 MΩ or more when 500 VDC is applied between the windings and the frame under normal ambient temperature and humidity. |
| Dielectric strength | Sufficient to withstand 1.5 kV at 50Hz applied between the windings and the frame for 1 minute under normal ambient temperature and humidity. |
| Temperature Rise | 81ºF (45ºC) or less measured by the thermometer method after the temperature of the motor case has stabilized after continuous operation under normal ambient temperature and humidity. |
| Insulation Class | Class E (248ºF [120ºC]), Recognized as Class A (221ºF [105ºC]) by UL and CSA standards. |
| Overheat Protection | Built-in thermal protector (automatic reset type)Operating temperature, open: 248ºF±9ºF (120ºC±5ºC), close: 170.6ºF±27ºF (77ºC±15ºC) |
| Ambient temperature range | 14ºF ~ 122ºF (-10ºC ~ 50ºC) |
| Ambient Humidity | 85% or less (noncondensing) |
Why Proax for Oriental Motor MB840-B?
Proax is the authorized distributor of Oriental Motor MB840-B. Our highly skilled in-house technical team is ready to assist with any technical needs.
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Additional Information
| Alternate Names | MB840B |
| Pack Size | 1 |
