DC133-H91 Backward Curved Centrifugal Blower
The DC133-H91 centrifugal blower is a high-performance DC ventilation fan equipped with a brushless external rotor motor and backward curved impeller design. It provides efficient airflow performance, reliable operation, and flexible speed regulation through 0-10VDC/PWM control.
Designed for demanding ventilation applications, this blower delivers excellent air pressure capability while maintaining compact dimensions and low vibration. The unit is suitable for HVAC systems, industrial air purification equipment, medical devices, food processing machinery, and other professional ventilation applications.
Manufactured by Ningbo E-Power Energy Saving Technology Co., Ltd., a professional manufacturer specializing in high-performance motors, fans, and power tools since 2001. The company provides integrated R&D, production, and testing capabilities with certifications including CE, LVD, RoHS, REACH, cUL, and ISO9001.
Key Features
High Efficiency Brushless DC Motor
- Equipped with an external rotor brushless DC motor
- Provides stable performance and long service life
- Suitable for continuous operation applications
Backward Curved Impeller Design
- PA6+GF reinforced impeller material
- Optimized aerodynamic structure for efficient airflow
- Provides higher pressure performance compared with conventional fan designs
Intelligent Speed Control
- Supports 0-10VDC / PWM speed control
- Enables flexible airflow adjustment according to system requirements
- Compatible with intelligent ventilation control systems
Reliable Protection Design
- Protection class: IP44
- Insulation class: Class B
- Operating temperature: -25℃ to +60℃
Technical Specifications
| Model | HF24V13341A1 | HF48V13341A1 | HF24V13341A1H | HF48V13341A1H |
|---|---|---|---|---|
| Rated Voltage | 24VDC | 48VDC | 24VDC | 48VDC |
| Operating Voltage | 16-32VDC | 34-57VDC | 16-32VDC | 34-57VDC |
| Rated Current | 1.4A | 0.7A | 2.3A | 1.15A |
| Rated Power | 33.6W | 33.6W | 55.2W | 55.2W |
| Rated Speed | 3900 RPM | 3900 RPM | 4450 RPM | 4450 RPM |
| Air Flow | 360 m³/h | 360 m³/h | 409 m³/h | 409 m³/h |
| Air Pressure | 382 Pa | 382 Pa | 492 Pa | 492 Pa |
| Noise Level | 63 dBA | 63 dBA | 74 dBA | 74 dBA |
| Weight | 0.7 kg | 0.7 kg | 0.7 kg | 0.7 kg |
| Operating Temperature | -25℃~+60℃ | -25℃~+60℃ | -25℃~+60℃ | -25℃~+60℃ |
Product Structure Information
Product Type: DC Backward Curved Centrifugal Blower
Impeller Material: PA6 + GF
Motor Type: Brushless DC External Rotor Motor
Protection Grade: IP44
Insulation Class: B
Speed Control: 0-10VDC / PWM
Wire Function
| Wire Color | Function |
|---|---|
| Red | Power supply (Vm: 24/48VDC) |
| Blue | GND |
| Yellow | 0-10VDC / PWM Speed Control |
| White | FG Signal Output |
Applications
- HVAC ventilation systems
- Industrial air purification equipment
- Medical equipment cooling systems
- Food processing machinery
- Industrial control cabinets
- Air circulation systems
- OEM ventilation solutions
OEM & Custom Solutions
With professional motor and fan manufacturing capabilities, Ningbo E-Power provides customized DC blower solutions including voltage options, airflow performance adjustment, control methods, and OEM production services for global industrial customers.
