133mm Backward Centrifugal Fan Front View

Seemtek 133mm External Rotor EC Motor 27W 230V Small Compact Backward Curved Centrifugal Fan

Voltage Type: AC

Motor Type: EC Brushless External Rotor Motor

Impeller Diameter: 133mm

Impeller Material: PA Plastic + Glass Fiber

Speed Control: 0-10VDC/PWM

Protection Type: IP44

Insulation Class: B

Operation Temperature : - 25 ℃ ~ +60 ℃

Motor Protection: Locked-Rotor Protection, Reverse Polarity Protection, Thermal Protection, Soft Start

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Technical Parameters

Model No.	BearingSystem	RatedVoltage	Frequency	RatedCurrent	RatedPower	RatedSpeed	AirFlow	AirPressure	NoiseLevel
Model No.	B/S	VAC	Hz	A	W	RPM	Ma/H	Pa	DBA
B3E-2A133-S7-00	Ball	230	50/60	0.27	27	3800	260	420	66

Outline Drawing

B3E-2A133-S7-00 2D

Performance Curve

B3E-2A133-S7-00 PQ

Application Fields

Renewable Energies

As renewable energy continues to make up a larger share of the global power supply, the systems responsible for generating, storing, and distributing that energy must meet ever-higher standards for efficiency, reliability, and durability. At Seemtek, our advanced, intelligently controlled fans are designed to meet these demands—ensuring effective thermal management across a wide range of renewable energy applications. Drawing on our deep industry experience and commitment to innovation, we support the long-term, stable operation of electric vehicle charging stations, energy storage units, solar inverters, and other clean energy infrastructure.

Application Fields

Ventilation

In the design of ventilation equipment, human health and comfort are key considerations. The low-noise, high-performance fans offered by Seemtek ensure optimal airflow while enhancing comfort and promoting a healthy environment. By integrating Seemtek’s energy-efficient drive systems and intelligent control technologies, our biomimetic fans deliver stable and efficient performance in a wide range of applications, maintaining low noise levels that are almost imperceptible. The ideal modern ventilation system is quiet, discreet, and highly reliable, achieving excellent energy efficiency and economic operation through precise control and intelligent adjustment based on demand.