As a subdivided application field of motor products, Fans are being used more and more widely. Specific applications include building, residential or outdoor ventilation, 5G terminal equipment, and wind power generation cooling. As an electrical device that works uninterruptedly for a long time or even 24 hours, the fan has the phenomenon of overloading and burning the motor coil when it is blocked. Installing a motor protector is a necessary solution. The introduction is about how the application of motor protectors in the fan industry can be important.

What is a motor protector?

A motor protector is a device that is used to protect an electric motor from damage. It is usually installed in the circuit between the motor and the power source and monitors the current flowing through the motor. If the current exceeds a predetermined level, the protector will open the circuit and shut off the power to the motor. This prevents the motor from overloading and burning out.

Application of Saftty ST01 for Fans

The ST01 series is a metal shell that can withstand a pressure resistance of 50Kg. If greater pressure resistance is required, a thicker shell can be customized.

Some fan products have a vacuum impregnation process in the manufacturing process, which has higher requirements for the sealing performance of the motor protector. The ST01 series adopts a unique sealing technology, which can reach -0.08Mpa when the vacuum pressure reaches -0.08Mpa 1%~0.3% paint penetration rate, if it is under the condition of -0.03Mpa, there is basically no probability of dipping paint. However, the fluidity of the insulating varnish during actual use also has a lot to do with it. Specifically, the customer needs to provide the model of the varnish to do corresponding experiments to solve it. In the Saftty shipment inspection, there is a dipping paint sampling link to prevent the occurrence of this problem to the greatest extent.

The requirements for the thickness of the motor protector, many fan models are different, and the number of coil winding turns is different. If there are more winding turns, the volume of the coil will be larger, so that the installation space of the protector will be backlogged. The ST01 series has an ultra-thin version to meet the higher requirements of customers.


We hope that this article has helped you understand the importance of motor protectors in the fan industry. Utilizing a motor protector can help prolong your motor’s life and keep it running smoothly for many years to come. If you are looking for a reliable and trustworthy provider of motor protectors, then please do not hesitate to get in touch with Saftty today. We would be more than happy to discuss your specific needs and requirements and provide you with a tailored solution that meets your exact requirements.


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