Water Proof Motorized Fans, Technical Features Overview
IP55 Water and Dust Proof for Longer Lifespan
PBM Waterproof motorized fans adopted leading external motor’s BMC(Bulk/Dough Molding Compounds) overmoulding stator to minimize metal material and motor weight as Ecology construction design compared to conventional EC external motor, offers further benefits when it was used in refrigeration, heating and ventilation applications, industries, products and systems. To manage the required quantum leap and arrive at lower nose and better efficiency new construction principles and materials, or components structures, to be more precise with outstanding waterproof and moisture resistance, are needed. This is the approach PBM, a centrifugal fans manufacturer, took with its revolutionary concept, blending seemingly irreconcilable characteristics into one harmonious functional fan unit.
“BMC(Bulk/Dough Molding Compounds) Overmoulding” is an advanced leading technic adopted on external motor stator’s construction design recent years, with saturated polyester compound material general application in motor industry, as replacement of metal to improve not only motor technology but also cost competitive and improving the efficiency and yield of motor and fan manufacturing process. BMC’s main raw materials are mass prepreg made of GF (chopped Glass Fiber), UP (unsaturated resin), MD (filler) and various additives. Its advantages are: as strong as metal, better heat conduction, excellent insulation performance, easier and cheaper to be shaping and forming by low pressure and temperature moulding to guarantee enough insulation strength of motor inside material to enhance service life of it.
AC and DC power supply are available for entire range of waterproof fans with integrated and intelligence EC technology motor with inside or outside mounted international standard remote control R485 communication protocol that’s suitable to be adopted in IoE(Internet of Everything), IoT(Internet of Things), smart home system, Industry 4.0 and committed to Carbon Neutrality climate change by reducing customers carbon footprints. PFC(Power Factor Correction), up to λ>96%, is optional for electricity grad stabilization compliance in certain circumstances of applications. ErP2015 (Energy-related Products) conformity, COMMISSION REGULATION (EU) No 327/2011 of 30 March 2011 implementing Directive 2009/125/EC of the European Parliament and of the Council with regard to eco-design requirements for fans driven by motors with an electric input power between 125 W and 500 kW.
Application
Stable airflow for cold storage & cold chain. Low-temp resistant, high pressure, anti-icing, ensuring reliable temperature control for food and pharma.
High static pressure, low noise, clean airflow for IT & electronics. Reliable cooling for precision equipment and cleanroom environments.
Clean airflow for ventilation & purification systems. High efficiency, low noise, stable delivery for cleanrooms and air cleaning equipment.
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133mm Waterproof IP55 EC-AC Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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133mm Waterproof IP55 EC-AC Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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133mm Waterproof IP55 EC-AC Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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133mm EC-DC Waterproof IP55 Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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133mm EC-DC Waterproof IP55 Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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133mm EC-DC Waterproof IP55 Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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133mm EC-DC Waterproof IP55 Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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175mm Waterproof IP55 EC-AC Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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175mm Waterproof IP55 EC-AC Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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175mm Waterproof IP55 EC-AC Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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175mm EC-DC Waterproof IP55 Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
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175mm EC-DC Waterproof IP55 Backward Curved Centrifugal F...
PBM FOCUS ON EC FAN ONLY. Certificate: CE,UL,ROHS; Supply Ability: 100,000 pcs per year; MOQ: 1~100 pcs based on EXW price; 100 pcs above based on FOB price.
FAQ
Q: How do I choose the right waterproof IP55 fan?
A: When selecting a waterproof IP55 fan, buyers should consider:
● Required airflow (CFM or m³/h)
● Static pressure requirements
● Installation environment
● Voltage and frequency
● Fan size and mounting method
● Noise level requirements
● Operating temperature
● Continuous or intermittent operation
Reviewing the fan performance curve is important to ensure the fan matches the ventilation system requirements.
Q: What applications are IP55 waterproof fans commonly used for?
A: Waterproof IP55 fans are widely used in industrial and commercial applications such as:
● Outdoor HVAC systems
● Agricultural ventilation
● Greenhouses
● Industrial cooling equipment
● Food processing facilities
● Marine environments
● Warehouses and workshops
● Dusty manufacturing plants
Their moisture-resistant and dust-protected design makes them suitable for demanding operating conditions.
Q: Can waterproof IP55 fans be customized for OEM projects?
A: Yes. Many manufacturers provide customized IP55 waterproof fan solutions for OEM and industrial applications. Customization options may include:
● AC or EC motor configuration
● Fan size and airflow performance
● Voltage and frequency
● Mounting structure
● Speed control integration
● Corrosion-resistant materials
● Noise optimization
● Special environmental protection requirements
Customized waterproof fans are commonly used in industrial equipment, HVAC systems, and specialized ventilation projects.
Q: Can IP55 waterproof fans be used outdoors?
A: Yes. Many IP55 waterproof fans are designed for outdoor or semi-outdoor installations. They can withstand rain, humidity, and airborne dust under normal operating conditions. However, for direct exposure to heavy rain, corrosive chemicals, or washdown environments, higher protection ratings such as IP66 or IP67 may be recommended.
Q: Are IP55 waterproof fans suitable for high-humidity environments?
A: Yes. IP55 fans are commonly installed in high-humidity areas where moisture resistance is important, including:
● Cold storage facilities
● Agricultural buildings
● Commercial kitchens
● Underground ventilation systems
● Coastal industrial locations
Their sealed motor construction helps reduce the risk of electrical damage caused by humidity or condensation.
PBM Motor and Fan (Suzhou) Co., Ltd. is one of the most professional waterproof ip55 fan manufacturers and suppliers in China, featured by quality products and good price. Please rest assured to buy customized waterproof ip55 fan made in China here from our factory. Welcome to contact us for quotation.



