YFB250M-4 Flameproof Three-phase Asynchronous Ip 65 Motor 55kW

Brief Introduction

The YFB250M-4 ip 65 motor, a flagship model from SIMO Motor under the SIMO brand, is a robust dust explosion-proof three-phase asynchronous motor engineered to deliver safe, efficient performance in high-risk industrial environments. Designed to combat the hazards of combustible dust, it is the ideal power solution for industries including grain processing, woodworking, chemical manufacturing, and mining, where safety and reliability are non-negotiable.

This model boasts a rated power of 55 kW, operating at 380 V, 50 Hz with a rated current of 102 A and a synchronous speed of 1485 r/min. It achieves an impressive efficiency of 95.7% and a power factor (cosφ) of 0.86, significantly reducing energy consumption and operational costs while aligning with global green industrial standards. Adopting a delta (△) connection and S1 continuous duty rating, it ensures stable, uninterrupted operation even during prolonged production cycles, minimizing downtime and maximizing productivity.

Safety is embedded in every design choice of the YFB250M-4 ip 65 motor. It holds an authoritative explosion-proof certificate (No. CNEx25.2580X) with a rating of Ex tb IIIC T135 °C Db, effectively preventing sparks or surface overheating from igniting surrounding dust-air mixtures. Complemented by Class 155 (F) thermal insulation, IP65 ingress protection, and an IC411 cooling system, it provides comprehensive defense against dust, moisture, and thermal overloads, safeguarding both personnel and equipment. Both the drive end (D.E.) and non-drive end (N.D.E.) are equipped with premium 6314/C3 bearings, which offer exceptional load capacity, low friction, and extended service life, drastically reducing maintenance frequency and costs.

Compliant with the enterprise standard Q/XD.510.322-2024, the YFB250M-4 ip 65 motor weighs 420 kg and features an IM V1 mounting configuration for flexible installation. It is engineered to operate reliably at altitudes up to 1000 m and ambient temperatures of 40 °C, adapting to diverse industrial conditions. Backed by SIMO's decades of manufacturing expertise and a dedicated after-sales support hotline (4000291177), the YFB250M-4 stands as a trusted, high-performance choice for businesses seeking a safe, efficient, and durable power solution in dust-explosive environments.

Main Technical Parameters

Why choose Simo Brand YFB series of Motor?

We highly recommend SIMO's YFB series for its uncompromising safety and performance. Certified with Ex tb IIIC T135°C Db and IP65 protection, it ensures absolute safety in combustible dust environments. Boasting 95.7% high efficiency and durable 6314/C3 bearings, it reduces energy costs and maintenance needs. Backed by SIMO's reputable manufacturing, it delivers reliable, long-lasting operation ideal for grain, woodworking, and chemical industries.

Production Details

Frame

• Compact and robust iron casting frame

• Universal IEC installation dimensions available

• Customizable

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Stator

• 99.9% pure copper winding for stator to ensure the efficiency

• Excellent insulation system with 5 more processing flows

• All the windings are fitted in by handwork to ensure all slots are full and avoid any winding flaw.

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Rotor

• Aluminum casting rotor with high quality silicon steel rotor core to assure induction efficiency

• Well and precisely machined shafts with good capacity of strength and toughness

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Testing

• All motors must pass the piece testing before painting and packaging

• Type tests will be regularly performed for each series, more often for new developed series and variants.

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Package and delivery

• Plastic cover inside, vacuum tin foil outer and then solid wood box

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Applications

The YFB  Explosion Proof Motor is widely applied in coal mine, petrochemical industry or other industry which may exposed to explosive environment. It can drive blower, water pump and other machines.

Chemistry

Coal mining

Metallurgy

Oil gas

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