YBX4-132S2-2 Ex Db Motor 7.5kw 380v IC411

Brief Introduction

The SIMO YBX4 series high-efficiency flameproof three-phase asynchronous motor is the latest premium-efficiency solution from Xi'an Taifu Xima Electric Motor Co., Ltd., a professional Chinese manufacturer with rich experience in explosion-proof electric machinery. Designed for the harshest industrial environments, the YBX4 series is a true ex db motor built to certified flameproof standards, providing a secure power source in hazardous locations where flammable gases and vapors may be present - such as oil refineries, petrochemical plants, coal mines, natural gas stations and chemical workshops.

As the world moves toward stricter energy-efficiency regulations, the YBX4 series answers the call with IE4 premium-class performance. Thanks to optimized electromagnetic design, premium silicon-steel lamination and precision manufacturing, these motors achieve a rated efficiency of up to 91.7%, significantly reducing electricity consumption, carbon emissions and total lifecycle cost. Every unit is rigorously tested and certified, combining world-class efficiency with uncompromising safety. Available across a wide range of powers, speeds and mounting configurations, the YBX4 family brings certified explosion-proof power to almost any hazardous-duty application.

The YBX4 series is engineered around a complete flameproof protection system. Its explosion-proof marking Ex db IIB T4 Gb indicates that the motor adopts a flameproof enclosure (Ex d) with the latest "db" protection concept, suitable for gas group IIB atmospheres and a maximum surface temperature class of T4 (135°C). The Gb protection level ensures a high level of safety for equipment that may be installed in Zone 1 hazardous areas. The motor complies with the Chinese national explosion-proof standard and is covered by the explosion-proof certificate CNEx20.5105, giving customers full confidence in its legal and technical compliance.

Take the nameplate model YBX4-132S2-2 as an example: it delivers 7.5 kW output at 50 Hz with a rated voltage of 380 V and a rated current of 14.0 A, running at a speed of 2930 r/min with a power factor of 0.89. The motor is connected in delta (△) and designed for continuous duty (S1), making it ideal for pumps, fans, compressors, conveyors and other long-running industrial equipment. It also features high starting torque and low starting current, ensuring smooth, dependable startup even under load.

Robustness runs through every detail. The motor features a cast-iron frame with cooling fins, offering IP55 ingress protection against dust and water jets, so it can be installed safely outdoors or in dusty workshops. Insulation is Class 155 (F), allowing a temperature rise margin that extends service life even under heavy load. It operates reliably at ambient temperatures up to 40°C and altitudes up to 1000 m, with a cooling method of IC 411 (self-ventilated) and a standard mounting arrangement of IM B3. High-quality FAG 6208-2Z/C3 bearings on both the drive end and non-drive end ensure quiet, smooth rotation, low vibration and long maintenance-free intervals, while the precision-balanced rotor keeps noise and vibration well within limits. All these features together make the YBX4 an ex db motor that performs exactly as specified under the toughest working conditions.

Quality assurance begins at the design stage and continues through every step of production. The YBX4 series is manufactured in accordance with the enterprise standard QXD.510.262-2022, under a complete quality management system covering material inspection, machining, winding, assembly, dynamic balancing and final test. Every motor is individually inspected and carries its own serial number and production date, ensuring full traceability from the factory floor to the customer site.

The YBX4 series is widely applied across the petroleum, chemical, coal, electric power, metallurgy and municipal industries, powering explosion-proof pumps, blowers, mixers, hoists and other equipment in Zone 1 and Zone 2 hazardous areas. By choosing the SIMO YBX4, customers obtain not only a certified, high-efficiency ex db motor but also the comprehensive support of a professional manufacturer: a nationwide service hotline (400-029-1177), reliable spare parts supply, prompt technical assistance and fast response to on-site needs, whether at home or abroad. Energy efficiency, certified safety, rugged durability and dependable service - that is the SIMO YBX4 promise to every customer.

Main Technical Parameters

Production Details

Frame

• Compact iron casting frame

• Universal installation dimensions available

• Customizable

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Stator

• 99.9% pure copper winding ensures the output power and efficiency

• Excellent insulation system with 5 more processing flows

• All the windings are fitted in by handwork

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Rotor

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

• 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 YBX4  Explosion Proof Motor is mainly applied in areas with mixed dangerous and explosive gases, such as underground coal mine, chemical engineering, metallurgical industry, natural gas areas, etc.

Chemistry

Coal mining

Metallurgy

Oil gas

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