YB2-H Series Marine Flameproof Three-Phase Asynchronous Motor


About product

The YB2-H Series Marine Flameproof Three-Phase Asynchronous Motor is an advanced and reliable motor designed for marine applications. It features high efficiency, energy savings, low noise, and minimal vibration. With flameproof construction, it is suitable for use in explosive gas environments. The motor meets international standards and offers a visually appealing design. It incorporates parallel cooling ribs, ball bearings, and precise electromagnetic parameters for optimal performance and controlled vibrations. The stator windings are well-insulated, ensuring safe operation. The motor’s direction of rotation can be customized based on specific requirements.

Additional information

Frame Size

63-355 MM

Rated Output

0.12-315 KW or 0.10-420 HP

Rated frequency


Rated Voltage

220V/380V/400V/415V/460V/660V or on request


590 —2980 r/min


B3; B35; B34; B14; B5; V1

Ambient temperature


Product Detail

The YB2-H series marine explosion-proof three-phase asynchronous motor is an updated design based on the YB series, offering advanced performance compared to similar international products. It features high efficiency, energy savings, high stall torque, low noise, minimal vibration, and reliable operation. With a visually appealing design, its power levels and installation sizes align with International Electrotechnical Commission (IEC) standards.

The YB2-H series motors meet the requirements of GB3836.2 for electrical equipment in explosive gas environments, specifically the flameproof type “d.” The flameproof structure adheres to the provisions of IEC60079-1 and EN50018. These motors are suitable for explosive gas environments and are classified accordingly, including Class I for mining and Class II for other explosive gas environments except coal mines.

The motors have an enclosure protection level of IP55. The frames feature parallel cooling ribs distributed vertically and horizontally. Ball bearings and small-diameter wide-vane fans contribute to smooth operation with controlled vibration and noise.

The stator windings of the motors are class F insulated, and the temperature rise limit is 80K (resistance method) when operating within specified altitude and ambient temperature values. For specific frame sizes, the temperature rise limit is 105K.

The terminal box of the YB2 range of motors accommodates cab tire cables and provides three terminals for single voltage or six terminals for double voltages. The terminal box is located on the top of the motor, but armored cables can be used upon request.

The direction of rotation varies depending on the frame size, with some motors capable of rotating clockwise and anticlockwise. For specific frame sizes, the rotation direction is fixed and specified as clockwise. Customers should indicate their desired rotation direction when placing an order if it differs from the default setting.

YB2-H Series Marine Motor Designation

yb2 h series marine flameproof three phase asynchronous motor



Know Who We Are

About our company

Zava Marine Corporation is a leading supplier of marine parts and components. With a strong focus on quality and customer satisfaction, we specialize in providing a comprehensive range of high-quality marine equipment and accessories. Our products include deck equipment, ship accessories, and various other essential components needed for smooth maritime operations.

With a global presence, we serve a diverse customer base, including shipbuilders, shipowners, offshore operators, and marine equipment distributors. We are committed to providing exceptional service and tailored solutions to meet our customers’ unique needs.


Zava Marine offers a comprehensive range of certifications for marine parts in accordance with international standards and regulations. These certifications include those provided by renowned marine classification societies such as Lloyd’s Register (LR), Bureau Veritas (BV), China Classification Society (CCS), Registro Italiano Navale (RINA), American Bureau of Shipping (ABS), Nippon Kaiji Kyokai (NK), and Det Norske Veritas – Germanischer Lloyd (DNV-GL). By collaborating with these esteemed societies, Zava Marine ensures that our certified marine parts meet the highest standards of safety, quality, and performance, instilling confidence in our reliability and compliance within the maritime industry.

The warranty provided by Zava Marine covers defects in materials and workmanship for a period of two years from the date of purchase. During this warranty period, if any marine parts purchased from Zava Marine exhibit issues or failures resulting from manufacturing defects or faulty materials, Zava Marine will take responsibility for repair or replacement of the affected parts. 

Zava Marine has recently opened new molds for European and North American clients, utilizing materials such as metal, ABS, PVC, and more. These successful mold opening projects allow us to provide customized marine parts and components that meet the specific requirements of our clients in these regions.

Typically, Zava Marine can ship samples within 7 days once the product drawing has been mutually confirmed by both parties. This efficient process ensures that customers can receive samples promptly, allowing them to assess the quality and suitability of the products.

Zava Marine frequently utilizes a wide range of materials in our projects. These materials include aluminum, stainless steel, carbon steel, copper, plastics, titanium, and PEEK (Polyether Ether Ketone). Each material offers unique properties and characteristics suitable for various marine applications. 

Yes, we provide customization services for marine parts. We understand that every project and application may have unique requirements, and we are committed to delivering tailored solutions. By collaborating closely with our clients, we can adapt our products to specific specifications, ensuring optimal fit, performance, and compatibility. Whether it’s modifying existing designs or creating entirely new parts, our customization services cater to the diverse needs of the maritime industry.

Absolutely! We offer product design and development services to support our clients’ needs. Our experienced team of engineers and designers can collaborate with clients from concept development to final product realization. By leveraging our expertise in marine engineering and design, we can provide valuable insights and innovative solutions. Whether it’s optimizing existing designs or creating entirely new products, we are equipped to assist clients in bringing their ideas to life efficiently and effectively.

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