YBX4-BT4 series Superior Efficiency Flameproof Three-phase Asynchronous Motor

YBX4-BT4 series is a superior efficiency flameproof three‑phase asynchronous motor. As a fully enclosed fan‑cooled squirrel‑cage motor, it incorporates new materials, advanced technology and optimized design, representing a new generation of energy‑saving products.

This series features high efficiency, high starting torque, low noise, robust construction and a mature cooling system. It is a general‑purpose motor suitable for driving various common equipment such as compressors, fans, and water pumps. Applications extend to petroleum, chemical, pharmaceutical, mining, and other related fields.

Based on the YBX4 series, a range of derivative models can be provided, including:  
- YBX4‑W (outdoor type)  
- YBX4‑TH (indoor wet tropical type)  
- YBX4‑THW (outdoor wet tropical type)  
- YBX4‑TA (indoor dry tropical type)  
- YBX4‑TAW (outdoor dry tropical type)  
- YBX4‑FI (indoor medium corrosion type)  
- YBX4‑WFI (outdoor medium corrosion type)  
- YBX4‑FZ (indoor strong corrosion type)  
- YBX4‑WF2 (outdoor strong corrosion type)

The motor meets the following efficiency standards:  
- Chinese national standard GB 18613‑2020 class II  
- IEC 60034‑30 superior efficiency (IE4)

Flameproof performance complies with:  
- GB 3836.1‑2021 *General Requirements for Electrical Equipment Used in Explosive Atmospheres*  
- GB 3836.2‑2010 *Flameproof Enclosure “d” for Electrical Equipment Used in Explosive Atmospheres*  
- IEC 60079‑1

Approval markings:  
- **Ex db I AT4/BT4 Mb** – for non‑excavation applications and coal mines with methane or coal dust.  
- **Ex db II AT4/BT4/CT4 Gb** – for explosive gas atmospheres corresponding to Factory II, Groups A, B, C, and temperature classes T1 to T5.