📘 Product Overview
The YFBX4 series high-efficiency dust explosion-proof three-phase asynchronous motor is designed and manufactured in accordance with GB12476.1-2000 (IEC 61241-1-1999), which specifies electrical equipment for use in combustible dust atmospheres, protected by enclosures and limited surface temperature.
The frame size ranges from 63 to 400, and both power ratings and mounting dimensions fully comply with International Electrotechnical Commission (IEC) standards.
The YFBX4 series also complies with GB/T 3836.1-2021 and GB/T 3836.31-2021 standards for explosive atmospheres, ensuring reliable safety performance in dust hazardous environments.
⚙️ Product Structure & Features
The YFBX4 series is a fully enclosed, self-fan-cooled squirrel-cage asynchronous motor.
It features a modern design, compact structure, attractive appearance, high efficiency, high torque performance, excellent aerodynamic characteristics, energy saving, low noise, low vibration, and reliable operation.
The motor is widely recognized for its stable performance and safety in industrial dust explosion environments.
🔥 Explosion Protection Type
- Ex tD A21 IP65 T130°C
Suitable for dust explosive environments classified as Zone 21 hazardous areas.
🌐 Application Scope
The YFBX4 series is widely used in industries with combustible dust environments, including:
- Grain processing industry
- Textile industry
- Cement industry
- Metallurgy
- Chemical industry
- Light industrial manufacturing
- Wood processing and paper production
🧩 Engineering Highlights
- Fully enclosed dust explosion-proof design
- High efficiency and energy-saving performance
- Low vibration and low noise operation
- Reliable thermal control and surface temperature limitation
- High mechanical strength and durability
- Stable operation in harsh dust environments
📐 Thermal & Insulation Performance
The insulation class is typically F or H, with identical technical structure but different temperature rise limits.
The YFBX4 series generally adopts F-class insulation.
Under standard conditions (altitude ≤ 1000 m, ambient temperature ≤ 40°C), the stator winding temperature rise limit (resistance method) shall not exceed 80K.
🧠 Compliance Standards
This series complies with:
- GB12476.1-2000 (IEC 61241-1-1999)
- GB/T 3836.1-2021
- GB/T 3836.31-2021
Ensuring full compliance with international dust explosion protection standards.
