the ie3 motor is a fully enclosed, fan-cooled three-phase asynchronous motor designed for ultra-high efficiency, energy savings, and reliable performance. manufactured in strict compliance with iec and gb standards, this motor utilizes high magnetic permeability, low-loss cold-rolled non-oriented silicon steel sheets. through optimized design, advanced materials, and precision manufacturing processes—including refined rotor slot configurations, optimized fan parameters, and positive-thin windings—energy losses are significantly reduced. the efficiency is improved by 2% to 8% (averaging a 4% increase) compared to standard motors, resulting in lower vibration, reduced noise, and convenient installation and maintenance.

key features

• enhanced efficiency: advanced winding designs and premium low-loss silicon steel reduce energy consumption, lowering operational costs and supporting environmental protection.
• reliable quality & long lifespan: features a class f insulation system evaluated to class b temperature rise (80k), ensuring excellent insulation performance and extended service life.
• superior overload capacity: compliant with iec60034-1, the motor can withstand 1.5 times its rated current for 2 minutes at rated voltage and frequency.
• flexible power supply: specially designed windings support multiple voltages and frequencies (50hz or 60hz). meets class a voltage/frequency error requirements with an allowable deviation of ±5% voltage and ±2% frequency.
• robust construction: the outer casing is made entirely of gray cast iron, with an optional steel junction box.
• advanced sealing: motors in the h80-h132 frame range feature a skeleton oil seal at the drive end (optional oil seal available). for h160 and above, an oil seal at the drive end is standard.
• customizable protection: optional moisture-proof heating belts (space heaters) and thermal protection components (ptc or pt100) for windings and bearings are available.
• technical specifications
• frame size: 80 – 355
• power range: 0.75 kw – 355 kw
• frequency: 50hz / 60hz
• poles: 2, 4, 6, 8
• efficiency class: ie3 (complies with gb18613-2012 class 2 & iec60034-30 ie3)
• duty cycle: s1 (continuous)
• protection class: ip55 / ip56
• insulation class: f
• cooling method: ic411
• operating environment: altitude ≤ 1000m; ambient temperature -15°c to +40°c
• applications
  designed for environments free of flammable, explosive, or corrosive gases, ie3 motors are ideal for driving general industrial machinery. they are widely used across sectors such as electric power, mining, steel metallurgy, petrochemicals, water conservancy, transportation, and building materials. common applications include:
• pumps and compressors
• fans and blowers
• machine tools and reducers
• conveyor belts and crushers
• rolling mills and mining equipment
• manufacturing excellence
  our manufacturing facility is committed to green, efficient, and energy-saving production. we prioritize harmonious environmental development, strictly adhere to standardized manufacturing processes, and select only premium energy-saving materials to guarantee the superior quality and reliability of every ie3 motor we produce.