Difference Between IE2 and IE3 Motor Efficiency Explained

When choosing electric motors for industrial applications, understanding the difference between IE2 and IE3 motor efficiency classes is essential. These classifications are not just technical jargon—they directly impact energy consumption, heat losses, equipment lifespan, and your factory’s operational costs. If you're comparing options from different electric motors suppliers , it’s important to know how IE2 and IE3 efficiency levels affect performance and long-term savings. What Are IE Efficiency Classes? The International Efficiency (IE) classification is a global standard defined by IEC 60034-30. It categorizes low-voltage three-phase electric motors based on their energy efficiency. The common classes are IE1 (Standard Efficiency), IE2 (High Efficiency), IE3 (Premium Efficiency), and IE4 (Super Premium Efficiency). In many countries, including Saudi Arabia through the Saudi Energy Efficiency Center (SEEC), IE3 motors are mandated for most industrial applications. This move aim...