Marathon XRI® Severe Duty and IEEE-841 Motors
The Marathon XRI® Severe Duty and IEEE-841 motors deliver unmatched durability, premium efficiency, and robust performance in the harshest industrial environments. Designed for chemical plants, paper mills, refineries, and food processing facilities, these cast-iron, inverter-duty motors exceed NEMA® Premium standards and ensure long-term reliability with advanced insulation and bearing protection technologies.
Key Points
- Built for Harsh Environments: Designed for industries like chemical processing, refineries, and paper mills, meeting IEEE-841 and NEMA Premium® efficiency standards.
- Advanced Bearing Protection: Bearing Current Protection (BCP™) and Inpro/Seal® VBX® isolators prevent bearing damage from inverter drives.
- MAX GUARD® Insulation System: Provides Class H protection and unlimited lead length between motor and drive.
- Comprehensive Range: Models from 1 HP to 400 HP, with full catalogs for both Severe Duty (SD) and IEEE-841 configurations.
- Exceptional Durability: 100% cast-iron construction, epoxy-coated inside and out, precision balanced, and rated IP55/IP56 for severe-duty protection.
- High-Efficiency Operation: Exceeds EISA 2007 efficiency requirements for maximum ROI on continuous-duty applications.
- Flexible Customization: Options for shaft grounding rings, C-face or D-flange mounting, encoders, and bearing upgrades.
- Trusted Brand: Backed by Marathon Electric’s legacy of industrial reliability and a 3–5 year warranty, depending on the model.