ABB 3GJM252210-ADK Flameproof IE3 Mining Motor Exdb

Exdb flameproof protection paired with an IP66 enclosure reduces ignition risk and protects against washdown, delivering safe operation in dusty, wet mining corridors. The robust cast-iron frame and reliable bearings withstand high vibration and frequent starts, lowering unscheduled downtime and maintenance costs. With a Top terminator box and IMB3/IM1001 mounting, installation aligns with common mining standards, reducing commissioning time. This design is purpose-built for hazardous areas where safety, durability, and uptime drive production. IE3 premium efficiency at 55 kW yields tangible energy savings across shifts and varying loads. Full-load efficiency at 400 V and 50 Hz is rated around 94.6%, with even higher partial-load figures near 95%. Lower thermal load translates to cooler operation, longer insulation life, and reduced cooling costs in remote equipment rooms. When integrated with variable-frequency drives, the motor's efficiency curve optimizes power draw while preserving torque and startup performance. The 4-pole, frame size 250 design delivers compact power density while maintaining mechanical robustness. D connection supports straightforward 400 V delta operation, simplifying wiring and protection schemes in existing plant electrical rooms. The IMB3/IM1001 mounting offers reliable alignment on standard bases and easy interchangeability with other ABB 3JM family motors. Operating conditions include altitude up to 1000 m and ambient temperatures up to 40 °C, ensuring consistent performance in variable mine sites. Insulation class ICLF and IC411 electrical data provide a safety margin under S1 duty, while the Exdb protection ensures compliance with mining and hazardous-area standards. The 508 kg class machine's mechanicals—bearing 6315/C3, NDE bearing 6313/C3—support long service intervals and predictable maintenance planning.