Allen-Bradley 140U-I3C3-C40 Molded Case Circuit Breaker, 40A, 3-Pole

The Allen-Bradley 140U-I3C3-C40 is a high-performance molded case circuit breaker designed for industrial and commercial electrical systems. This 3-pole breaker offers reliable overcurrent protection with a 40A continuous current rating, suitable for applications in motor control centers, panelboards, and switchboards. It features thermal-magnetic trip technology for precise protection against overloads and short circuits, ensuring safety and minimizing downtime. Key advantages include its compact I-frame design, which allows for easy installation in space-constrained environments, and high interrupting capacities up to 35kA at 480V AC, outperforming many standard breakers in fault handling. Benefits include robust construction for harsh industrial settings, compatibility with Rockwell Automation systems, and compliance with UL 489 and IEC standards. Drawbacks may include higher initial cost compared to basic breakers and the need for professional installation. Ideal for protecting motors, transformers, and distribution systems, it provides superior reliability over competitors like Schneider or Siemens equivalents by integrating seamlessly with Allen-Bradley controls. Based on image analysis, this unit appears new or factory-sealed, with no visible wear, making it a valuable asset for upgrades or spares.