PowerPact R-frame and ComPact NS1600b-3200 circuit breakers come standard with mechanical lugs on both ends of the ready-to-install circuit breakers. I-Line M-frame and P-frame circuit breakers come standard with mechanical lugs on the O/OFF side only. These lugs are suitable for use with copper or aluminum wire. Back connectors, compression lugs and distribution lugs are available for special applications. These lugs are certified to UL, IEC and CSA standards. The PowerPact advantage, proven performance, industry-leading circuit breaker innovation and protection for heavy-duty commercial and industrial applications. Intelligent, integrated metering options provide a cost-effective solution to reduce energy consumption, optimize energy costs and improve energy availability in your facilities. Flexible: A comprehensive range of thermal-magnetic and electronic trip circuit breakers from 15-3000A, with the ratings, configurations and actuators to suit your applications. Simple: Common catalog numbers, standardized ratings and a comprehensive range of field-installable accessories make product selection, installation and maintenance easier than ever. Common design features, mounting holes, door panels and handle accessories.