The MS3C (Micro-Change Sealed Connector System) is a sealed circular connector system manufactured and sold by Panduit. It is suitable for a variety of industrial applications, such as factory automation, machine tools, robotics, process control, power and lighting control, instrumentation, medical equipment, and data communication networks. It features three-pole keyed connections and a special, self-locking design that prevents accidental unplugging or tampering. The MS3C connector also meets all UL, CSA and CE international safety standards for safe, reliable connections in industrial and hazardous area applications.