About Modular / RJ Connectors

Modular and RJ connectors cover the RJ45, RJ11, RJ12, keystone and coupler formats used to terminate Ethernet, telephone and low-voltage data wiring in control panels, network racks and field enclosures. Selection usually hinges on contact count, mounting style (PCB, panel or keystone), shielding for EMI-sensitive runs, and category rating such as Cat5e, Cat6 or Cat6a.