Application. HDC - , pin, number of poles: 1. Heavy-duty connectors are now used everywhere where secure, simple, and time-saving assembly of machines and systems is required. The aluminum die-cast connector housings provide excellent protection against dirt, moisture, and mechanical stress. Special modular connectors allow the combination of signals, power supply, pneumatics, and fieldbus connections in a single connector. Weidmüller offers a future-oriented range of new RockStar® heavy-duty connectors with many patented innovations. It represents one of the largest assortments worldwide. It impresses with stainless steel latches on the standard housing and the uniquely simple Push In connection in use.