Bare Schneider Electric aluminum Cable connector for Compact NSX 400/630 and Easy Pact CVS 400/630. These connectors can receive 1 copper or aluminum Cable from 35 mm 2 2 to 300 mm 2 C 2 2. The connectors snap directly to the device terminals or are clipped to the terminal extensions. They are sold in sets of 3. No use of highly toxic metals, no use of mercury