PANDUIT FSD77-12-D insulated ferrules are designed for single wire containment, meeting DIN standards. The polypropylene insulation housing conforms to DIN color requirements, and the funnel entry facilitates faster insertion and reduces installation costs. The seamless barrel ensures superior terminations by containing loose wire strands, easing wire insertion into terminal blocks and making them suitable for limited space panel applications. These ferrules are ideal for various terminal block applications and contribute to reliable electrical connections.