RSK-750

The NSI Industries RSK-750 Easy-Splice Direct Burial Splice Kit provides a reliable, UL486D-listed solution for securing and insulating splices in copper and aluminum cables ranging from 250 to 750 MCM. This kit features an in-line mechanical set-screw connector pre-filled with oxide inhibitor to prevent corrosion and ensure long-term conductivity. The included EPDM rubber insulating cover delivers a watertight, UV-resistant seal, making it ideal for direct burial applications where environmental exposure is a concern. Designed for heavy-duty use, the RSK-750 is rated for 600 volts and supports applications such as street lights, motor connections, irrigation systems, HVAC units, and outdoor lighting. The splice kit’s mechanical set-screw design ensures a secure connection without the need for specialized tools, while the pre-applied oxide inhibitor simplifies installation and reduces the risk of oxidation over time. The EPDM rubber cover is engineered to withstand direct burial conditions, providing both electrical insulation and mechanical protection. Each RSK-750 kit includes one mechanical connector and one rubber cover, with a standard carton quantity of 3 units. The connector length is 6.25 inches, accommodating the full range of 250-750 MCM cables. This splice kit is dual-rated for both copper and aluminum conductors, eliminating the need for separate connectors and reducing inventory complexity. The UL486D listing confirms compliance with stringent safety and performance standards, ensuring reliable operation in demanding environments. For professionals seeking a durable, easy-to-install solution for direct burial splices, the NSI RSK-750 combines mechanical reliability with environmental protection. Its design allows for immediate energization of cables post-installation, making it a practical choice for time-sensitive projects. Whether used in municipal infrastructure, industrial settings, or commercial installations, this splice kit delivers consistent performance and peace of mind.