The Insulator (OEM Part No. 3217997824) is an electrical spare part compatible with Epiroc underground mining equipment, including M4C, E70, M2D, T1D, M40S, Boomer 291, S7D, Boomer-MD, EST-2D, M2C, and S1D models. Manufactured from high-insulation plastic material, it functions as an electrical isolation and protection component installed in connector and control systems. The insulator helps prevent electrical interference, improves safety, and maintains stable circuit operation. Designed for demanding mining environments, this replacement electrical component provides reliable insulation performance, excellent durability, and long service life.