SSJ4 is a family of connector modules produced by TE Connectivity (formerly Tyco Electronics). SSJ4 connectors are typically used in industrial applications, such as robotics, factory automation, and machine building, as well as in military, aerospace, and medical applications. The SSJ4 connector family consists of several different types of products, including wire-to-wire jumpers, crimp connectors, and pin-and-socket connectors. The SSJ4 range also includes water-resistant and vibration-resistant models. TE Connectivity offers a number of accessories for the SSJ4 family, including strain reliefs, seals, and covers.