Citel DS42S-230/G SPD, multipolar, type 2, AC, 1-phase, 230VProduct Overview The DS42S 230 G is a Type 2 AC surge protector with integrated remote signaling designed for primary protection of single phase networks in wind turbine and industrial applications. This 2 pole SPD features hybrid MOV+GDT technology providing both common mode and differential mode protection with pluggable modules for each phase, thermal disconnectors, and changeover contact remote signaling for comprehensive system monitoring in