Wieland selos feed through din blocks wkwkn uv0 bluegrey wieland 5750300556 this blue selos feed through din block wk 25uv0 24a from wieland has been designed for efficient wiring and offers optimum handling reliable and maintenance free the smaller size makes it perfect in areas with limited space and is simple to connect wieland 5750300556 selos feed through din block wk 2 5 u v0 24a blue