Wieland selos feed through din blocks wkwkn uv0 bluegrey wieland 5751001556 this blue selos feed through din block wk 10uv0 57a 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 5751001556 selos feed through din block wkn 10 u v0 57a blue