Wieland selos feed through din blocks wkwkn uv0 bluegrey wieland 5751601556 this blue selos feed through din block wkn 16uv0 71a 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 5751601556 selos feed through din block wkn 16 u v0 71a blue