Wago double deck 1 and 2 conductor din rail terminal blocks 2022 series wago 2022 2239 wago 2022 2239 n double deck 2 conductor through carrier din rail mount terminal block colour blue for wire sizes awg 22 12 pack size 1 wago 2022 2239 n dbl deck 2 conductor through carrier t block blue awg 22 12