Wago 6mm 3 conductor terminal block awg 28 12 281 series wago 281 993 wago 281 993 6mm wide 3 conductor through terminal block atex ex e ii colour grey for wire sizes awg 28 12 pack size 50 wago 281 993 6mm 3 cond through terminal block atex ex e ii grey awg 28 12 50pk