Terminal block housing, with protection class IP54/IP66, nominal cross-section 4mm², Ui=400V AC, polystyrene, internal fastening points, for standard indoor installations, equipped with 25 screw terminals 4mm³ (type Weidmüller WDU 4)Dimensions: 254 x 180 x 90mmIncluded accessories: 8 mounting sockets IP54 M20 sealing range 8-13.5mm, 2 mounting sockets IP54 M25 sealing range 9-18.5mm, 1 mounting socket IP54 M32 sealing range 13-23mm