Ex coupling for zone 2, 16 A, 4-pin, 200-250 V, 9 h, cable entries: 1, polyamide, cable entries/housing holes: Ø 8 - 21 mm, housing material: polyamide, rated voltage: up to 750 V AC, frequency: up to 400 Hz, rated current: 16 A, marking according to 94/9/EC: Ex II 3 G Ex nC IIC T5/T6, EC type examination certificate: PTB 99 ATEX 1115, permissible ambient temperature: -20 °C to 40 °C, dimensions (L x W x H): 279 x 86 x 90 mm, weight: 1.7 kg, protection class: I, protection type according to EN 60529: IP66,