Ex flange socket for zone 1/21, 16 A, 5-pin, 346-415 V, 6 h, housing material: polyamide, rated voltage: 500 V AC, frequency: up to 400 Hz, rated current: 16 A, marking according to 94/9/EC: Ex II 2 G Ex ed IIC T6 / Ex II 2 D Ex tD A21 IP66 T80 °C, EC type examination certificate: flange socket: PTB 99 ATEX 1040 U, permissible ambient temperature: -20 °C to 40 °C, dimensions (L x W x H): 158 x 86 x 86 mm, weight: 1 kg, protection class: I, protection type according to EN 60529: IP66,