Ex plug for zone 2, 16 A, 4-pin, 600-690 V, 5 h, cable entries: 1, polyamide, cable entries/housing holes: Ø 8 - 21 mm, housing material: polyamide, rated voltage: 690 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): 187 x Ø 76.5 mm, weight: 0.7 kg, protection class: I, protection type according to EN 60529: IP66,