IECEx Zone 1, 2, 21 & 22 Ex db IIC Gb, Ex tb IIIC Db -20 to +55 deg CIP 66. Max Voltage: AC - 690 V/DC 440V. Current Rating: 50A AC/DC High impact resistant box, pillar/screw type terminal block up to 16 sq. mm available Epoxy coated marine-grade aluminium - stainless steel 304/316L available Small terminal boxes 7 LCS designed for hazardous areas Stainless steel hardware IECEx Zone 1, 2, 21 & 22 Ex db IIC Gb, Ex tb IIIC Db -20 to +55 deg CIP 66. Max Voltage: AC - 690 V/DC 440V. Current Rating: 50A AC/DC High impact resistant box, pillar/screw type terminal block up to 16 sq. mm available Epoxy coated marine-grade aluminium - stainless steel 304/316L available Small terminal boxes 7 LCS designed for hazardous areas Stainless steel hardware