Cable connection: 2 x Pg 13.5. Cable diameter 6 - 14 mm. Enclosure: IP 66 to IEC 529, versions with ext. reset: IP 54. Ambient temperature: –20 - +65°C. Approvals: CE marked, according to EN 60947-4/-5, CE marked acc. to PED 97/23/EC category IV, safety equipment: RTE6AEW, RTE6AEB, RTE6AES, CCC, China Compulsory Certificate. Contact material: Gold plated AgCdO. Contact system: SPDT. Contact load: RT-E must be used with reliable means of limiting voltage and current to prevent sparks between contact surfaces. This could be zener diodes or EX barriers.