ISO/Link-DC®ï¸ insulating links are specially designed for use in the smelting industry or wherever high DC current is a threat, e.g., industrial welding. The high temperatures, high duty cycle and strong magnetic fields found in smelting environments were all taken into consideration during the development of this addition to the ISO/Link Series. By incorporating G-10 glass fiber dielectric, the ISO/Link-DC®ï¸ can withstand continuous temperature as high as 130°C. Each link is tested to 10,000 Volts DC and rated to 1,000 Volts DC. Factory rebuild is possible. Intended for interior use only. Available to working loads of 60 tons with a design safety factor of 5:1.