Electric heater bundles are an assembly of multiple heating elements welded to a flange and provided with an electrical enclosure. The heater is installed in a shell or a tank or a vessel and thermal energy is passed on to the process media through the principle of convection. The terminals are enclosed in a metallic terminal enclosure for protection of electrical connections. Telelec can design and supply electric heaters complete with shell and control panels, in accordance with the applicable national, international standards. Both safe area and Ex’d’ classified hazardous area products are available.