Show fabrication and installation details for enclosed bus assemblies. Designate components and accessories, including clamps, brackets, hanger rods, connectors, straight lengths, and fittings. Sustainable production: Control cabinets are made entirely from green steel, beginning as 100% scrap, which is melted in an electric arc furnace and produced with renewable wind energy. Automated engineering: Engineering data for all components is available online in neutral data formats for your. IEC 61439 is a standard developed by the International Electrotechnical Commission (IEC) that covers design verification for low-voltage electrical products and assemblies. The IEC 61439. I agree that Rittal BmbH & Co. KG may process the personal data that I have provided above in order to send me information about system solutions relating to enclosures, power distribution, climate control and IT for marketing purposes. I have read the data privacy policy and agree that Rittal GmbH. Power-Zone™ metal-enclosed, non-segregated phase medium and low voltage bus systems are custom-designed and manufactured. GRL's Low-Voltage Enclosed. The purpose of this specification section is to clarify bus assembly (busway, busbar, busduct, etc) requirements across our facilities. For flexibility and compatibility, we've standardized to two separate manufacturers' depending on the building's location. Buildings in Boulder shall use Legrand's.