Abb offers advance medium voltage, metal-clad switchgear is the first switchgear with a completely innovative modular, bolted design introduced in the ansi market for more than a decade. Abb developed advance with the ansi user in mind. Advance metal-clad switchgear greatly improves maintenance simplicity. Additionally, advance supports the latest customer requirements for increased worker safety, enhanced reliability and ease of use. Flexibility of engineering is based on a truly modular concept, with many product variations, configurations and options.