A box‑type substation, also known as a prefabricated substation, is a factory‑prefabricated compact indoor and outdoor power distribution equipment. It integrates high‑voltage switchgear, distribution transformers and low‑voltage distribution devices according to a specific wiring scheme. Functions including transformer voltage reduction and low‑voltage power distribution are organically combined and enclosed inside a movable, fully‑enclosed steel structure cabinet. The cabinet features moisture‑proof, rust‑proof, dust‑proof, rat‑proof, fire‑proof, anti‑theft and heat‑insulating properties.

As a new‑generation substation developed after civil‑construction substations, it is especially suitable for urban power grid construction and renovation. Widely applied in mines, industrial enterprises, oil‑gas fields and wind power stations, it replaces traditional civil‑construction power distribution rooms and distribution stations, serving as a new complete set of power transformation and distribution equipment.