QO load centers offer premium features by allowing QO breakers, ground arc fault interrupters arc fault interrupters and surge arresters to be installed insid QO load centers enable the use of a full complement of accessories. Systems can be single or three phase and have indoor and outdoor versions. Indoor enclosures are designed to rotate 18 degrees to accommodate top or bottom service entrance feed which saves expensive service cable. QO load centers feature plated copper bus, providing superior performance and durability. This single phase QO load center has fixed mains and is rated at 1 A at 12/24 VAC. This QO load center has a 1 kA breaking capacity. This system provides 8 spaces in a NEMA 3R enclosure. This 1 phase load center has 8 spaces and 8 circuits. This system provides 100A convertible main lugs in a NEMA 3R enclosure. This product is UL rated.