Square D? EZ Meter-Pak? devices are the industry choice, providing better solutions to meet more multi-unit construction needs than any other line in the industry. EZM branch units are supplied with meter sockets and provisions for mounting tenant circuit breakers. The various EZ Meter Pak devices can have main ratings from 225 to 2000 A maximum depending on the version. Residential and commercial branches are available in ring or ringless type. This branch unit is ringless and rated 400A. It has 1 five jaw socket for use. The system voltage is 120/240 VAC and has a lever bypass. It includes a 1200 A copper busbar. It is compliant with UL standards and the steel enclosure has a rating of NEMA 3R.