Square D EZ Meter-Pak branch meter compartmentsprovide a compact footprint for multi unit construction applications. This branch unit supplies three phases in, one phase out with a four wire configuration. It is rated for 208Y/120VAC and 125A. The meter socket compartment has three ringless, five jaw meter sockets with a horn bypass without jaw release. The compartment has four horizontal 1200A rated busbars with copper vertical connectors. The busbars come with Visi-Tite joint nuts for connections, eliminating the need for torque readings. It is compatible with 40A to 125A two-pole plug-on QO circuit breakers. It is compliant with UL standards and the steel enclosure has a rating of NEMA 3R.