Square D EZ Meter-Pak main devices are available as main circuit breakers, main fusible switches, or main lug terminal boxes. EZM main lugs terminal boxesprovide connection points for metering configurations. This main lug terminal box connects one phase in, one phase out with a three wire configuration. It is rated for 120/240VAC and main rated current of 225A. It is suitable for underground and overhead service feed. This 225A terminal box has an isolated neutral that can't be bonded, so not suitable for use on the line side of service equipment. The compartment has three horizontal 800A rated busbars. The busbars come with Visi-Tite joint nuts for connections, eliminating the need for torque readings. It is compliant with UL standards and the steel enclosure has a rating of NEMA 3R.