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EZ Meter Pak devices are the industry choice for providing a better solution for multi unit construction needs. EZM main devices are available as main circuit breakers, as main fusible switches or as main lug terminal boxes. The various EZ Meter Pak devices can have main ratings from 225 to 2000 A maximum depending on the version. This main fusible switch can be feed from underground service only. This EZ Meter Pak is designed for 3 phase 4W in and out. This main fusible switch requires 300 VAC Class T fuses, which must be ordered separately. The rated operational voltage is 208Y/120 VAC or 120/240 VAC. The unit has an aluminum horizontal cross bus bar. The main is rated 1200 A. The electrical lug connections on the line side will accept four 3/0 to 500 kcmil copper or aluminum wires. This unit has a NEMA 3R surface mounting enclosure that is 65.30 inches tall, 23.69 inches wide and 13.69 inches deep. This main fusible switch unit is UL Listed.