I-Line Busway offers a complete line of compatible, sandwich-type feeder and plug-in busway lengths and fittings. I-Line plug-in busway has options from 225A to 600A with aluminum or copper conductors. I-Line busway is constructed with three pole and four pole full neutral configurations for system voltages to 600 volts. This busway system is rated to allow 100% of the current to flow continuously. This fusible plug-in unit is 1200A, 600VAC max, 4 pole, and 3 fuse + G. This unit uses a bolt on connection and horizontal mount. This plug-in unit uses L fuses. I-Line busway is UL listed and CSA certified.