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. These busways are constructed in three-pole and four-pole neutral configurations for system voltages of 600 volts and are rated to allow 100% of the current to flow. This sway brace collar is rated 225A to 5000A, that is ideal for commercial or industrial applications. As an accessory, it is designed for use when only one side of the busway is heavily loaded with tap-off units or when other factors could cause possible swaying of the busway. This sway brace collar meets the UL 857 standard, the CSA C22.2 No 27 standard and the IEC 61439-6 standard.