B-Line Eaton series imperial cable tray and ladder, 4" Height, 17.598" Length, 36" Width, Series 2-5 vertical outside bend, Aluminum, 30° Angle, 24" R

A vertical outside bend carries the tray over a rise, changing the elevation of the run while keeping the cables in the tray. The Eaton B-Line 4A-36-30VO24 is a Series 2-5 vertical outside bend at a 30 degree angle with a 24 inch radius, so it takes a straight run and turns it 30 degrees over an obstruction such as a beam or duct. If your run has to drop down and back rather than rise, you need the inside bend version instead.

The fitting itself measures 17.598 inches in length, so that is what you deduct from your straight sections when laying out the run. The 24 inch radius is what sets that sweep, and it is the figure to use when checking clearance above the obstruction you are bending over.

Yes, and it is the number to check first. The fitting sweeps on a 24 inch radius, so any cable in the tray follows at least that radius through the elevation change. If your cable manufacturer specifies a minimum bending radius larger than 24 inches, you need a larger-radius fitting rather than this one.

The 4A-36-30VO24 is the bend section itself. Splice plates, connection hardware, and the hangers or trapeze supports on either side of the fitting are ordered separately, so budget those into the same order if the run is new. Match the splice hardware to the 4 inch rail height of this fitting.

It carries a CE marking. That is the only certification held on record for this fitting, so if your project specification calls for a particular listing beyond CE, confirm it against the manufacturer's submittal for the series.