B-Line Eaton series imperial cable tray and ladder, 4" Height, 25.053" Length, 30" Width, Series 2-5 vertical inside bend, Aluminum, 45° Angle, 24" Ra

A vertical inside bend carries the tray run up or down at an angle while keeping the cables on the inside (concave) face of the turn. Model 4A-30-45VI24 makes that transition at 45 degrees on a 24 inch radius, so cables bend gradually rather than breaking over a sharp corner. Use it where a ladder run has to climb a wall or drop below an obstruction and the cable bundle sits on the inside of the curve. If the cables would ride the outside of the turn instead, you want the vertical outside bend of the same width and radius.

Allow about 25.053 inches of length for the fitting itself, measured along its footprint, and account for the 24 inch bend radius when you lay out the vertical change in elevation. That 24 inch radius is the big one for planning: it sets how far the run travels horizontally while the tray climbs or drops. Tight ceiling voids and short wall climbs are where crews get caught, so lay the radius out on the drawing before you hang the trapeze supports.

The fitting is formed on a 24 inch radius, which is the widest of the common B-Line fitting radii and is the one specified when large diameter power cable has to hold a generous training radius through the turn. If your cable schedule calls for a minimum bending radius above 24 inches, this fitting will not satisfy it and the run needs a different transition method. For control and instrumentation cable, 24 inches is more than adequate.

It is UL Classified. That is the designation B-Line tray and fittings carry for use as an equipment grounding conductor and for the tray system classification, and it is what a spec reviewer or inspector on an institutional job will look for on the submittal.

Order Eaton B-Line part number 4A-30-45VI24. Reading it out: 4 inch rail, aluminum, 30 inch width, 45 degree vertical inside bend, 24 inch radius. If you need the same turn going the other direction, the vertical outside bend is the companion fitting; same width and radius, different cable path.

Splice connectors are ordered separately from the fitting on B-Line ladder tray. Plan on a set of splice plates and hardware for each end where the bend meets a straight section, matched to the Series 2-5 aluminum tray you are running. Count two joints per fitting when you build the material list.

Aluminum construction keeps the weight down, this 30 inch wide bend is 6.8 pounds, which matters when a two man crew is setting fittings overhead on a 30 inch wide run. Aluminum also holds up in damp and corrosive environments without relying on a coating, so it is the usual pick for exterior, wash down and coastal work. Steel tray is the choice where you need higher load capacity per span or where the project spec calls it out.