B-Line Eaton series imperial cable tray and ladder, 4" Height, 51.000" Length, 12" Width, Series 2-5 vertical outside bend, Aluminum, 90° Angle, 48" R

A vertical outside bend carries the tray run over an obstruction or up a wall, turning the run 90 degrees around the outside of the curve so the cables ride on the convex side. Eaton B-Line part 4A-12-90VO48 is the aluminum version for a 12 inch wide, 4 inch deep Series 2-5 tray, formed on a 48 inch radius. If your run needs to turn down and in rather than up and over, you want the inside bend instead, not this fitting.

Bend radius sets how sharply the cable is forced to flex. A 48 inch radius gives a long, gentle sweep, which is what you want for large-diameter power feeders or fiber with a big minimum bend radius. Tighter radius fittings save space but crowd the cable. The 4A-12-90VO48 is the 48 inch radius option for 12 inch wide, 4 inch deep Series 2-5 aluminum tray.

Aluminum. It weighs 16.3 lb for a 12 inch wide, 51 inch long fitting, which is light enough to lift and set on hangers without a second crew member, and aluminum is the usual pick where corrosion is a concern or where run weight on the structure matters. If your spec calls for hot dip galvanized or stainless steel tray, this fitting will not match it.

The catalog record for this fitting covers the bend itself, at 16.3 lb, 12 inch width and 4 inch rail depth. Splice plates and hardware are ordered as separate line items in the Series 2-5 line, so add them to the order along with your hangers and supports.

Eaton B-Line 4A-12-90VO48. Reading the number: 4A is the 4 inch aluminum rail, 12 is the tray width, 90VO is the 90 degree vertical outside bend, and 48 is the bend radius in inches.

It is CE marked. That is the only marking carried on the 4A-12-90VO48 record, so if your submittal requires a specific listing beyond that, verify against the manufacturer submittal for the Series 2-5 line.