B-Line Eaton series imperial cable tray and ladder, 4" Height, 41.25" Length, 30" Width, Series 2-5 horizontal bend, Aluminum, 45° Angle, 36" Radius

Yes, provided your straight sections are the same Series 2-5 aluminum tray at 30 inch inside width and 4 inch loading depth. The 4A-30-45HB36 is built to those same dimensions, so the side rails line up rail-to-rail with matching straight sections. Mixing it onto a tray of a different width or a different rail height means the splice plates will not land flat.

Plan for a 36 inch inside radius on the turn, and allow 41.25 inches of overall length for the fitting itself. On a 30 inch wide tray that 36 inch radius turn sweeps a wide footprint, so check the fitting clears ductwork, columns and pipe before you set your trapeze supports. The 45 degree angle means it changes direction by half of a square corner, which is what you want when the run is dodging an obstruction rather than turning a corner.

Radius is chosen off the cable, not the tray. A 36 inch radius gives large power and fiber cable a gentle sweep through the turn, which is what keeps you inside the cable maker's minimum bend radius. If the run carries only small control or instrument cable, a shorter radius fitting turns in less space. Go the other way and undersize the radius on heavy feeders and you risk damaging conductor insulation during the pull.

It is aluminum. That matters on outdoor runs, wash-down areas, water treatment and coastal sites, where aluminum holds up without the coating maintenance galvanized steel needs. It is also the lighter option to handle overhead. Keep the whole run in one material where you can, since mixing aluminum fittings into a steel tray run introduces dissimilar metal contact at the splice.

It is CSA certified, which is the listing Canadian electrical inspectors look for on cable tray. Note the part number itself: 4A-30-45HB36 is the number to put on the submittal and the purchase order.

A horizontal bend turns the run left or right while the tray stays flat, which is what the 45 degree, 36 inch radius 4A-30-45HB36 does. A vertical elbow turns the run up or down, typically where the tray rises over an obstruction or drops to equipment. They are not interchangeable, so take off your route in plan and elevation separately and order a fitting for each change of direction.