B-Line Eaton series imperial cable tray and ladder, 6" Height, 27" Length, 30" Width, Series 2-5 vertical tee down, Aluminum, 24" Radius

It is a three-way aluminum fitting that carries a straight cable tray run and drops a branch vertically downward from it. The 6A-30-VT24 is built for 30 inch wide, 6 inch deep tray and turns the branch on a 24 inch radius, so conductors bend within their allowable radius rather than breaking over a sharp corner.

It mates to 30 inch wide tray with a 6 inch side rail depth, and it is Series 2-5 tray. Match all three of those against what is hung now. If your run is 6 inch deep but a different width (18, 24, 36), this fitting is the wrong one, you need the tee sized to that width.

Radius is chosen off the bending radius of the largest cable in the tray, not off the tray size. The 6A-30-VT24 gives a 24 inch radius, which suits large power conductors that cannot be tightened past that. If your fill is control or instrumentation cable with a tighter allowable bend, a shorter radius version of the same vertical tee down saves headroom and cost. Check the cable manufacturer's minimum bend radius first, then pick the fitting.

Aluminum. That keeps the piece light for overhead work and gives it inherent corrosion resistance without a coating to chip, which is why aluminum tray is common in water treatment, food plants and outdoor runs. It also means you cannot weld or hot-work it like steel tray, and your grounding scheme has to account for an aluminum tray system.

39.8 lb. It is a two-person lift at height in practice, mostly because of its bulk, it runs 27 inches along the straight and 30 inches across. Plan your trapeze or bracket support on both sides of the fitting before you set it.

It carries CSA certification, which is what an inspector on a Canadian project will look for on the tray system. Specify the same series and material throughout the run so the certification holds across the whole installation.

Direction of the branch. A vertical tee down, which is what the 6A-30-VT24 is, drops the branch below the plane of the main run. A tee up raises it above. Both use the same tray width and radius logic, so if your drop is heading toward equipment below the tray, this is the one, if you are climbing to a higher level, order the up version.

Allow 27 inches along the main run and 30 inches across it, with a 6 inch rail depth, and the 24 inch radius means the branch sweeps well below the main tray plane before it straightens out. Tight ceiling spaces and congested pipe racks are where a 24 inch radius fitting gets rejected at install, so check the vertical clearance under the run before you order.

Eaton B-Line part number 6A-30-VT24. That designation reads out as 6 inch depth, aluminum, 30 inch width, vertical tee down, 24 inch radius, which is a useful check that the fitting you are quoted matches the tray you have.