B-Line Eaton series imperial c...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$528.51
B-Line Eaton series imperial cable tray and ladder, 4" Height, 18.44" Length, 30" Width, 30" and 12" Tray widths, Series 2-5 left reducer, Aluminum, 1

B-Line Eaton series imperial cable tray and ladder, 4" Height, 18.44" Length, 30" Width, 30" and 12" Tray widths, Series 2-5 left reducer, Aluminum, 1

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Model: 4A-30-LR12
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$528.51
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Eaton B-Line series imperial cable tray and ladder, 4" Height, 18.44" Length, 30" Width, 30" and 12" Tray widths, Series 2-5 left reducer, Aluminum, 12" Radius

Manufacturer Resources

Product Specs

Certifications:
CSA
Product Height:
4 in
Product Length Depth:
18.44 in
Product Weight:
5.5 lb
Product Width:
30 in
Radius:
12 in
Special Features:
30" & 12" Tray widths
Department:
Electrical
Product Type:
Series 2-5 left reducer
Product Details:
Series 2-5 left reducer
Product Material:
Aluminum

B-LINE 4A-30-LR12 – Frequently Asked Questions

1) What does the B-Line 4A-30-LR12 cable tray reducer actually do in a tray run?
It's a left-hand reducer fitting that steps a 30 inch wide tray down to a 12 inch wide tray, with the reduction taken on the left side so one side rail stays in line. The 4A-30-LR12 is 4 inches high, matching a 4 inch loading depth tray, and it measures 18.44 inches along the run. Use it where a main feeder tray drops to a smaller branch run.
2) Is the left reducer the same part as the right reducer, just flipped?
No, they are separate parts. On a left reducer the width comes off the left side of the run as you face the direction of travel, so the right side rail stays continuous. If the reduction has to happen on the opposite side, or centered, you need the right-hand or straight reducer instead. Getting the hand wrong throws the branch tray off its intended centerline.
3) What is the 12 inch radius on this B-Line reducer, and does it affect my cable bend radius compliance?
The fitting is built on a 12 inch radius, so the transition curve carries a 12 inch inside bend rather than a sharp corner. That matters because cable manufacturers specify a minimum bending radius, and running large conductors through a reducer with a tighter curve risks damaging insulation. Check your cable's stated minimum bend radius against the 12 inch figure before you spec it.
4) Is this cable tray reducer aluminum or steel, and how much does it weigh?
Aluminum, and it weighs 5.5 lb. That keeps it light for overhead work by a single installer and gives you corrosion resistance for damp or outdoor-adjacent runs where a painted steel fitting would need coating maintenance. If your run is galvanized steel tray, match the material rather than mixing, both for the bolted connection and to avoid dissimilar metal issues.
5) How much space do I need to leave in the run for the 30 to 12 inch reducer?
Allow 18.44 inches along the run for the fitting itself, and plan support on both sides of the transition. Overall the part measures 4 x 18.44 x 30 inches, the 30 inch figure being the wide end. Tight ceiling spaces and congested trapeze areas are where this length catches people out, so lay it out before cutting the straight sections.
6) Does the 4A-30-LR12 reducer come with splice plates and hardware?
The part supplied is the reducer fitting itself. Splice plates, connection hardware, and any hangers or trapeze supports for the transition are ordered separately and need to match the series and material of the tray you are joining to.
How fast can I get the B-LINE 4A-30-LR12 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the B-LINE 4A-30-LR12 come with a warranty?
Absolutely. The B-LINE 4A-30-LR12 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the B-LINE 4A-30-LR12?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the B-LINE 4A-30-LR12 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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