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Manufacturer Resources
Product Specs
- Country Of Origin:
- India (IN)
- Product Group:
- Wire & Cable Management
- Product Type:
- Copper Connectors
- Replacement Product Id New :
- 7TAH006040R0034
- Rohs Date:
- 9AKK108466A3880
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Type2:
- Mechanical connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Material:
- Copper
Blackburn L400H – Frequently Asked Questions
1) What conductor size range does the Blackburn L400H lug accept?
The L400H is a one-conductor mechanical lug rated for 4/0 stranded through 500 kcmil copper. If your feeder is smaller than 4/0 or larger than 500 kcmil, this is the wrong lug body and you need a different range.
2) Is the Blackburn L400H a one-hole or two-hole mount lug?
Single hole mount, one conductor. Where a bus or equipment pad is drilled for a two-hole NEMA pattern, or where vibration or short circuit forces call for two-hole landing, this one-hole body is not the part to use.
3) Can the Blackburn L400H be used on aluminum conductors, or copper only?
Copper only. The L400H is a copper-bodied connector, and the conductor range is called out as copper. For aluminum or a mixed AL/CU install you want a dual-rated AL9CU connector instead.
4) Is the L400H a mechanical set screw lug or a compression lug?
Mechanical. The L400H tightens onto the conductor with an Allen hex socket set screw, so it installs with a hex key rather than a hydraulic crimper and dies. That makes it the practical choice for field terminations and panel changeouts where you don't want to haul crimp tooling.
5) What tool do I need to install the L400H lug?
A hex key (Allen wrench) sized to the connector's socket set screw. No crimping tool, no dies. Torque the screw to the value stamped or printed on the connector body for the conductor size you are landing.
6) Is the Blackburn L400H sold individually or in a box quantity?
Sold each, as a single lug. Order one per conductor you are terminating, so a three-phase plus neutral landing takes four.
7) Has the Blackburn L400H been superseded by a newer part number?
There is a replacement product identifier on record for the L400H, 7TAH006040R0034. If you are standardizing a spec or a stocking list, reference that number alongside the L400H catalog number so either one gets picked correctly.
How fast can I get the Blackburn L400H 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 Blackburn L400H come with a warranty?
Absolutely. The Blackburn L400H 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 Blackburn L400H?
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 Blackburn L400H 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.