You may also like
AL 4 HOLE NEMA LUG DIE 350
Manufacturer Resources
Product Specs
- Connection Type:
- Compression
- Country Of Origin:
- United States (US)
- Insulation Material:
- None
- Product Group:
- Wire & Cable Management
- Product Type:
- Compression Lug Four Hole
- Selling Unit Of Measure:
- each
- Surface Finishing:
- Bare
- Type2:
- Wire connectors
- Wire Size:
- 336.4 to 350 kcmil266.8(26/7) ACSR AWG
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Size:
- 7-5/8 X 3 inches wide
- Installation Category:
- Bolt Size 1/2 in
Blackburn SAM 350-4 N – Frequently Asked Questions
1) What conductor size does the Blackburn SAM 350-4 N lug take?
The SAM 350-4 N is rated for 336.4 to 350 kcmil conductor, including 266.8 (26/7) ACSR. It is a compression lug, so the barrel is crimped onto the conductor with the matching die rather than bolted. If your feeder is smaller than 336.4 kcmil, this barrel will not compress correctly and you need the lug sized for that conductor.
2) What bolt size and hole pattern does this four hole NEMA lug use?
Four bolt holes drilled for 1/2 inch hardware on the NEMA pad spacing. The pad measures 7-5/8 by 3 inches. Check that your bus or breaker pad has four 1/2 inch tapped holes or through-holes on NEMA centers before ordering; a two-hole pad needs a two-hole lug instead.
3) Do I need a special crimp die for this Blackburn lug?
Yes. The barrel is set up for the 350 die, which is the index called out on the connector itself. Use a hydraulic compression tool with that die index; crimping with an undersized or oversized die gives a connection that will not hold the pull-out or resistance values the lug was designed around.
4) Is the SAM 350-4 N an aluminum lug, and can I use it on copper conductor?
It is an aluminum-bodied NEMA lug with a bare, uninsulated finish. The listed conductor range covers aluminum sizes including 266.8 (26/7) ACSR through 350 kcmil. For a copper-only run, specify a lug listed for copper conductor in the same kcmil range.
5) Is this lug insulated, or do I have to tape or boot it after crimping?
Bare aluminum, no insulation on the body. In an enclosure or anywhere the terminal needs covering, plan on a separate heat-shrink boot or insulating tape as a field-applied step. Nothing of that kind ships with the lug.
6) Will a 7-5/8 inch lug fit inside my gutter or termination compartment?
Overall size is 7-5/8 by 3 inches, so allow at least that much straight-line room off the pad plus bending radius for 350 kcmil conductor behind it. In tight pull boxes that footprint is what usually forces the change to a different termination layout, so measure the compartment depth before committing.
7) How is the SAM 350-4 N sold, individually or in packs?
Sold each, so order one per termination. A three-phase plus neutral landing at 350 kcmil needs four, and you also need the bolts, nuts, and washers for the sixteen 1/2 inch holes, which are not part of the lug.
8) Is the Blackburn SAM 350-4 N made in the USA for a Buy American job?
Country of origin is the United States, which is what a federally funded or Buy American specified project will ask for on submittal. Order by manufacturer part number SAM 350-4 N.
How fast can I get the Blackburn SAM 350-4 N 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 SAM 350-4 N come with a warranty?
Absolutely. The Blackburn SAM 350-4 N 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 SAM 350-4 N?
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 SAM 350-4 N 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.