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No2-No6 SERVICE WEDGE CLAMP,EA
Manufacturer Resources
Product Specs
- Connection Type:
- Tension
- Country Of Origin:
- Mexico (MX)
- Insulation Material:
- None
- Number Of Conductors:
- 1
- Product Group:
- Wire & Cable Management
- Product Type:
- Aluminum Service Wedge Clamp
- Selling Unit Of Measure:
- each
- Surface Finishing:
- Bare
- Type2:
- Cable gland connector
- Voltage Rating:
- 35 kV
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Size:
- Length 12-1/2 in X Depth 2-3/8 in
- Installation Category:
- Yes
- Product Material:
- Aluminum
Blackburn W621-1 – Frequently Asked Questions
1) What conductor sizes does the Blackburn W621-1 service wedge clamp take?
The W621-1 wedge clamp is sized for No. 2 through No. 6 conductor, and it holds one conductor per clamp. If your service drop or tap is larger than No. 2 or smaller than No. 6, this is the wrong clamp for the run.
2) What voltage is the Blackburn W621-1 wedge clamp rated for?
It carries a 35 kV rating, so it is a medium voltage service clamp, not a secondary or low voltage connector. The body is bare aluminum with no insulation supplied, so any covering or taping is on the installer.
3) Can I use an aluminum wedge clamp like the W621-1 on copper conductor?
The W621-1 body is aluminum with a bare finish, which is the standard construction for aluminum service and overhead work. Aluminum bodies used on copper need to be rated for that combination, so confirm the dual-rating on your spec before mixing metals on a 35 kV service.
4) How big is the Blackburn W621-1 clamp, and will it clear a crowded pole top?
It measures 12-1/2 inches in length by 2-3/8 inches in depth, so plan on about a foot of clear run along the conductor. On tight racks or close-spaced deadends, check that dimension against your available span before you climb.
5) How does a wedge clamp hold the conductor, and do I need a torque wrench?
The W621-1 is a tension type connection. The wedge is driven and holds by mechanical tension against the conductor rather than by a torqued setscrew or a compression die, so no crimp tool or torque value is involved in the grip itself.
6) Is the Blackburn W621-1 sold individually or in a box?
Each. The W621-1 ships as a single clamp, so order one per conductor termination you are making.
7) Where is the Blackburn W621-1 wedge clamp made? I have a country of origin requirement on this job.
Country of origin on the W621-1 is Mexico. Utility and government jobs with domestic sourcing language should check that against the contract before this one goes on the submittal.
How fast can I get the Blackburn W621-1 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 W621-1 come with a warranty?
Absolutely. The Blackburn W621-1 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 W621-1?
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 W621-1 from ZenSupply?
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and
rewards on
every order.
Our team is always ready to help you choose the right product for your project.