You may also like
AL PARAGRV CLAMP EXTRUDED 397-3/0
Manufacturer Resources
Product Specs
- Connection Type:
- Bolted
- Country Of Origin:
- Mexico (MX)
- Insulation Material:
- None
- Number Of Conductors:
- 2
- Product Group:
- Grounding & Bonding
- Product Type:
- Parallel-Groove Clamp
- Selling Unit Of Measure:
- each
- Type2:
- Wire or cable compression splice
- Department:
- Electrical
- Product Subgroup:
- Ground Clamps
- Product Size:
- Height 2-9/16 X Length 1-5/8 X Width 2-1/4 inch, Bolt 1/2 inch
- Installation Category:
- None
- Product Material:
- Aluminum
Blackburn PAE3921-9-2 – Frequently Asked Questions
1) What conductor sizes does the Blackburn PAE3921-9-2 parallel groove clamp take?
The PAE3921-9-2 is the 397 to 3/0 range clamp, so the main and tap conductors both need to fall in that window. It holds two conductors, one in each groove. Anything smaller than 3/0 or larger than 397 belongs on a different catalog number in the series.
2) Can I use an aluminum parallel groove clamp like the PAE3921-9-2 on copper conductors?
The PAE3921-9-2 body is extruded aluminum. Aluminum-bodied parallel groove clamps are made for aluminum-to-aluminum connections unless the manufacturer specifically rates the part as dual rated AL/CU. Nothing in the PAE3921-9-2 data designates a copper rating, so treat it as an aluminum conductor connector and use a dual rated or bronze clamp where copper is involved.
3) Is the PAE3921-9-2 a bolted clamp or a compression connector?
It is bolted. The PAE3921-9-2 uses a 1/2 inch bolt to draw the two grooved halves together on the conductors, so it installs with a wrench and no hydraulic tool or die set. That also means it can be loosened and re-made if a conductor has to be pulled or re-dressed, which a crimped splice cannot.
4) How much room do I need in the enclosure or on the rack for this parallel groove clamp?
Allow for a body measuring 2-9/16 inch height by 1-5/8 inch length by 2-1/4 inch width, plus wrench swing on the 1/2 inch bolt head. Worth checking before you commit to it inside a tight pull box or between close-spaced bus runs.
5) Does the PAE3921-9-2 come insulated or do I need to tape or boot the connection?
It ships bare. There is no insulation material on the clamp, so any covering the job requires, tape, a cover kit, or heat shrink, is a separate item. On outdoor or overhead aluminum work these are routinely left bare; inside an enclosure, follow whatever the spec on the drawing calls for.
6) Should I use a parallel groove clamp or a compression splice for an aluminum tap?
A parallel groove clamp like the PAE3921-9-2 runs the two conductors side by side in machined grooves and clamps them with a bolt, so it is the choice when you want a re-openable tap, have no crimp tool on site, or need to land a tap on an existing run without cutting it. A compression splice is permanent and makes a straight inline joint. The PAE3921-9-2 is catalogued for wire or cable splicing duty and takes two conductors.
7) Is the Blackburn PAE3921-9-2 sold individually or in a box?
Each. The selling unit is one clamp, so order the exact count of taps you have rather than a carton quantity. Manufacturer part number is PAE3921-9-2, made in Mexico.
How fast can I get the Blackburn PAE3921-9-2 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 PAE3921-9-2 come with a warranty?
Absolutely. The Blackburn PAE3921-9-2 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 PAE3921-9-2?
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 PAE3921-9-2 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.