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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 2-13/16 X Length 3-1/2 X Width 3-7/64 inch, Bolt 1/2 inch
- Installation Category:
- None
- Product Material:
- Aluminum
Blackburn PAE9939-79 – Frequently Asked Questions
1) What is the Blackburn PAE9939-79 parallel groove clamp used for?
It's an aluminum parallel-groove clamp that joins two conductors running side by side, bolted rather than crimped or welded. Blackburn lists it as a wire or cable compression splice for grounding and bonding work, and it takes two conductors, one in each groove. Typical use is tapping or splicing aluminum grounding/bonding conductors where a mechanical, re-openable connection is wanted instead of an exothermic weld.
2) Can I use an aluminum parallel groove clamp on copper conductors?
The PAE9939-79 body is aluminum. Aluminum-bodied clamps are intended for aluminum conductor connections; putting bare copper directly against aluminum in an outdoor or damp location invites galvanic corrosion at the joint. For copper-to-copper or copper-to-aluminum transitions, use a clamp rated and marked for those combinations (bimetallic or a copper-alloy body). Blackburn does not rate this one as a copper connector.
3) Is this a bolted clamp or does it need a crimp tool?
Bolted. The PAE9939-79 tightens down with its 1/2 inch bolt, so no hydraulic crimper or compression die set is needed, and the joint can be opened again for inspection or re-termination. That's the practical difference from a compression sleeve, which is a one-shot connection.
4) What part number should I order to match an existing Blackburn parallel groove clamp on site?
The manufacturer part number is PAE9939-79, a single-model item with no finish or size options to choose between. If the clamps already installed are stamped PAE9939-79, this is the same part.
5) Does the Blackburn PAE9939-79 come with insulation or a cover?
No insulating boot or cover. Blackburn lists no insulation material on this clamp, so it's a bare metal connection. If the splice needs to be insulated or protected, that gets handled separately with tape, a mastic wrap, or a cover you supply.
6) Is the PAE9939-79 sold individually or in a box?
Each. One clamp per selling unit, so order the count you need for the job rather than a carton quantity. It's manufactured in Mexico.
How fast can I get the Blackburn PAE9939-79 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 PAE9939-79 come with a warranty?
Absolutely. The Blackburn PAE9939-79 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 PAE9939-79?
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