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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Group:
- Wire & Cable Management
- Product Type:
- Wire connectors
- Selling Unit Of Measure:
- each
- Type2:
- Wire connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
Blackburn E-4N-25 – Frequently Asked Questions
1) What wire sizes does the Blackburn E-4N-25 service entrance connector take?
The E-4N-25 is sized for 6 to 8 AWG conductors. If your service or feeder conductors fall outside that range, you need a different frame size in the series rather than forcing the wire into this one.
2) Is the Blackburn E-4N-25 connector rated for copper conductors or aluminum?
It is a copper (CU) service entrance connector, so use it on copper conductors. Running aluminum into a copper-only connector is a dissimilar metals problem; for aluminum or combination runs you want an AL/CU dual rated body instead.
3) How does the Blackburn E-4N-25 connector clamp the conductor?
It is a screw type (set screw) service entrance connector, so the conductor is inserted and the screw is torqued down onto it. No crimp tool or die set is needed, which is why electricians use these for service entrance and splice work in the field.
4) Is the Blackburn E-4N-25 sold individually or in a box?
It is sold each, so order one per termination point. On a three wire service with a neutral, count your terminations before ordering.
5) Where is the Blackburn E-4N-25 connector made?
Manufactured in the United States, which matters on federally funded and Buy American specified work where domestic origin has to be documented for electrical components.
How fast can I get the Blackburn E-4N-25 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 E-4N-25 come with a warranty?
Absolutely. The Blackburn E-4N-25 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 E-4N-25?
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 E-4N-25 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.