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Manufacturer Resources
Product Specs
- Country Of Origin:
- India (IN)United States (US)
- Outside Diameter:
- 3/4 in
- Product Group:
- Wire & Cable Management
- Product Type:
- Two-Bolt Connector
- Selling Unit Of Measure:
- each
- Standards:
- UL E9809
- Type2:
- Mechanical connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Material:
- Copper
Blackburn 2B500X – Frequently Asked Questions
1) What conductor size range does the Blackburn 2B500X two-bolt connector take?
The 2B500X is sized for 300 through 500 kcmil copper conductors, which is what the "300-500" in the part description refers to. Run a conductor outside that range and the bolts will not clamp it correctly, so match the kcmil on your cable jacket to that window before you order.
2) Is the Blackburn 2B500X connector copper only, or can I use it on aluminum conductors?
It is a copper mechanical connector, built for copper conductors. If your feeder is aluminum or you need a dual-rated AL/CU splice, this is the wrong body, look for a connector rated AL9CU instead.
3) What does "without spacer" mean on the Blackburn 2B500X, and when would I need the spacer version instead?
The 2B500X ships with no spacer, so both conductors seat directly against each other in the barrel. A spacer version is used when you are splicing two conductors of noticeably different diameters and need the smaller one shimmed up so the bolts bear evenly. Splicing like-for-like 300 to 500 kcmil copper, the no-spacer body is what you want.
4) Is the Blackburn 2B500X UL listed?
Yes. It carries UL file E9809 as a mechanical connector. That is the reference an inspector or a spec writer will ask for on a copper feeder splice.
5) How big is the Blackburn 2B500X body, and will it fit inside my pull box or gutter?
The connector measures 3/4 in outside diameter, plus whatever insulating tape or a cover adds. Add the bolt head clearance on top of that when you are laying out a crowded gutter or a tap in a pull box, since you need wrench access on both bolts after the conductors are seated.
6) Is the Blackburn 2B500X insulated, or do I have to cover it?
It is a bare copper mechanical connector body with no insulation. Splices made with it need to be re-insulated in the field with tape or a suitable insulating cover, or housed in an enclosure, to match the insulation level of the conductors you are joining.
7) Does the Blackburn 2B500X come as a single piece or a pair?
One piece, sold each. A straight splice on a three phase plus neutral run takes four of them, so count your conductors and order accordingly rather than assuming a kit.
8) What is the manufacturer part number for the Blackburn 300-500 kcmil two-bolt copper connector?
Blackburn 2B500X. That is the number to quote to a distributor for the copper two-bolt, no-spacer version covering 300 to 500 kcmil.
How fast can I get the Blackburn 2B500X 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 2B500X come with a warranty?
Absolutely. The Blackburn 2B500X 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 2B500X?
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 2B500X from ZenSupply?
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and
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