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Manufacturer Resources
Product Specs
- Country Of Origin:
- United States (US)
- Product Group:
- Wire & Cable Management
- Product Type:
- Bus Connector
- Selling Unit Of Measure:
- each
- Type2:
- Mechanical connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Material:
- Aluminum
Blackburn UPC33SL – Frequently Asked Questions
1) What wire range does the Blackburn UPC33SL insulated power distribution block accept?
The UPC33SL is built for conductors from 4 AWG through 500 kcmil. That covers the feeder and service sizes most commonly landed in a panel or gutter tap, and it applies across all three terminals.
2) How many conductors can I land on a Blackburn UPC33SL bus connector?
Three terminals with three ports total on the UPC33SL. It is a mechanical set screw connector, so each port takes one conductor clamped under a screw, which makes it a three-way tap or splice rather than a multi-tap block with separate line and load sides.
3) Is the Blackburn UPC33SL connector insulated, or do I need to tape and boot it?
It ships insulated. The UPC33SL comes as an insulated bus connector, so you are not building up your own tape or shrink cover over a bare block after the terminations are torqued.
4) Can I use the Blackburn UPC33SL on both copper and aluminum conductors?
The connector body is aluminum, which is the standard construction for a dual-rated mechanical lug. Aluminum bodied set screw connectors are widely used on aluminum feeders as well as copper, but check the rating marked on the part itself before landing a mixed-metal connection.
5) Is the UPC33SL a compression connector or a set screw type?
Mechanical, not compression. That means no crimp tool, no dies, and no hydraulic head on the job. You strip the conductor, seat it in the port, and torque the screw, which is why these get used for field taps and retrofits where a crimp tool is not practical.
6) Is the Blackburn UPC33SL made in the USA? We have a domestic content requirement on this project.
Country of origin on the UPC33SL is the United States. Institutional and government buyers working to a domestic sourcing clause can use that, though the governing spec for your contract should be confirmed against the actual clause language.
7) Do Blackburn UPC33SL bus connectors come in packs or singly?
Sold each. One UPC33SL per unit, so order the count you need for the job rather than working around a carton quantity.
How fast can I get the Blackburn UPC33SL 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 UPC33SL come with a warranty?
Absolutely. The Blackburn UPC33SL 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 UPC33SL?
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 UPC33SL 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.