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AL HTYPE COMP CONN 477-4/0 336-266
Manufacturer Resources
Product Specs
- Minimum Purchase:
- 50 units
- Connection Type:
- Compression
- Country Of Origin:
- Mexico (MX)
- Insulation Material:
- None
- Number Of Conductors:
- 2
- Product Group:
- Wire & Cable Management
- Product Type:
- H-Type Compression Tap Connector
- Selling Unit Of Measure:
- each
- Standards:
- RUS Accepted. Complies with ANSI C119.4 Specifications
- Temperature Range:
- up to 90 °C
- Type2:
- Wire connectors
- Department:
- Electrical
- Product Subgroup:
- Connectors
- Product Size:
- Length 3 inch
- Installation Category:
- None
Blackburn WR875 – Frequently Asked Questions
1) Will the Blackburn WR875 H-tap work on 477 MCM run cable with a 4/0 tap?
That's exactly the range it covers. The WR875 is an aluminum H-type compression tap connector rated for a 477 to 4/0 main and a 336 to 266 tap, so a 477 MCM run with a 4/0 tap sits at the top and bottom ends of the main conductor range. It joins two conductors per connector.
2) Is the WR875 a compression connector or a mechanical bolted tap?
Compression. The WR875 is crimped with a hydraulic or battery compression tool and a matching die, not tightened with a wrench like a bolted split-bolt or H-tap. Once it's crimped it's permanent, so conductor sizing has to be right before you press it. If you need a connection you can back off and re-make, a bolted tap is the type to look for instead.
3) Does the Blackburn WR875 meet ANSI C119.4 for underground and utility work?
Yes. The WR875 complies with ANSI C119.4 specifications and is RUS Accepted, which is the acceptance utilities and rural electric co-ops look for on connectors used in their distribution work. That's the pair of credentials a utility or municipal spec normally calls out for a compression tap.
4) Can I use the Blackburn WR875 aluminum H-tap on copper conductors?
The WR875 is an aluminum-bodied H-tap. Aluminum compression taps of this type are made for aluminum conductors and for aluminum-to-copper combinations when installed with the oxide inhibitor; a copper-to-copper connection is normally made with a copper compression tap instead. Match the connector body metal to the conductors you're actually joining.
5) What temperature is the WR875 H-tap rated for?
Up to 90 degrees C, which lines up with the 90 C insulation rating on the conductors most commonly landed on it, so the connector isn't the limiting element on a 90 C rated feeder. Note the connector itself ships bare with no insulation, so it needs to be taped, covered or made up inside an enclosure.
6) How long is the Blackburn WR875 H-tap body, and will it fit in my enclosure?
The WR875 measures 3 inches in length. Allow for that plus the crimp tool head clearance on either side when you're laying out taps in a pedestal, handhole or gutter, since a compression head needs room to close square on the body.
7) Can I use one WR875 to tap two conductors off a single run?
No. The WR875 is a two-conductor connector, one main and one tap. Two taps off the same run means two connectors, spaced far enough apart on the main that each crimp gets full die contact.
8) Is the WR875 sold individually or in a box?
Each. The WR875 is sold as a single connector, so quantity is one tap per conductor pair you're splicing. Order one per tap point rather than by the carton.
9) What is the manufacturer part number for the Blackburn aluminum H-tap 477-4/0 to 336-266?
Blackburn WR875 is the part number, and it's the aluminum H-type compression tap covering a 477 to 4/0 main with a 336 to 266 tap. It's made in Mexico.
How fast can I get the Blackburn WR875 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 WR875 come with a warranty?
Absolutely. The Blackburn WR875 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 WR875?
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