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AL HTYPE COMP CONN 397-4/0 397-4/0
Manufacturer Resources
Product Specs
- Connection Type:
- Compression
- Country Of Origin:
- Mexico (MX)
- Insulation Material:
- None
- Number Of Conductors:
- 2
- Product Group:
- Wire Connectors & Terminals
- 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:
- Wire Connectors
- Product Size:
- Length 3 inch
- Installation Category:
- None
Blackburn WR775 – Frequently Asked Questions
1) What conductor sizes does the Blackburn WR775 H-tap connector accept on the run and the tap?
The WR775 is sized 397-4/0 on the run and 397-4/0 on the tap, so both sides take aluminum conductors in that range. It is a two-conductor H-type connector, meaning one run and one tap per fitting.
2) Is the Blackburn WR775 a bolted connector or does it need a compression tool?
Compression only. The WR775 is crimped with a hydraulic compression tool and die, not bolted, so there is nothing to re-torque after install and the tool and die set has to be on the truck before you start.
3) Does the Blackburn WR775 meet utility specs for a secondary tap?
It is RUS Accepted and complies with ANSI C119.4, which is the connector standard utilities and electrical inspectors call out for underground and secondary distribution taps. RUS acceptance matters if you are working to a rural utility or co-op spec.
4) Is the WR775 H-tap insulated, or do I have to cover the splice myself?
Bare metal, no insulation on the connector. You supply the cover, so plan on a heat shrink sleeve, cold shrink, or tape build-up rated for the circuit voltage, or house the tap in an enclosure.
5) Can I use the WR775 aluminum H-tap on a 90 C rated cable run?
Yes. The WR775 is rated for service up to 90 C, which covers standard 90 C rated building wire and URD cable. Match the connector rating to the lowest-rated component in the splice as usual.
6) How much room do I need in the pedestal or handhole for a WR775 tap?
The connector body is 3 inches long, plus the bend radius on the run and tap conductors and whatever insulating cover you add over it. In tight secondary pedestals that 3 inch barrel plus shrink tube is the dimension to check.
7) Can the WR775 aluminum H-tap be used on copper conductors?
The WR775 is an aluminum-bodied connector sized for aluminum conductors 397 through 4/0. For copper runs or a copper-to-aluminum tap, use a connector specifically marked for that combination rather than this one.
8) Is the Blackburn WR775 sold individually or in a bag?
Sold each, one connector per unit, so you can order the exact count for the number of taps on the job.
9) What is the manufacturer part number for this Blackburn H-type compression tap, and where is it made?
Part number WR775, made in Mexico. That MPN is what to quote when matching an existing utility or contractor spec.
How fast can I get the Blackburn WR775 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 WR775 come with a warranty?
Absolutely. The Blackburn WR775 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 WR775?
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 WR775 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.