Burndy BIBS3504DB Unitap Direc...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$90.61
Burndy BIBS3504DB Unitap Direct Burial Submersible Multi-Tap Connector

Burndy BIBS3504DB Unitap Direct Burial Submersible Multi-Tap Connector

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Model: BIBS3504DB

In Stock (leaves warehouse same day if ordered before 3pm ET)

$90.61
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Burndy BIBS3504DB Unitap Direct Burial Submersible Multi-Tap Connector

The Burndy BIBS3504DB is a Unitap™ direct burial, submersible multi-tap connector engineered for underground and wet-location conductor splicing. This single-sided, 4-port connector accepts dual-rated aluminum and copper conductors ranging from 12 AWG to 350 kcmil, and it is protected by an EPDM rubber covering with a pre-installed oxide inhibitor for long-term corrosion resistance in demanding underground and submersible environments.

Key Features

  • Conductor Range: Accepts 12 AWG to 350 kcmil dual-rated aluminum and copper conductors, covering a wide range of job-site wire sizes in a single connector.
  • Durable Construction: Copper connector body wrapped in a protective EPDM rubber covering that seals out moisture for direct burial and submersible use.
  • Multi-Tap Design: Single-sided, 4-port Unitap™ body lets one main conductor tap up to four branch conductors from a single connection point.
  • Direct Burial & Submersible Rated: Built to remain reliable below grade and underwater, where standard splice connectors are not suitable.
  • Pre-Installed Oxide Inhibitor: Ships with oxide inhibitor already applied at the factory to protect aluminum-to-copper connections from corrosion over time.
  • Color: Black EPDM rubber housing for straightforward visual identification in the field.

Technical Specifications

  • Conductor Range: 12-AWG
  • Ports: 4
  • Product Material: Copper
  • Direct Burial: Yes
  • Series: Unitap
  • Connector Type: Multi Tap
  • Conductor - AL Str Size Range: 12 AWG - 350 kcmil
  • Conductor - Copper Str Size Range: 12 AWG - 350 kcmil
  • Product Type: Run/Tap
  • Trade Name: UNITAP™

Typical Applications

  • Direct Burial Underground Electrical Connections
  • Submersible and Wet-Location Conductor Splicing
  • Utility and Municipal Power Distribution
  • Underground Conductor Tapping and Branching
  • Aluminum-to-Copper Conductor Transitions

Why Burndy?

Burndy engineers the Unitap™ series for demanding underground and submersible electrical connections, pairing dual-rated Al/Cu conductor compatibility with an EPDM rubber covering and a pre-installed oxide inhibitor for lasting corrosion protection. For electricians and utility crews who need a dependable direct burial multi-tap connector, the BIBS3504DB delivers consistent, code-conscious performance below grade and in wet locations.

Manufacturer Resources

Spec Sheet

Product Specs

list_batch:
BURNDY-20260915
Wire Size:
12-AWG
Ports:
4
Direct Burial:
Yes
Series:
Unitap
Connector Type:
Multi Tap
Conductor - AL Str Size Range:
12 AWG - 350 kcmil
Conductor - Copper Str Size Range:
12 AWG - 350 kcmil
Product Type:
Run/Tap
Trade Name:
UNITAP™
Product Material:
Copper
Department:
Electrical
Product Subgroup:
Lugs & Terminals
Product Group:
Wire Connectors & Terminals

Burndy BIBS3504DB – Frequently Asked Questions

1) Can the Burndy BIBS3504DB be buried underground or used in a wet pit?
Yes. The BIBS3504DB Unitap connector is rated for direct burial and submersible service. The copper body is wrapped in an EPDM rubber covering that seals out moisture, so it can sit below grade or underwater where an ordinary splice connector would fail. Typical use is underground distribution taps, handholes and flooded vaults.
2) Will the BIBS3504DB take both aluminum and copper conductors in the same connector?
It's dual rated. Stranded aluminum from 12 AWG to 350 kcmil and stranded copper from 12 AWG to 350 kcmil both land in it, and an oxide inhibitor is already applied at the factory, which is what makes the aluminum-to-copper transition safe to leave buried. You don't need to add compound before you make up the joint.
3) How many conductors does the Burndy BIBS3504DB Unitap connector accept?
Four ports, all on one side. That lets a single main run feed up to four branch taps from one connection point. If you need ports entering from both sides of the body, a single-sided 4-port Unitap is the wrong configuration for that layout.
4) Can I run a 350 kcmil feeder and tap smaller branch wires off it with one BIBS3504DB?
That is exactly the run/tap use it's built for. Any port accepts stranded Al or Cu between 12 AWG and 350 kcmil, so a 350 kcmil main and three smaller branches can all land in the same 4-port body. Each port is tightened independently, so mixing sizes across ports is normal.
5) Will the BIBS3504DB work for a 500 kcmil service conductor?
No. The largest conductor any port accepts is 350 kcmil, aluminum or copper. For a 500 kcmil main you need a larger-range Unitap or a separate connector sized for that conductor. Below 12 AWG is also outside the range.
6) Do I need to add tape or a heat shrink sleeve over a Unitap BIBS3504DB after installing it?
No separate insulating kit is needed. The connector ships with its black EPDM rubber covering already on the copper body, and that covering is what provides the direct burial and submersible protection. Compare that to a bare mechanical lug or a bare compression splice, which you would have to insulate and seal yourself before backfilling.
7) What is the difference between a Unitap multi-tap connector and a compression splice for an underground tap?
A compression splice is a permanent one-to-one joint that needs a die and a crimp tool, and it has to be insulated afterward. The Unitap BIBS3504DB is a mechanical multi-tap: four ports in one insulated body, tightened with a hex key or driver, so you can pick up several branch circuits at one point and re-enter the connection later. Pick the Unitap when you are branching underground; pick a compression splice when you only need to join two conductors end to end.
8) What is the exact part number and series for this Burndy direct burial tap connector?
Burndy BIBS3504DB, part of the UNITAP series. It's the single-sided 4-port direct burial submersible version of the family, dual rated Al/Cu 12 AWG to 350 kcmil. Burndy publishes a spec sheet for it at hubbellcdn.com under BRDY-BIBS3504DB-SPEC-EN.
How fast can I get the Burndy BIBS3504DB 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 Burndy BIBS3504DB come with a warranty?
Absolutely. The Burndy BIBS3504DB 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 Burndy BIBS3504DB?
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 Burndy BIBS3504DB from ZenSupply?
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