Burndy BIBS3503DB Direct Burial Submersible Multi-Tap Connector, 3-Conductor Al/Cu

Burndy BIBS3503DB Direct Burial Submersible Multi-Tap Connector, 3-Conductor Al/Cu

The Burndy BIBS3503DB is a direct burial, submersible, dual-rated Al/Cu connector built for demanding underground and wet-location electrical work. This 3-conductor, single-sided multi-tap connector accepts a wide 12 AWG-350 kcmil conductor range and is finished with an EPDM rubber covering for reliable environmental sealing. It ships with an oxide inhibitor pre-installed, streamlining installation while helping protect the aluminum-to-copper connection against oxidation over time. As part of Burndy's UNITAP™ series, it is engineered for run/tap applications where dependable, code-compliant connections below grade or underwater are required.

Key Features

• Direct Burial & Submersible Rated: Purpose-built for direct burial and submersible installations, allowing secure below-grade or underwater electrical connections.
• Dual-Rated Al/Cu Construction: Aluminum body construction rated for both aluminum and copper conductors, giving installers flexibility across mixed-metal systems.
• 3-Conductor, Single-Sided Multi-Tap Design: Three ports arranged on a single side support efficient run/tap connections in one compact connector body.
• Wide Conductor Range: Accommodates 12 AWG-350 kcmil copper conductors and 10 AWG-350 kcmil aluminum conductors, covering a broad range of wire sizes.
• EPDM Rubber Covering: An EPDM rubber covering provides environmental sealing suited to underground and wet-location exposure.
• Pre-Installed Oxide Inhibitor: Oxide inhibitor is pre-applied at the factory, reducing field prep time and supporting long-term connection integrity.
• Insulated Connector: Supplied as an insulated connector for added protection at the termination point.
• Burndy UNITAP™ Series: Part of Burndy's UNITAP™ multi-tap connector line, identified by the Run/Tap product type.

Technical Specifications

• Conductor Range: 12-AWG
• Ports: 3
• Product Material: Aluminum
• Direct Burial: Yes
• Insulated: Yes
• Series: Unitap
• Connector Type: Multi Tap
• Conductor - AL Str Size Range: 10 AWG - 350 kcmil
• Conductor - Copper Str Size Range: 12 AWG - 350 kcmil
• Product Type: Run/Tap
• Trade Name: UNITAP™

Typical Applications

• Underground and Direct-Burial Electrical Systems
• Submersible and Wet-Location Wiring Installations
• Utility and Municipal Power Distribution
• Run/Tap Connections in Commercial and Industrial Systems
• Renovation and New Underground Construction

Why Burndy?

Burndy's BIBS3503DB pairs dual-rated Al/Cu construction with a direct burial and submersible rating, an EPDM rubber covering, and a pre-installed oxide inhibitor to support long-service connections in harsh underground and wet environments. As part of the UNITAP™ series, it reflects Burndy's focus on dependable, code-compliant connectors for demanding run/tap applications across commercial, industrial, and utility electrical systems.