ABB - Installation Products BAC4038 - Heavy Duty Battery Connector, Copper Lead-Plated Stackable Lug for 4/0 Gauge Battery Cable, 3/8 Inch Stud Size, Die Color Code Yellow
ABB - Installation Products

BAC4038

UPC: 786210850030

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Minimum Qty: 10

Multiplier: 10

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Overview

The ABB BAC4038 Heavy Duty Battery Connector is a precision-engineered solution for high-current industrial, automotive, and marine applications requiring reliable 4/0 AWG cable termination. Constructed from high-conductivity copper with a lead plating finish, this connector ensures superior electrical performance and long-term corrosion resistance in harsh operating environments. The 3/8-inch stud size provides secure mechanical fastening while the stackable lug design enables modular installations and simplified inventory management via the yellow die color code. Designed for Class K flexible stranded copper conductors, the BAC4038 features a flared barrel entry for effortless cable insertion and an enclosed barrel design that prevents contaminant ingress. The connector meets ASTM Class C corrosion resistance specifications and delivers high pullout strength for demanding applications. With an embossed wire size identification on the lug, installation accuracy is guaranteed while the compact design optimizes space utilization in control panels and battery banks. Applications include industrial power distribution systems, electric vehicle charging infrastructure, marine power plants, renewable energy installations, and heavy machinery electrical connections. The connector is compatible with standard crimping tools and dies, ensuring consistent terminations across multiple installations. Trusted by engineers for its reliability and compliance with industry safety standards, the BAC4038 delivers measurable performance benefits in critical power systems where electrical integrity cannot be compromised.
  • Lead-plated copper construction for superior conductivity and corrosion resistance
  • 3/8-inch stud size with stackable lug design for modular installations
  • Compatible with 4/0 AWG Class K flexible stranded copper conductors
  • Yellow die color code for easy inventory management and identification
  • Enclosed barrel design prevents contaminant ingress in harsh environments

Specifications

Material
Copper
Stud Size
3/8 in
Type
Heavy Duty Battery Connectors
Wire Size
4/0 AWG
Package Dimensions (L x W x H)
3.5 IN x 3 IN x 3 IN
Package Dimensions (L x W x H)
8.89 cm x 7.62 cm x 7.62 cm
Package Weight (Imperial)
0.120 L
Package Weight (Metric)
0.054 kg
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How to Install the BAC4038 Battery Connectors

This guide provides step-by-step instructions for installing BAC4038 battery connectors safely and effectively.

Estimated time: 45m

Tools needed:

Screwdriver, Wire strippers, Crimping tool, Multimeter

Supplies needed:

BAC4038 connectors, Heat shrink insulation tubing, KOPR-SHIELD compound, Mounting screws

  1. Disconnect battery cables

    Before starting the installation, disconnect the battery cables from the battery posts. Note the locations of the positive and negative terminals to ensure correct installation.

  2. Prepare the battery cables

    Carefully strip the insulation from the battery cables without nicking the strands. Ensure the conductor strands are clean and free of dirt.

  3. Select and prepare connectors

    Choose the appropriate BAC4038 connector based on the gauge of the battery cable. If using heat shrink tubing, slide it onto the cable now. If using KOPR-SHIELD compound, apply it to the bare conductors.

  4. Crimp the connectors

    Insert the stripped end of the cable into the connector until it bottoms out. Position the connector in the crimping tool and compress it between the colored lines, starting nearest to the connector tongue.

  5. Apply heat shrink insulation

    If heat shrink insulators are used, position them over the connector barrel, overlapping the wire insulation by at least 1.5 inches. Apply heat according to the instructions until the insulation shrinks.

  6. Install the connectors

    Connect the positive lead to the positive battery terminal and the negative lead to the negative battery terminal. Use a torque of 10 to 15 ft-lbs to secure the connections.

Frequently Asked Questions about ABB - Installation Products

How are Thomas and Betts products typically installed?

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