Audiotek AT-309 AGU Fuse 0/4-Gauge Distribution Block

The Audiotek AT-309 is a car-audio distribution block designed to organize a larger power or ground wiring run into multiple smaller connections. It accepts two 0-gauge cable inputs and divides them into four 4-gauge outputs for multi-component system layouts. This helps reduce the need to run separate large-gauge cables from the battery or create multiple chassis ground points.

It is intended for installers and vehicle owners building systems with several amplifiers or other components that require organized power or ground distribution. The AT-309 provides a central connection point where compatible cable sizes can be secured and routed cleanly. Its passive design does not process or alter the audio signal; it supports the electrical wiring infrastructure behind the system.

The block uses solid brass construction for its cable-connection body. Brass is used in distribution hardware for a durable metal connection surface, while the clear acrylic cover helps shield the terminal area from surrounding environmental contact. The covered layout also makes it easier to visually inspect the connection area after installation.

Set-screw terminals hold the installed wire in place at both the input and output positions. This arrangement supports a straightforward wiring layout when one or two large-gauge feeds need to serve several 4-gauge cable runs. The AT-309 can be used for either power-wire distribution or ground-wire distribution, depending on the installation plan.

For a system upgrade, the AT-309 is useful when adding multiple compatible components without duplicating long cable runs. It can help consolidate wiring near amplifiers or another serviceable installation location. Match the connected wire sizes and the overall electrical design to the requirements of the vehicle and the equipment being installed.

Key Features

• Dual 0-Gauge Inputs: Accepts two 0-gauge cable connections.
• Four 4-Gauge Outputs: Splits wiring into four 4-gauge runs.
• Solid Brass Body: Provides durable metal cable connection points.
• Clear Acrylic Cover: Helps protect the terminal area.
• Set-Screw Terminals: Secure compatible wires in their terminals.
• Power Or Ground Use: Supports organized power or ground distribution.

Design & Installation

The AT-309 combines a solid brass distribution body with a clear acrylic protective cover. Its terminal layout is built around two 0-gauge inputs and four 4-gauge outputs, with set screws used to retain the installed cable. The cover helps keep the connection area enclosed while preserving visibility of the wiring layout.

Use the block where a system needs to divide compatible 0-gauge cable feeds into several 4-gauge runs, such as near multiple components. It may be used with power wire or ground wire, but the installation should follow the needs of the vehicle's electrical system and connected equipment. Confirm cable fitment before tightening the set screws and plan cable routing before final mounting.