Rockford Fosgate RFFU40 40-Amp AGU Fuses, 4-Pack

The Rockford Fosgate RFFU40 is a four-pack of 40-amp AGU fuses for protecting compatible car-audio power circuits. It provides a direct replacement option when an existing AGU fuse of the same rating needs to be replaced. Each fuse is intended for use in an AGU fuse holder.

This pack is suited to installers and system owners maintaining a car-audio electrical system that specifies 40-amp AGU fusing. Proper fusing helps protect the connected power circuit when an overcurrent condition occurs. Fuse rating and holder type should always match the requirements of the installed equipment and wiring.

The RFFU40 uses platinum-plated contacts and high-conductivity plating to support current transfer through the fuse connection. Its AGU format is designed specifically for AGU fuse holders. A see-through window allows the fuse element to be visually inspected.

High-temperature, impact-resistant plastic casing helps protect the fuse assembly in an automotive installation environment. The platinum finish gives the fuses a coordinated appearance with compatible car-audio power accessories. This package includes four matching 40-amp fuses for service replacements or multi-location use.

Use the RFFU40 where a system calls for a 40-amp AGU fuse, rather than substituting a different fuse style or current rating. It can be integrated into a compatible inline fuse holder or distribution setup that accepts AGU fuses. Confirm the fuse requirement of the amplifier, accessory, holder, and installed wire before fitting a replacement.

Key Features

• 40-Amp Rating: Provides 40-amp AGU circuit protection.
• AGU Fuse Format: Designed for compatible AGU fuse holders.
• Four-Pack: Includes four matching replacement fuses.
• Platinum-Plated Contacts: Uses plated contacts for conductivity.
• Inspection Window: See-through design supports visual fuse checks.
• Protective Casing: High-temperature, impact-resistant plastic construction.

Design & Installation

The RFFU40 combines an AGU fuse design with platinum-plated contacts, high-conductivity plating, and a platinum finish. Its transparent inspection window makes it possible to view the fuse element without removing the fuse. The casing is specified as high-temperature and impact-resistant plastic.

Install each fuse only in a compatible AGU fuse holder and only where a 40-amp fuse is specified. Disconnect vehicle power before servicing an electrical circuit, then ensure the fuse is fully seated in its holder. Do not use this fuse to replace a differently rated fuse unless the system documentation calls for a 40-amp AGU fuse.