Mercedes Vito W639 Battery Terminal Fuse Box Control Unit Module A6395400050

Mercedes Vito W639 Battery Terminal Fuse Box Control Unit Module is a factory-original electrical system component, designed specifically for the W639 series models. This used black fuse box allows for efficient circuit organization, safe power distribution, and convenient management of electrical protection in the vehicle. It is a practical solution for users looking to restore full functionality to the electrical system while maintaining the original architecture of the installation.

Specifications and technical data

• SKU: A6395400050
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6395400050
• Substitutable numbers: A6395400050, A 639 540 00 50, BG
• Color: Black
• Category: Fuses & Fuse Boxes

Purpose and function in the electrical system

The fuse box in the Mercedes W639 plays a key role in power distribution and electrical circuit protection. It is responsible for the logical arrangement of fuses and relays, which facilitates diagnostics, servicing, and potential modifications to the installation. Using an original component from the Fuses and fuse boxes category helps maintain compliance with factory service documentation and electrical diagrams.

Construction and functional features

The black housing of the box is designed to ensure stable mounting of fuses and connectors while protecting them from external factors in the mounting compartment. The design provides clearly defined slots, which reduces the risk of errors during service and facilitates access to individual power circuits.

• organized routing of electrical circuits,
• easier identification of individual protection devices,
• preservation of the factory connection layout in the vehicle.

As a result, the fuse box supports the stable operation of comfort systems, lighting, control units, and other energy consumers in the vehicle.

Benefits of using an original fuse box

Using an original fuse box for a Mercedes translates into a number of practical operational benefits:

• factory fitment for electrical harnesses and mounting points in the body,
• consistency with service documentation and installation diagrams,
• reduced risk of compatibility issues with connectors and wiring,
• easier electrical fault diagnostics thanks to a predictable circuit layout.

For workshops and users, this means shorter installation time, fewer modifications, and more predictable behavior of the electrical system after replacing the component.

Product condition and service application

The offered fuse box is a used component, which allows for an economical repair of the electrical system while maintaining the manufacturer's original specifications. This type of component is particularly useful in situations where there has been mechanical damage, overheating of sockets, or other faults preventing the proper operation of the fuses.

Replacing the box is a frequently chosen solution in cases of power supply problems for selected circuits, unstable operation of consumers, or signs of overheating in the area of the fuse sockets. Using an original component helps restore proper operating conditions for the installation without the need for deep interference with the wiring harnesses.

System expansion and related components

If you are planning a comprehensive repair or upgrade of the electrical system area in your Mercedes and need other components from the same group, such as additional boxes, power modules, or circuit distributors, check the available parts in the Mercedes Fuses and fuse boxes category.

If you are considering a wider vehicle repair and want to optimize service costs while maintaining the manufacturer's original specifications, it is worth checking out our guide on selecting used Mercedes-Benz components: Used parts for Mercedes - original parts from dismantling.