What is the construction and purpose of fuses and fuse boxes?

Fuses and fuse boxes are components of a car's electrical installation responsible for protection and power distribution to individual circuits. A typical fuse contains a fusible link with a specific current rating, and a fuse box has sockets, connectors, circuit descriptions, and often spaces for relays. These elements are mounted in the cabin, engine compartment, or trunk, depending on the vehicle version.

What are fuses and fuse boxes used for?

Fuses and fuse boxes are used to protect wires and power consumers from the effects of overloads and short circuits. Their task is also to organize electrical circuits, which facilitates diagnostics and replacement of a damaged element. Without efficient protection, a failure in one circuit can affect the operation of lights, radio, air conditioning, or control modules.

What is the construction and function of a car electrical relay?

A car electrical relay is a control element that uses a small current to switch a higher-load circuit on or off. It usually consists of a housing, a coil, working contacts, and terminals fitting into a socket in the box. The cooperation of the relay with the fuse box allows for proper power supply to systems such as fans, heating, or selected comfort modules.

How to choose the right fuse box for a car?

It is best to compare the OEM part number, interchangeable numbers, mounting location on the vehicle, and connector type. It is also worth checking the engine version, equipment, and any differences between pre-facelift and post-facelift models. For boxes integrated with relays, the completeness of the relay configuration and pin layout compatibility are also important.

What symptoms indicate a problem with a fuse or fuse box?

A typical symptom is the sudden failure of one device or a whole group of consumers, for example, lights, wipers, or the radio. In the case of a fuse box, there may be power interruptions, traces of overheating, corroded contacts, or loose sockets. Repeated fuse blowing usually means that you also need to check the installation and the component powered by the given circuit.

How to maintain fuses and fuse boxes after installation?

After installation, it is worth periodically checking the cleanliness of the housing, the condition of the cover, and the absence of moisture traces at the connectors. Do not replace a fuse with an element of a higher rating than specified by the manufacturer. It is also good practice to compare the circuit description with the actual car equipment after every major installation repair.

Fuses and fuse boxes

At Global Parts, we offer a wide selection of original used car parts, including fuses and fuse boxes for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Our fuses and fuse boxes undergo quality control to ensure you receive a top-quality product.

More information

Find it faster

Match to your vehicle

Make

Mercedes W176 W246 C117 Fuse Relay Box Unit Cables Wiring Loom A2469067100

€23.95

Part no. A2095453140

Fuse Box Holder Mercedes W209 Control Unit Mount Bracket CLK A2095453140

€23.95

Part no. A6399000800-1

Mercedes Vito W639 Fuse Box Relay Control Unit Front SAM Module A6399000800

€142.95

Part no. A2125400072

Mercedes W212 Fuse Box Housing Relay Unit Module A2125400072

€23.95

Part no. A0035453501

Mercedes Vaneo W414 Sprinter W901 W902 W903 Fuse Box Battery A0035453501

€23.95

Part no. A2038301613

Mercedes C CLK Class W203 C209 Engine Bay Fuse Box Right O/S Cover A2038301613

€23.95

Part no. A2429004101

Mercedes W204 W212 Telephone Control Unit Module ECU A2429004101

€23.95

Part no. A2059007539

Fuse Box Mercedes S205 Interior Front Relay Fuse Box Sam Module A2059007539

€108.95

Part no. A2465400140

Mercedes-Benz A-Class W176 Equipment Electrical Cover Fuse Box A2465400140

€23.95

Part no. A0005456786

Mercedes W205 W213 Fuse Box Protective Bracket Cover A0005456786

€23.95

Part no. A0015456403

Mercedes Sprinter W906 Fuse Box Relay Cover Box Cap A0015456403

€23.95

Part no. A0025451201

Mercedes W169 W245 W906 Fuse Box Carrier A0025451201

€28.95

Part no. A1775404307-1

Fuse Box Mercedes C118 W177 Engine Compartment Relay Box Module A1775404307

€113.95

Part no. A6395450203

Mercedes-Benz Vito W639 Fuse Box Cover Cap Trim A6395450203

€23.95

Part no. A2465451440

Mercedes W176 Fuse Relay Box Cover Cap Top Trim Lid A2465451440

€23.95

Part no. A2465401350-1

Mercedes W156 W176 W246 Fuse Box Front Relay Control Unit Module A2465401350

€32.95

Part no. A9075407312

Mercedes W907 Battery Fuse Box Positive Distribution Terminal A2479061803

€56.95

Part no. A1695453740

Mercedes-Benz A-Class W169 Fuse Box Unit Holder Bracket Frame A1695453740

€23.95

Part no. A2059068501

Mercedes W205 Fuse Box Rear Relay Electrical Control Unit Box A2059068501

€23.95

Part no. A2465410905

Mercedes W176 W246 C117 X156 Battery Fuse Relay Box Top Cover Trim A2465410905

€37.95

Part no. A2075844181

Mercedes C207 Fuse Box Grouping Fuse Placement Map Card Diagram A2075844181

€23.95

Part no. A9069003502

Mercedes W906 Fuse Box Relay Control Unit Electric Module SAM A9069003502

Product currently unavailable

Part no. A2139068801

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Unit A2139068801

Product currently unavailable

Part no. A1699010100

Mercedes W169 W245 Sam Control Module Fuse Box Unit A1699010100

Product currently unavailable

Part no. A9065454701

Mercedes W906 Fuse Box Relay Control Unit Electric Module A9065454701

Product currently unavailable

Part no. A2129006724-1

Fuse Box Mercedes W204 S204 W212 SAM Control Unit Module Relay A2129006724

Product currently unavailable

Part no. A1695450540

Fuse Box Mercedes W169 W245 Electrical Relay Control Unit A1695450540

Product currently unavailable

Part no. A6395450301

Mercedes W639 Fuse Box Relay Control Unit Electric Module SAM A6395450301

Product currently unavailable

Part no. A2125407050-1

Mercedes W212 Fuse Box Control Unit Power Distribution Electrical A2125407050

Product currently unavailable

Part no. A6399005400

Mercedes Vito W639 Fuse Box Relay Control Unit Electric Module SAM A6399005400

Product currently unavailable

Part no. A9075450100

Fuse Box Mercedes Sprinter W907 W910 Relay Box Fuse Box Module A9075450100

Product currently unavailable

Part no. A2129005812

Mercedes S204 Estate SAM Module Fuse Box Relay Control Unit A2129005812

Product currently unavailable

Part no. A0035421819

Mercedes C205 Fuse Box Relay Control Unit Module A0035421819

Product currently unavailable

Part no. A2119820402

Mercedes CLS W219 Battery Fuse Box Control Unit Module A2119820402

Product currently unavailable

Part no. A2129003314

Mercedes W204 Front Fuse Box Relay Control Unit SAM Module A2129003314

Product currently unavailable

Part no. A0025450901

Mercedes W169 W245 W906 Fuse Holder Electrical Fuse Box Bracket A0025450901

Product currently unavailable

Part no. A6395450301-2

Mercedes W639 Fuse Box Relay Control Unit Electric Module SAM A6395450301

Product currently unavailable

Part no. A2075401550-1

Mercedes W204 Battery Fuse Box Positive Distribution Terminal A2075401550

Product currently unavailable

Part no. A2035454901-1

Mercedes CL203 Fuse Box Control Unit Module SAM A2035454901

Product currently unavailable

Part no. A6399005400-1

Mercedes Vito W639 Fuse Box Relay Control Unit Electric Module SAM A6399005400

Product currently unavailable

Part no. A4479060117

Mercedes Vito W447 Front Fuse Box Relay Control Unit Module A4479060117

Product currently unavailable

Part no. A2035400050

Fuse Box Mercedes SLK R171 W203 W209 Front Relay Control Unit A2035400050

Product currently unavailable

Part no. A2129006012

Fuse Box Mercedes W204 W212 SAM Relay Control Unit Module A2129006012

Product currently unavailable

Part no. A2469068601

Battery Junction Block Mercedes W176 W246 Battery Plus Pole Terminal A2469068601

Product currently unavailable

Part no. A2129003414

Fuse Box Mercedes C204 W204 Front Relay Control Unit Module SAM A2129003414

Product currently unavailable

Part no. A6399005400-2

Mercedes Vito W639 Fuse Box Relay Control Unit Electric Module SAM A6399005400

Product currently unavailable

Part no. A9069006701

Mercedes Sprinter W906 SAM Module Fuse Box Relay Control Unit A9069006701

Product currently unavailable

Part no. A1695451940

Mercedes W169 W245 Fuse Box Module Unit A1695451940

Product currently unavailable

Part no. A2215450001

Mercedes W221 Fuse Box Front Relay Control Unit Base Module A2215450001

Product currently unavailable

Part no. A0025424019-1

Mercedes W906 W907 Cut Off Electric Relay Module A0025424019

Product currently unavailable

Part no. A2129060105

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129060105

Product currently unavailable

Part no. A9065453001

Mercedes W906 Fuse Box SAM Relay Control Unit Module A9065453001

Product currently unavailable

Part no. A2045458201

Mercedes W204 Rear Fuse Box Relay SAM Control Unit Module A2045458201

Product currently unavailable

Part no. A2139062202

Mercedes W213 W222 Fuse Box Rear Electrical Fuse Unit Module A2139062202

Product currently unavailable

Part no. A2115455301

Fuse Box Mercedes W211 Rear Trunk Module Relay Fuse Box SAM A2115455301

Product currently unavailable

Part no. A2129006624

Fuse Box Mercedes W204 Front Relay Control Unit Module SAM A2129006624

Product currently unavailable

Part no. A1715451301

Mercedes R171 Fuse Box Control Unit SAM Module Relay A1715451301

Product currently unavailable

Part no. A2475407600

Fuse Box Cover Mercedes W177 W247 Engine Compartment Housing Holder A2475407600

Product currently unavailable

Part no. A2129009705

Mercedes W204 W212 Fuse Box Relay Control Unit Electric SAM Module A2129009705

Product currently unavailable

Part no. A1715451901

Mercedes SLK R171 Fuse Box Rear SAM Relay Control Unit Module A1715451901

Product currently unavailable

Part no. A4475404326-1

Mercedes Vito W447 Fuse Relay Box Control Module A4475404326

Product currently unavailable

Part no. A2075401550

Mercedes W204 Battery Fuse Box Positive Distribution Terminal A2075401550

Product currently unavailable

Part no. A9069004700-1

Mercedes Sprinter W906 Fuse Box SAM Control Unit Module A9069004700

Product currently unavailable

Part no. A2115459001

Fuse Box Mercedes W211 W219 Junction Relay Control Unit Module SAM A2115459001

Product currently unavailable

Part no. A2129004025

Mercedes W212 Fuse Box Relay Control Unit Module SAM A2129004025

Product currently unavailable

Part no. A2095451701

Mercedes A209 Fuse Box SAM Control Module Relay Box A2095451701

Product currently unavailable

Part no. A2479061803

Mercedes W177 W247 Battery Fuse Box Positive Distribution Terminal A2479061803

Product currently unavailable

Part no. A2129007104

Mercedes W212 SAM Module Control Unit Electrical Fuse Box Unit A2129007104

Product currently unavailable

Part no. A2059007037

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Fuse Unit A2059007037

Product currently unavailable

Part no. A2035450403

Mercedes-Benz C CLK Class W203 C209 Fuse Box Cover Engine A2035450403

Product currently unavailable

Part no. A1715450701

Mercedes SLK R171 Rear SAM Control Unit Module Relay Fuse Box A1715450701

Product currently unavailable

Part no. A2095452801

SAM Module Mercedes CLK W209 C209 A209 Fuse Box Relay Control Unit A2095452801

Product currently unavailable

Part no. A6395450003

Mercedes Vito W639 Cover Fuse Box Battery Trim Panel Lid A6395450003

Product currently unavailable

Part no. A2115457301

Mercedes C219 Front Fuse Box SAM Relay Control Module A2115457301

Product currently unavailable

Part no. A2129008307

Mercedes W212 Fuse Box Control Unit Module SAM Relay Box A2129008307

Product currently unavailable

Part no. A1645408101

SAM Control Module Mercedes W164 W251 Comfort Fuse Box Unit A1645408101

Product currently unavailable

Part no. A1645403372

Mercedes ML W164 Fuse Box Relay Control Unit Rear A1645403372

Product currently unavailable

Part no. A1635400182

Mercedes-Benz ML-Class W163 Fuse Box Lid Cover Box Trim A1635400182

Product currently unavailable

Part no. A1635450016

Mercedes ML W163 Fuse Box SAM Control Unit Module A1635450016

Product currently unavailable

Part no. A2135403038

Fuse Box Mercedes W205 W213 C238 Relay Module Control Unit A2135403038

Product currently unavailable

Part no. A2115459301

Mercedes W211 W219 Fuse Box Rear SAM Module Electrical Fuse Unit A2115459301

Product currently unavailable

Part no. A2035453401

Mercedes C CLK Class W203 C209 Sam Control Module Fuse Box Rear A2035453401

Product currently unavailable

Part no. A9066880008

Mercedes W906 Cover Footwell Fuse Box Trim OBD Grey A9066880008

Product currently unavailable

Part no. A4475450069

Mercedes Vito W447 Control Unit Fuse Box Compartment Mount A4475450069

Product currently unavailable

Part no. A2075401850

Fuse Box Mercedes W204 Battery Terminal Control Unit Module A2075401850

Product currently unavailable

Part no. A1645400701

Mercedes ML W164 Rear SAM Module Control Unit Fuse Box A1645400701

Product currently unavailable

Part no. A1695454332

Mercedes-Benz A B Class W169 W245 Sam Control Module Fuse Box Unit A1695454332

Product currently unavailable

Part no. A1645403472

Mercedes W164 Fuse Box Relay Module Unit A1645403472

Product currently unavailable

Part no. A1695405645

Mercedes W169 SAM Control Module Fuse Box Unit A1695405645

Product currently unavailable

Part no. A1635400224

Mercedes-Benz M-Class ML W163 Fuse Box Housing Unit Case A1635400224

Product currently unavailable

Part no. A1665405202

Mercedes ML W166 GLE C292 Engine Compartment Fuse Box Right A1665405202

Product currently unavailable

Part no. A9065454401

Mercedes Sprinter W906 Fuse Box Relay Module Control Unit A9065454401

Product currently unavailable

Part no. A2125400450

Fuse Box Mercedes W212 Battery Terminal Control Unit Module A2125400450

Product currently unavailable

Part no. A1645403572-2

Mercedes W164 W251 Fuse Box Relay Module Control Unit A1645403572

Product currently unavailable

Part no. A2049060105-1

Mercedes W204 SAM Control Unit Module Fuse Box Relay Rear A2049060105

Product currently unavailable

Part no. A2129000004-2

SAM Module Mercedes W212 Fuse Box Relay Control Unit A2129000004

Product currently unavailable

Part no. A9065454301

Mercedes Sprinter W906 Fuse Box Relay Control Unit Module A9065454301

Product currently unavailable

Part no. A2075402550

Mercedes W204 W207 Fuse Box Prefuse Box Module Relay Holder A2075402550

Product currently unavailable

Part no. A1699010100-1

Fuse Box Mercedes W169 W245 Sam Control Module Unit ECU A1699010100

Product currently unavailable

Showing 199-297 of 516 products