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

Make

Mercedes SLK R172 Fuse Relay Box Cover Cap Top Trim A1725400182

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129003922

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129003922

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2049060305

SAM Module Mercedes W204 Control Unit Electrical Fuse Box Unit A2049060305

£37.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1645400350-1

Mercedes ML W164 Fuse Prefuse Box Jump Start Terminal A1645400350

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1645403572-1

Mercedes W164 W251 Fuse Box Relay Module Control Unit A1645403572

£104.95

Free delivery: Aug 07

If paid before 14:00

Part no. rhd-A2135400124

Mercedes W213 Fuse Relay Electrical Box Housing Covering Panel A2135400124

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2049060405

Mercedes W204 Front Fuse Board Box Relay Unit Case A2049060405

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. rhd-A2055402250

Mercedes W205 Fuse Box Relay Control Module Battery Terminal A2055402250

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129005101

Fuse Box Mercedes W212 Rear SAM Relay Fuse Box Control Module A2129005101

£28.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129060005

Fuse Box Mercedes W212 Rear Relay Control Unit Electric Module SAM A2129060005

£47.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129060105

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129060105

£28.95

Free delivery: Aug 07

If paid before 14:00

Part no. A0005406050

Mercedes ML W164 W169 W205 W212 Fuse Box Relay Control Unit Module A0005406050

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2229063302

Fuse Box Mercedes W205 W222 Engine Compartment SAM Module Relay Unit A2229063302

£75.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1665400080

Fuse Box Cover Mercedes ML W166 C292 SAM Module Top Cap Panel Black A1665400080

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2075402950

Mercedes W204 Power Distribiuton Battery Fuse Box Control Unit ECU A2075402950

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2135406200

Fuse Box Mercedes W213 S213 W238 Rear Electrical Control Unit Module A2135406200

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1645403572

Mercedes ML W164 W251 Fuse Box Relay Module Control Unit A1645403572

£156.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2465401350

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

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129005001

Relay Control Unit Mercedes W212 Rear SAM Electrical Fuse Module A2129060105

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A9065460643

Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2215450801

Mercedes W221 Fuse Box Control Unit SAM Module Relay A2215450801

£189.95

Free delivery: Aug 07

If paid before 14:00

Part no. rhd-A2115400824

Fuse Box Housing Mercedes W211 CLS C219 Holder Mount Bracket A2115400824

£37.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2049060205-1

Mercedes C204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

£32.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1665400182-1

Mercedes C292 Fuse Box Cover Trim Panel Lid Black A1665400182

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129004901-1

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129004901

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A6395480174

Mercedes-Benz Vito W639 Fuse Box Cooling Outlet Pipe Air Duct A6395480174

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A0009050338

Mercedes W212 Multi-Purpose Windscreen Camera Control Unit Module A0009050338

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2465400950

Mercedes W176 W246 C117 Fuse Relay Box Unit Cables Wiring Loom A2465400950

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1640054799

Mercedes W164 Fuse Box Grouping Fuse Placement Map Card Diagram A1640054799

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2115452601

Mercedes ML W164 Prefuse Fuse Distribution Box Front A2115452601

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1695454232

Mercedes-Benz A-Class W169 SAM Control Module Fuse Box Unit A1695454232

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2045404150

Fuse Box Mercedes W204 W212 SAM Relay Control Unit Module A2045404150

£161.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2115455232

Mercedes W211 Front Fuse Box SAM SRB Module Relay Control Unit A2115455232

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129060905

Mercedes A207 Rear SAM Module Fuse Box Relay Control Unit A2129060905

£42.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2055402350

Mercedes A205 W247 Battery Fuse Box Positive Distribution Terminal A2055402350

£28.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2205400282

Mercedes CL S Class C215 W220 Fuse Box Unit Cover Front Left A2205400282

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A0045468540

Mercedes W221 Distributor Box Block Control Unit Relay A0045468540

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129000004

SAM Module Mercedes W212 Fuse Box Relay Control Unit A2129000004

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2215450801-1

Mercedes W221 Fuse Box Control Unit SAM Module Relay A2215450801

£85.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2465451440

Mercedes W176 Fuse Relay Box Cover Cap Top Trim Lid A2465451440

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2059068501-1

Fuse Box Mercedes W205 S205 W213 Fuse Box Front Relay Control Module A2059068501

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2115454401

Mercedes C219 Fuse Distribution Box Unit Moudle A2115454401

£104.95

Free delivery: Aug 07

If paid before 14:00

Part no. A9065451640

Mercedes-Benz Sprinter W906 Fuse Box Unit Holder Bracket Frame A9065451640

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2059068501

Mercedes W205 Fuse Box Rear Relay Electrical Control Unit Box A2059068501

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1665402350

Fuse Box Mercedes GLE W166 C292 W463 Relay Control Unit Module A1665402350

£28.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129007324

Mercedes SLK R171 Petrol M271 Fuse Box SAM Relay Control Module A2129007324

£70.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2135406100

Fuse Box Mercedes W205 Interior Equipment Fuse Box Control Module A2135406100

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A0009827403

Mercedes W205 Energy Distributor Power Electrical Control Unit A0009827403

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A4479009808

Mercedes Vito W447 Fuse Box Relay Control Unit Electric Module SAM 4479009808

£189.95

Free delivery: Aug 10 – 17

If paid before 14:00

Part no. A2205400382

Mercedes CL S Class C215 W220 Fuse Box Unit Front Right O/S Cover A2205400382

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2219067300

Mercedes-Benz S-Class W221 Fuse Box Control Unit Module SAM A2219067300

£189.95

Free delivery: Aug 07

If paid before 14:00

Part no. A4475450069

Mercedes Vito W447 Control Unit Fuse Box Compartment Mount A4475450069

£32.95

Free delivery: Aug 07

If paid before 14:00

Part no. A0009050538

Mercedes-Benz S-Class W221 Multi Purpose Camera Control Unit Module A0009050538

£66.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2035454901-1

Mercedes CL203 Fuse Box Control Unit Module SAM A2035454901

£37.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2215402350

Fuse Box Mercedes W221 W216 Junction Control Unit Relay Module A2215402350

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A9075402605

Mercedes W907 Fuse Box Control Unit Module Q2 A9075402605

£51.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2215450601

Mercedes W221 Dashboard Fuse Box Front Left N/S Control Module A2215450601

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2468200035

Mercedes-Benz A-Class W176 Mikrophone Roof Control Module A2468200035

£28.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129001606

Mercedes S212 Fuse Box Rear Relay Control Unit Electric Module SAM A2129001606

£42.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2465451500

Mercedes W176 Control Unit Bracket Holder Mount A2465451500

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2059065806

Mercedes W205 W213 C253 Fuse Box Front Relay Control Unit Module A2059065806

£37.95

Free delivery: Aug 07

If paid before 14:00

Part no. A0025450601

Mercedes W906 Fuse Relay Box Module Control Unit A0025450601

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129000004-1

Mercedes W212 SAM Module Fuse Box Relay Electrical Control Unit A2129000004

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1645400624

Mercedes W164 Fuse Box Relay Housing Cover A1645400624

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A0025451301

Mercedes W169 W245 W907 W910 Fuse Box Carrier A0025451301

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2049006301-1

Mercedes W204 Rear SAM Module Fuse Box Control Unit A2049006301

£47.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1775400840

Mercedes C118 W177 W247 Engine Compartment Fuse Box M260 Petrol A1775400840

£61.95

Free delivery: Aug 07

If paid before 14:00

Part no. rhd-A2035452301

Mercedes C CLC Class CL203 S203 W203 Rear SAM Tray Holder Bracket A2035452301

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2469067100-1

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

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. rhd-A1725450101

Mercedes SLK R172 Fuse Box SAM Module Unit Bracket Carrier Holder A1725450101

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2535848913

Mercedes C253 Fuse Box Grouping Fuse Placement Map Card Diagram A2535848913

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1779061302-1

Mercedes EQA H243 X118 W247 Fuse Box Relay Control Unit Module A1779061302

£66.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2059067200

Mercedes W205 S205 W213 Fuse Box Front Relay Control Unit Module A2059067200

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2205451840

Mercedes CL S Class C215 W220 Control Module Fuse Box Unit Holder A2205451840

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129004001

Mercedes W212 Fuse Box Control Unit Module SAM Relay Electrical Unit A2129004001

£142.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2045458601-1

Mercedes W204 Fuse Box Rear Relay Control Unit Module SAM A2045458601

£113.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2095453140

Fuse Box Holder Mercedes W209 Control Unit Mount Bracket CLK A2095453140

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A4475450069-1

Mercedes Vito W447 Fuse Box Compartment Housing Cover A4475450069

£28.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2115400082

Mercedes S211 W211 Fuse Box Unit Cover Front A2115400082

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129060005-1

Mercedes W212 Fuse Box Module Rear Relay Electric Control Unit SAM A2129060005

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2139068801-1

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Unit A2139068801

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2129001506

Mercedes S212 Fuse Box Rear Relay Control Unit Electric Module SAM A2129001506

£37.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1779069601

Mercedes W177 W247 Fuse Box Front Relay Engine Control Unit Module A1779069601

£37.95

Free delivery: Aug 07

If paid before 14:00

Part no. rhd-A2045450503

Mercedes W204 Fuse Box Cover Control Unit Holder Bracket A2045452147

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2469005312

Mercedes X117 X156 W246 Relay Control Unit Module A2469005312

£61.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1665450403

Mercedes W166 Junction Fuse Box Cover Housing Positive Terminal A1665450403

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2135400200

Mercedes W205 W213 W238 Fuse Box Cover Control Unit Holder Bracket A2135400200

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. RHD-A2055408195

Mercedes W205 Rear Fuse Box Relay Power Distribution Module Unit A2055408195

£113.95

Free delivery: Aug 07

If paid before 14:00

Part no. A0015456403

Mercedes Sprinter W906 Fuse Box Relay Cover Box Cap A0015456403

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1665402950

Mercedes W166 Prefuse Box F32/4 Power Distribution Box A1665402950

£113.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2215450701

Mercedes W221 Fuse Box Distribution Dashboard A2214409107

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. rhd-A1705400224

Mercedes SLK R170 Control Unit Module ECU Cover Box Housing Bracket A1705400224

£18.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2049060805

Mercedes S204 Estate Rear SAM Control Module Unit Fuse Box A2049060805

£32.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2465849100

Mercedes W176 Map Card Fuse Box Grouping Diagram A2465849100

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A1649820423

Mercedes V251 Rear Fuse Box Relay Power Distribution Module Unit A1649820423

£146.95

Free delivery: Aug 07

If paid before 14:00

Part no. RHD-A1686890283

Mercedes W414 Interior Fuse Box Cover Panel Cap A1686890283

£13.95

Free delivery: Aug 07

If paid before 14:00

Part no. A0025451201

Mercedes W169 W245 W906 Fuse Box Carrier A0025451201

£23.95

Free delivery: Aug 07

If paid before 14:00

Part no. A2069003613

Mercedes W206 BCM Body Control Unit On Board Power Distribution A2069003613

£113.95

Free delivery: Aug 07

If paid before 14:00

Part no. N000000004325-1

Mercedes W169 W204 W211 C219 Replacement Fuse Kit Set N000000004325

£13.95

Free delivery: Aug 07

If paid before 14:00

...

Showing 100-198 of 701 products