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 Vaneo W414 Sprinter W901 W902 W903 Fuse Box Battery A0035453501

€23.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A0005459712

Mercedes W447 OM654 Power Distributor Box Conectors Socket A0005459712

€23.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A6395480174

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

€23.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A2035454501

Mercedes W203 Fuse Box SAM Control Unit Module Relay A2035454501

€132.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A1729060105

Mercedes SLK R172 Rear Fuse Box SAM Relay Control Unit Module A1729060105

€89.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A1669063901

Mercedes ML W166 Relay Module Box Under Rear Right Seat F4 A1669063901

€37.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A2469067100-1

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

€23.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A2035450301

Mercedes-Benz C CLK Class W203 W209 Battery Terminal Fuse Box A2035450301

€23.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A2055400182

Mercedes W205 W213 C238 C253 Relay Fuse Box Top Cover Lid Cap A2055400182

€23.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A1669061202

Mercedes W221 Fuse Box Control Unit Module Relay A1669061202

€32.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A2129000204

Mercedes W212 Fuse Box Control Unit SAM Module Relay A2129000204

€23.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A2059007539

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

€108.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A1636880035-1

Mercedes-Benz M-Class ML W163 1 Fuse Box Relay Lid Cover Trim A1636880035

€23.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A0005456786

Mercedes W205 W213 Fuse Box Protective Bracket Cover A0005456786

€23.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A2129004901

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129004901

€28.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A2129008207

Mercedes W204 C200 Fuse Box Front SAM Control Module Relay Box A2129008207

€75.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A2229063302

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

€56.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A1715451301-1

Mercedes SLK R171 Roadster Fuse Box Control Unit SAM Module Relay A1715451301

€232.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A1775404307-1

Fuse Box Mercedes C118 W177 Engine Compartment Relay Box Module A1775404307

€113.95

Free delivery: Sep 28 – Oct 1

If paid before 14:00

Part no. A6395450301-1

Mercedes W639 Fuse Box Relay Control Unit Electric Module SAM A6395450301

Product currently unavailable

Part no. A2049060105-1

Mercedes W204 SAM Control Unit Module Fuse Box Relay Rear A2049060105

Product currently unavailable

Part no. A2045404150

Fuse Box Mercedes W204 W212 SAM Relay Control Unit Module A2045404150

Product currently unavailable

Part no. A0009821212

Energy Distributor Mercedes W205 W212 W213 W906 Control Unit Module A0009821212

Product currently unavailable

Part no. A2055402691

Mercedes W205 Fuse Box A2055402691

Product currently unavailable

Part no. A1695454332-1

Mercedes W169 W245 SAM Control Module Fuse Box Unit A1695454332

Product currently unavailable

Part no. A2115400082

Mercedes S211 W211 Fuse Box Unit Cover Front A2115400082

Product currently unavailable

Part no. A9069006701

Mercedes Sprinter W906 SAM Module Fuse Box Relay Control Unit A9069006701

Product currently unavailable

Part no. A2115459001

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

Product currently unavailable

Part no. A2119820402

Mercedes CLS W219 Battery Fuse Box Control Unit Module A2119820402

Product currently unavailable

Part no. A0009050538

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

Product currently unavailable

Part no. A2035451003

Fuse Box Cover Mercedes W203 W209 Battery Terminal Housing Trim Cap A2035451003

Product currently unavailable

Part no. A2479061803

Mercedes W177 W247 Battery Fuse Box Positive Distribution Terminal A2479061803

Product currently unavailable

Part no. A2045458601

Mercedes W204 Fuse Box Rear Relay Control Unit Module SAM A2045458601

Product currently unavailable

Part no. A1635400182

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

Product currently unavailable

Part no. A2115457701

Fuse Box Mercedes W211 CLS C219 Front SAM Control Unit Module A2115457701

Product currently unavailable

Part no. A1699010100

Mercedes W169 W245 Sam Control Module Fuse Box Unit A1699010100

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. A6395450601

Mercedes Vito W639 SAM Module Electric Control Unit A6395450601

Product currently unavailable

Part no. A2129002627

Mercedes W212 Fuse Box Relay Module Control Unit A2129002627

Product currently unavailable

Part no. A1695451940

Mercedes W169 W245 Fuse Box Module Unit A1695451940

Product currently unavailable

Part no. A2035453401

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

Product currently unavailable

Part no. A6395450301

Mercedes W639 Fuse Box Relay Control Unit Electric Module SAM A6395450301

Product currently unavailable

Part no. A2049067702

Mercedes W204 Fuse Box Rear SAM Module Electrical Fuse Unit A2049067702

Product currently unavailable

Part no. A2129008307

Mercedes W212 Fuse Box Control Unit Module SAM Relay Box A2129008307

Product currently unavailable

Part no. A2115456101

Mercedes W211 SAM Module Fuse Box Relay Control Unit A2115456101

Product currently unavailable

Part no. A1645403072

Mercedes ML W164 Rear Fuse Relay Box Module SRB A1645403072

Product currently unavailable

Part no. A2049060205-4

Mercedes W204 Rear SAM Module Fuse Box Relay Control Unit A2049060205

Product currently unavailable

Part no. A2075401650-1

Mercedes W204 Fuse Prefuse Box Relay Electrical Control Unit A2075401650

Product currently unavailable

Part no. A1695405645-1

Mercedes W169 SAM Module Control Fuse Box Unit A1695405645

Product currently unavailable

Part no. A2049005201

SAM Module Mercedes W204 Control Unit Electrical Fuse Box Unit A2049005201

Product currently unavailable

Part no. A2219007102

Mercedes W221 Fuse Box SAM Relay Control Unit Signal Module Front A2219007102

Product currently unavailable

Part no. A2229063805

Fuse Box Mercedes GLC X253 Engine Compartment Relay Box Unit A2229063805

Product currently unavailable

Part no. A2115456701

Mercedes C219 Fuse Box Rear Relay Control Unit Module A2115456701

Product currently unavailable

Part no. A2215460935

Mercedes W221 W216 Fuse Box Cover Control Unit Trim Panel Lid A2215460935

Product currently unavailable

Part no. 284B63788R

Mercedes Citan W415 109 CDI Fuse Box Module Unit 284B63788R

Product currently unavailable

Part no. A2215450801-1

Mercedes W221 Fuse Box Control Unit SAM Module Relay A2215450801

Product currently unavailable

Part no. A1715451301

Mercedes R171 Fuse Box Control Unit SAM Module Relay A1715451301

Product currently unavailable

Part no. A1645400672

Mercedes ML W164 Fuse Box Relay Module Front Control Unit Module A1645400672

Product currently unavailable

Part no. A2129001606

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

Product currently unavailable

Part no. A2129006824

Front Fuse Box Mercedes W204 S204 Relay Control Unit SAM Module A2129006824

Product currently unavailable

Part no. A2075401550

Mercedes W204 Battery Fuse Box Positive Distribution Terminal A2075401550

Product currently unavailable

Part no. A2129005401-1

Mercedes W207 Comfrot Control Module Ecu SAM A2129005401 5DK009620

Product currently unavailable

Part no. A2129003702

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129003702

Product currently unavailable

Part no. A1715451701

Mercedes SLK R171 Fuse Box SAM Relay Control Unit Module A1715451701

Product currently unavailable

Part no. A1645400072

Mercedes ML W164 Front Fuse Box SAM Relay Control Unit Module A1645400072

Product currently unavailable

Part no. A1699001600

Mercedes-Benz W169 W245 48V Technology SAM Control Module Fuse Box A1699001600

Product currently unavailable

Part no. A6399000800

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

Product currently unavailable

Part no. A1685453340

Mercedes-Benz A-Class W168 Fuse Box Unit Holder Bracket Frame A1685453340

Product currently unavailable

Part no. A2129004830

Mercedes SLK R172 W212 Rear Fuse Box SAM Relay Control Unit Module A2129004830

Product currently unavailable

Part no. A2215403050-1

Mercedes W221 Rear SAM Fuse Box Power Distribution Control Unit A2215403050

Product currently unavailable

Part no. A0015427419

Mercedes C140 W210 Multifunctional Purpose Relay Fuse Unit Module A0015427419

Product currently unavailable

Part no. A1685400024

Mercedes-Benz A-Class W168 Fuse Box ECU Cover Box A1685400024

Product currently unavailable

Part no. A1699004800

Mercedes-Benz A B Class W169 W245 SAM Control Module Fuse Box A1699004800

Product currently unavailable

Part no. 284B68764R

Mercedes W415 Fuse Box Relay Control Unit Module 284B68764R

Product currently unavailable

Part no. A0035421819

Mercedes C205 Fuse Box Relay Control Unit Module A0035421819

Product currently unavailable

Part no. A2215403050

Mercedes W221 Rear SAM Fuse Box Power Distribution Control Unit A2215403050

Product currently unavailable

Part no. A9069004700-1

Mercedes Sprinter W906 Fuse Box SAM Control Unit Module A9069004700

Product currently unavailable

Part no. A9065450003-2

Mercedes Sprinter W906 Fuse Box Cover Trim Panel Lid Grey A6395450003

Product currently unavailable

Part no. A9066880008

Mercedes W906 Cover Footwell Fuse Box Trim OBD Grey A9066880008

Product currently unavailable

Part no. A6385454440

Mercedes W639 W906 Battery Terminal Fuse Box Control Unit Module A6385454440

Product currently unavailable

Part no. A0009824823

Mercedes Sprinter W907 Fuse Box Battery Relay Gruner A0009824823

Product currently unavailable

Part no. A2045842982

Mercedes W204 Fuse Box Grouping Fuse Placement Map Card Diagram A2045842982

Product currently unavailable

Part no. A0025451901

Mercedes W210 Fuse Box Sam Module Control Unit A0025451901

Product currently unavailable

Part no. A2129003414

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

Product currently unavailable

Part no. lhd-A2215401250

Mercedes W221 Prefuse Fuse Distribution Box Unit Front A2215401250

Product currently unavailable

Part no. A2129007124

Mercedes W212 Fuse Box SAM Control Module Unit ECU A2129007124

Product currently unavailable

Part no. A1779061002-1

Mercedes W177 Fuse Box Power Distribution Junction Relay Unit A1779061002

Product currently unavailable

Part no. A9069005504

Mercedes W906 Fuse Box Relay Control Unit Electric Module SAM A9069005504

Product currently unavailable

Part no. A2129009705

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

Product currently unavailable

Part no. A1645403572

Mercedes ML W164 W251 Fuse Box Relay Module Control Unit A1645403572

Product currently unavailable

Part no. A1665402150

Mercedes W166 Seat Fuse Relay Junction Box Block A1665402150

Product currently unavailable

Part no. A2129005722

Mercedes W204 SAM Module Fuse Box Relay Control Unit A2129005722

Product currently unavailable

Part no. A2215450001

Mercedes W221 Fuse Box Front Relay Control Unit Base Module A2215450001

Product currently unavailable

Part no. A2129003814

Fuse Box Mercedes W204 W212 Front Relay Control Unit Module SAM A2129003814

Product currently unavailable

Part no. A2129006624

Fuse Box Mercedes W204 Front Relay Control Unit Module SAM A2129006624

Product currently unavailable

Part no. A2129005622

Mercedes W204 Front Fuse Box Relay Control Unit SAM Module A2129005622

Product currently unavailable

Part no. A2125400080

Mercedes W212 Fuse Box Housing Relay Unit Module A2125400080

Product currently unavailable

Part no. A1645400272-1

Mercedes W164 W251 Fuse Box Control Unit Module Relay A1645400272

Product currently unavailable

Part no. A2129009705-1

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

Product currently unavailable

Showing 199-297 of 487 products