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.

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Mercedes W906 Bracket Mount Fuse Distribution Box A9065420044

€23.95

Free delivery: Sep 11 – 14

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 11 – 14

If paid before 14:00

Part no. A4475450069-2

Mercedes Vito W447 Control Unit Fuse Box Compartment Mount A4475450069

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129004901-1

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129004901

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2075402950

Mercedes W204 Power Distribiuton Battery Fuse Box Control Unit ECU A2075402950

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2215401101

Mercedes W221 Fuse Box Control Unit SAM Module Relay Controller A2215401101

€142.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129009622

Mercedes W212 Fuse Box Relay Rear SAM Control Unit Module A2129009622

€51.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A6385450319

Mercedes W639 W638 W906 Fuse Box Unit Holder Bracket Frame A6385450319

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0045467540

Mercedes W204 W221 Distributor Box Block Control Unit Relay A0045467540

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2059068501-1

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

€28.95

Free delivery: Sep 11 – 14

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 11 – 14

If paid before 14:00

Part no. A2045403850

Mercedes W204 SAM Fuse Prefuse Box Relay Control Unit A2045403850

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2515450940

Mercedes W251 Fuse Box SAM Module Unit Bracket Carrier Holder A2515450940

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2469005312

Mercedes X117 X156 W246 Relay Control Unit Module A2469005312

€75.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A9065460643-1

Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0009050338

Mercedes W212 Multi-Purpose Windscreen Camera Control Unit Module A0009050338

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A9075401805

Mercedes Sprinter W907 Battery Terminal Unit Connection Box A9075401805

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2075400740

Fuse Box Mercedes W204 Battery Terminal Control Unit Module A2075400740

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2045400150

Mercedes-Benz C E Class W204 W207 Fuse Distribution Box Interior A2045400150

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129009908

Mercedes SLK R172 Fuse Box Relay Control Unit SAM Module A2129009908

€127.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1665402950

Mercedes W166 Prefuse Box F32/4 Power Distribution Box A1665402950

€132.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0535450226

Mercedes Sprinter W906 Fuse Box Connector Plug Socket A0535450226

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2215402462

Mercedes W221 SAM Fuse Box Comfort Control Module Unit ECU A2215402462

€42.95

Free delivery: Sep 11 – 14

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 11 – 14

If paid before 14:00

Part no. A1635400382

Mercedes ML W163 Fuse Relay Box ECU Cover Trim A1635400382

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1715451701

Mercedes SLK R171 Fuse Box SAM Relay Control Unit Module A1715451701

€279.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0009820512

Energy Distributor Mercedes W177 W212 Power Control Unit Module A0009820512

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2475451101

Mercedes C118 W177 C247 Fuse Box Module Cover Cap Trim Housing M282 A2475451101

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2139065706-1

Fuse Box Mercedes W205 W213 Front Engine Compatment Relay Module A2139065706

€51.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A4479060400

Mercedes W447 Fuse Relay Box Module Control Unit A4479060400

€61.95

Free delivery: Sep 11 – 14

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 11 – 14

If paid before 14:00

Part no. A2119820302

Mercedes W211 C219 Prefuse Fuse Distribution Box Electric Unit Front A2119820302

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2215402350-1

Mercedes W221 W216 Fuse Box Junction Control Unit Relay Module A2215402350

€28.95

Free delivery: Sep 10 – 14

If paid before 14:00

Part no. A0009827403

Mercedes W205 Energy Distributor Power Electrical Control Unit A0009827403

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2059067200-1

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

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2049060405

Mercedes W204 Front Fuse Board Box Relay Unit Case A2049060405

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2475457300

Mercedes W177 Fuse Box Relay Cover Lid Control Unit Bracket Trim A2475457300

€23.95

Free delivery: Sep 11 – 14

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 11 – 14

If paid before 14:00

Part no. A9075409682

Mercedes Sprinter W907 W910 Fuse Box Relay Box Fuse Box Module A9075409682

€85.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2059067200

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2055463100

Retaining Plate Mercedes W205 Relay Fuse Box Holder Bracket A2055463100

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0025451301

Mercedes W169 W245 W907 W910 Fuse Box Carrier A0025451301

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2205400382

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

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0025450601

Mercedes W906 Fuse Relay Box Module Control Unit A0025450601

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2465403803-1

Mercedes W117 W156 W176 W242 W246 Electrical Fuse Relay Box A2465403803

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129007324

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

€94.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2055402750

Mercedes W205 C253 Hybrid Fuse Control Unit Module Distribution Box A2055402750

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2055400840

Mercedes W205 W238 Fuse Box Cover Control Unit Holder Bracket A2055400840

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1775405931

Mercedes W177 Engine Compartment Power Distribution Fuse Box Unit A1775405931

€99.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2475451001

Mercedes W177 Fuse Box Holder Bracket Support Mount Carrier A2475451001

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2115452601

Mercedes ML W164 Prefuse Fuse Distribution Box Front A2115452601

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1645400750

Mercedes ML W164 Battery Fuse Box Power Distribution A1645400750

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129005401

Mercedes W207 Fuse Junction Box Relay Control Unit Module SAM A2129005401

€51.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129060005-1

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129004901

Fuse Box Mercedes W212 Rear SAM Relay Control Unit Module A2129004901

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2036901430

Mercedes C CLC Class CL203 W203 Rear SAM Unit Fuse Box Trim Cover A2036901430

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2125406250-1

Mercedes W212 SAM Fuse Prefuse Box Relay Junction Control Unit A2125406250

€51.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2115455232

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1779061302

Mercedes EQA H243 W247 Fuse Box Relay Control Unit Module A1779061302

€80.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2139068701-2

Mercedes W205 W213 Fuse Box Rear SAM Module Electrical Control Unit A2139068701

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2135400200

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0005406050

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2139065706

Mercedes W205 W213 Front Engine Compatment Fuse Relay Box Module A2139065706

€37.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2055402850

C205 Fuse Box Mercedes C205 Electrical Interior Relay Fuse Socket Control A2055402850

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A9065451640

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2465410100

Mercedes W176 W246 Battery Cover Accumulator Trim Panel Lid A2465410100

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0065454601

Energy Distributor Mercedes W204 OM656 Power Control Unit Module A0065454601

€32.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2125400382

Mercedes W212 Cover Fuse Box Trim Panel Lid A2125400382

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129004711

Mercedes W204 W212 Front Fuse Box Relay Control Unit SAM Module A2129004711

€232.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1645450201

Fuse Box Mercedes ML W164 W251 OM642 Diesel Relay Module Unit A1645450201

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A9075409482

Fuse Box Mercedes Sprinter W907 Prefuse Box Module Relay Holder A9075409482

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2045403750

Mercedes W204 SAM Module Control Unit Electrical Fuse Box Unit A2045403750

€89.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2465403803

Mercedes-Benz A-Class W176 Cover Equipment Electrical Fuse Box A2465403803

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1665402450-1

Mercedes ML W166 Fuse Box Front Relay Control Unit Module A1665402450

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0009821012

Mercedes W166 W213 C238 Power Distribution Plate Control Unit Module A0009821012

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129007024

Mercedes CLS C218 Front Fuse Relay Box On Board Supply A2129007024

€75.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2059008204

Mercedes W205 SAM Module Fuse Box Relay Control Unit A2059008204

€89.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2123300135

Mercedes W212 Front Axle Suspension Wishbone Ball Joint Mount A2123300135

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1779069601

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

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2465401350

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

€28.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A9065460643

Mercedes Sprinter W906 Fuse Box Relay Bracket Monunt Holder A9065460643

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2129003922

Mercedes W212 Fuse Box Rear SAM Relay Control Unit Module A2129003922

€42.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0295450432

Mercedes CL W215 W220 Front SAM Fuse Box Control Module Left N/S A0295450432

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1669001814

Mercedes W166 SAM Body Control Unit Module Fuse Box A1669001814

€47.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A1645400624

Mercedes W164 Fuse Box Relay Housing Cover A1645400624

€23.95

Free delivery: Sep 11 – 14

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 11 – 14

If paid before 14:00

Part no. A2095453140

Fuse Box Holder Mercedes W209 Control Unit Mount Bracket CLK A2095453140

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2125400072

Mercedes W212 Fuse Box Housing Relay Unit Module A2125400072

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0035453501

Mercedes Vaneo W414 Sprinter W901 W902 W903 Fuse Box Battery A0035453501

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2038301613

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2429004101

Mercedes W204 W212 Telephone Control Unit Module ECU A2429004101

€23.95

Free delivery: Sep 11 – 14

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 11 – 14

If paid before 14:00

Part no. A2465400140

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

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A2215450801

Mercedes W221 Fuse Box Control Unit SAM Module Relay A2215450801

€227.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0005456786

Mercedes W205 W213 Fuse Box Protective Bracket Cover A0005456786

€23.95

Free delivery: Sep 10 – 14

If paid before 14:00

Part no. A0015456403

Mercedes Sprinter W906 Fuse Box Relay Cover Box Cap A0015456403

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

Part no. A0025451201

Mercedes W169 W245 W906 Fuse Box Carrier A0025451201

€28.95

Free delivery: Sep 11 – 14

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 11 – 14

If paid before 14:00

Part no. A6395450203

Mercedes-Benz Vito W639 Fuse Box Cover Cap Trim A6395450203

€23.95

Free delivery: Sep 11 – 14

If paid before 14:00

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