Over 800,000 products available

Fuses & Circuit Breakers

Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

Fuses

Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

Circuit breakers

Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

Circuit Breakers
Circuit Breakers

Earth & Lightning Protection
Earth & Lightning Protection

Fuse Holders & Accessories
Fuse Holders & Accessories

Fuses
Fuses

51196 Products showing for Fuses & Circuit Breakers

4 of 999+
In Stock
Eaton 6A Ceramic Cartridge Fuse, 10 x 38 mm
  • RS Stock No. 703-8374
  • Mfr. Part No. C10G6
Subtotal (1 pack of 10 units)
£11.01(exc. VAT)
£11.01/pack
In Stock
Eaton xEffect xEffect Miniature Circuit Breaker, 1-Pole, 10A, Type C, 230V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 624-0333
  • Mfr. Part No. 278557 FAZ-C10/1
Subtotal (1 unit)
£22.85(exc. VAT)
£22.85/unit
In Stock
RS Better World
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 32A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 790-9345
  • Mfr. Part No. A9D19832
Subtotal (1 unit)
£176.55(exc. VAT)
£176.55/unit
In Stock
RS Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 1-Pole, 4A, Type C, 253V ac AC, 72 V dc DC, 6 kA Breaking
  • RS Stock No. 746-7652
  • Mfr. Part No. 2CDS251001R0044 S201-C4
Subtotal (1 unit)
£16.93(exc. VAT)
£16.93/unit
In Stock
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 1-Pole, 500mA, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 622-0042
  • Mfr. Part No. 5SY4105-7
Subtotal (1 unit)
£23.25(exc. VAT)
£23.25/unit
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 10A, Type D, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3470
  • Mfr. Part No. A9F55110
Subtotal (1 unit)
£27.08(exc. VAT)
£27.08/unit
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 10A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3341
  • Mfr. Part No. A9F54210
Subtotal (1 unit)
£73.51(exc. VAT)
£73.51/unit
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 32A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3574
  • Mfr. Part No. A9F55332
Subtotal (1 unit)
£112.28(exc. VAT)
£112.28/unit
Being discontinued
RS PRO 6.3A T Glass Cartridge Fuse, 5 x 20 mm
  • RS Stock No. 563-425
Subtotal (1 pack of 10 units)
£2.98(exc. VAT)
£2.98/pack
In Stock
Schneider Electric, ComPact, ComPacT NSX Molded Case Circuit Breaker 3-Pole 250A, Breaking Capacity 50 kA
  • RS Stock No. 260-7931
  • Mfr. Part No. C25N3
Subtotal (1 unit)
£556.41(exc. VAT)
£556.41/unit
In Stock
RS Better World
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 790-9294
  • Mfr. Part No. A9D11816
Subtotal (1 unit)
£148.47(exc. VAT)
£148.47/unit
In Stock
Eaton 63A British Standard Fuse A3 550V ac, 73.5 mm
  • RS Stock No. 413-383
  • Mfr. Part No. BAO63
Subtotal (1 unit)
£11.33(exc. VAT)
£11.33/unit
In Stock
Contactum Residual Current Circuit Breaker with Overload Protection, 6A Current Rating, 1-Pole, 30 mA Trip Sensitivity,
  • RS Stock No. 240-6382
  • Mfr. Part No. CCPBR0606AB
Subtotal (1 unit)
£23.70(exc. VAT)
£23.70/unit
In Stock
Eaton 50A British Standard Fuse A3 660V ac, 73 mm
  • RS Stock No. 415-216
  • Mfr. Part No. TIS50
Subtotal (1 unit)
£16.98(exc. VAT)
£16.98/unit
In Stock
RS Better World
Schneider Electric Residual Current Circuit Breaker with Overload Protection, 6A Current Rating, 1-Pole, 30 mA Trip
  • RS Stock No. 790-9193
  • Mfr. Part No. A9D31806
Subtotal (1 unit)
£148.47(exc. VAT)
£148.47/unit
In Stock
Eaton 30A Green Car Fuse, 32V dc
  • RS Stock No. 848-4403
  • Mfr. Part No. MAX-30
Subtotal (1 unit)
£6.81(exc. VAT)
£6.81/unit
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 20A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3562
  • Mfr. Part No. A9F55320
Subtotal (1 unit)
£113.61(exc. VAT)
£113.61/unit
In Stock
RS PRO 10 A In-line Fuse Holder for 5 x 20 mm, 250 V
  • RS Stock No. 237-5259
Subtotal (1 unit)
£2.34(exc. VAT)
£2.34/unit
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 16A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3344
  • Mfr. Part No. A9F54216
Subtotal (1 unit)
£72.15(exc. VAT)
£72.15/unit
In Stock
Fluke 440mA F Cartridge Fuse, 10 x 34 mm
  • RS Stock No. 605-8948
  • Mfr. Part No. 943121
Subtotal (1 unit)
£15.83(exc. VAT)
£15.83/unit
1
4
2560
Results per page

Guides & Articles

RCBOs Guide
There are many things to consider when choosing the right RCBO. Find out more in our comprehensive RCBOs guide.
Read more
Fuses Guide
Our fuses guide explains what they are, what they are used for, how they work, and the different types available.
Read more
Distribution Boards Guide
Our distribution boards guide explains what they are, their uses and types, and how to connect distribution boards.
Read more
MCBs Guide
What are MCBs and how do they work? Discover all you need to know in our comprehensive guide.
Read more

Related links