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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

51178 Products showing for Fuses & Circuit Breakers

1 of 999+
In Stock
RS PRO BS 1362 Fuse Kit
  • RS Stock No. 893-8546
Subtotal (1 unit)
£57.70(exc. VAT)
In Stock
RS PRO FT Fuse Kit
  • RS Stock No. 893-8530
Subtotal (1 unit)
£71.08(exc. VAT)
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 6A, Type C, 100V, 12 V, 133 V, 220 V, 240 V, 60 V AC,
  • RS Stock No. 791-3290
  • Mfr. Part No. A9F54106
Subtotal (1 unit)
£27.19(exc. VAT)
In Stock
Rittal Copper SZ SZ Busbar
  • RS Stock No. 230-4854
  • Mfr. Part No. 2364000
Subtotal (1 unit)
£88.93(exc. VAT)
In Stock
Littelfuse Automotive Fuse Kit
  • RS Stock No. 219-9562
  • Mfr. Part No. 00950011XXN
Subtotal (1 unit)
£92.39(exc. VAT)
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 10A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3293
  • Mfr. Part No. A9F54110
Subtotal (1 unit)
£24.20(exc. VAT)
In Stock
RS PRO FT Fuse Kit
  • RS Stock No. 893-8543
Subtotal (1 unit)
£173.29(exc. VAT)
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 16A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3382
  • Mfr. Part No. A9F54316
Subtotal (1 unit)
£106.92(exc. VAT)
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In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 10A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6581
  • Mfr. Part No. EUC3P10C
Subtotal (1 unit)
£22.40(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 1-Pole, 2A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0198
Subtotal (1 unit)
£8.66(exc. VAT)
In Stock
Littelfuse Automotive Fuse Kit
  • RS Stock No. 219-9556
  • Mfr. Part No. 00940957XXN
Subtotal (1 unit)
£45.49(exc. VAT)
In Stock
RS Better World
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 16A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3297
  • Mfr. Part No. A9F54116
Subtotal (1 unit)
£24.20(exc. VAT)
In Stock
Siemens Copper Alpha 8GK Busbar
  • RS Stock No. 226-0831
  • Mfr. Part No. 8GK9733-0KK10
Subtotal (1 unit)
£38.89(exc. VAT)
In Stock
ABB System Pro M Compact System Pro M Compact Miniature Circuit Breaker, 1-Pole, 6A, Type C, 253V ac AC, 72 V dc DC, 6
  • RS Stock No. 488-6296
  • Mfr. Part No. 2CDS251001R0064 S201-C6
Subtotal (1 unit)
£16.45(exc. VAT)
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 16A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6585
  • Mfr. Part No. EUC3P16C
Subtotal (1 unit)
£22.40(exc. VAT)
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 16A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0181
Subtotal (1 unit)
£19.51(exc. VAT)
In Stock
RS PRO 32 A British Standard Fuse F1 550 V ac
  • RS Stock No. 521-2955
Subtotal (1 pack of 5 units)
£27.28(exc. VAT)
In Stock
Schneider Electric Acti9 Acti9 3 Phase Distribution Board 250A 8 Way
  • RS Stock No. 339-831
  • Mfr. Part No. SEA9BPN8
Subtotal (1 unit)
£431.30(exc. VAT)
In Stock
Europa TPN 3 Phase Distribution Board 125A 24 Way
  • RS Stock No. 849-6418
  • Mfr. Part No. TPN08
Subtotal (1 unit)
£129.97(exc. VAT)
In Stock
WISKA Enclosure Accessory
  • RS Stock No. 700-0818
  • Mfr. Part No. EN20
Subtotal (1 pack of 6 units)
£25.00(exc. VAT)
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