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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

52712 Products showing for Fuses & Circuit Breakers

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In Stock
RS Better World
Siemens 5SV3 Series Residual Current Circuit Breaker, 63A, 4-Pole, 300 mA, Type A, 0.8 kA 400V ac
  • RS Stock No. 124-7743
  • Mfr. Part No. 5SV3646-6
Subtotal (1 unit)
£199.24(exc. VAT)
£199.24/unit
In Stock
Schneider Electric TeSys TeSyS GV Thermal Circuit Breaker -, 73A Current Rating 3-Pole, DIN Rail
  • RS Stock No. 188-4747
  • Mfr. Part No. GV3P73
Subtotal (1 unit)
£334.41(exc. VAT)
£334.41/unit
Temporarily out of stock
RS Better World
Schneider Electric, ComPact NSX, ComPacT NSX250F Molded Case Circuit Breaker 3-Pole 250A, Breaking Capacity 36 kA, Fixed
  • RS Stock No. 254-6352
  • Mfr. Part No. C25F3
Subtotal (1 unit)
£446.90(exc. VAT)
£446.90/unit
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 3-Pole, 10A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0205
Subtotal (1 unit)
£29.22(exc. VAT)
£29.22/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 25A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3394
  • Mfr. Part No. A9F54325
Subtotal (1 unit)
£116.89(exc. VAT)
£116.89/unit
In Stock
TE Connectivity W58 Thermal Circuit Breaker -, 10A Current Rating 1-Pole, Direct
  • RS Stock No. 782-0892
  • Mfr. Part No. W58-XB1A4A-10
Subtotal (1 unit)
£6.74(exc. VAT)
£6.74/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 32A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3398
  • Mfr. Part No. A9F54332
Subtotal (1 unit)
£115.41(exc. VAT)
£115.41/unit
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 6A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0186
Subtotal (1 unit)
£19.44(exc. VAT)
£19.44/unit
In Stock
Europa EUC2P EUC2P Miniature Circuit Breaker, 2-Pole, 2A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6531
  • Mfr. Part No. EUC2P2C
Subtotal (1 unit)
£12.79(exc. VAT)
£12.79/unit
In Stock
RS Better World
Siemens SENTRON 5SL4 Miniature Circuit Breaker, 1-Pole, 1A, Type C, 400V ac AC, 72 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 209-5958
  • Mfr. Part No. 5SL4101-7
Subtotal (1 unit)
£22.45(exc. VAT)
£22.45/unit
In Stock
Hager NFT Miniature Circuit Breaker, 1-Pole, 16A, 240V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4742
  • Mfr. Part No. NFT716
Subtotal (1 unit of 12 units)
£67.50(exc. VAT)
£67.50/unit
In Stock
Allen Bradley 1492-SPM 1492-SPM Miniature Circuit Breaker, 3-Pole, 63A, Type C, 480V ac AC, 96 V dc DC, 15 kA Breaking
  • RS Stock No. 125-1492
  • Mfr. Part No. 1492-SPM3C630
Subtotal (1 unit)
£120.36(exc. VAT)
£120.36/unit
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 6A, Type C, 240V ac AC, 240 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 265-0177
Subtotal (1 unit)
£16.87(exc. VAT)
£16.87/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 6A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3385
  • Mfr. Part No. A9F54306
Subtotal (1 unit)
£127.00(exc. VAT)
£127.00/unit
In Stock
RS Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 2-Pole, 10A, Type C, 400V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7719
  • Mfr. Part No. 2CDS252001R0104 S202-C10
Subtotal (1 unit)
£42.23(exc. VAT)
£42.23/unit
In Stock
Eaton 16A British Standard Fuse A1 550V ac, 44.5 mm
  • RS Stock No. 414-639
  • Mfr. Part No. NIT16
Subtotal (1 pack of 5 units)
£30.22(exc. VAT)
£30.22/pack
In Stock
RS PRO DHMZ Miniature Circuit Breaker, 2-Pole, 20A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0183
Subtotal (1 unit)
£20.68(exc. VAT)
£20.68/unit
In Stock
Europa EUC3P EUC3P Miniature Circuit Breaker, 3-Pole, 2A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6575
  • Mfr. Part No. EUC3P2C
Subtotal (1 unit)
£22.40(exc. VAT)
£22.40/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 20A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3391
  • Mfr. Part No. A9F54320
Subtotal (1 unit)
£115.41(exc. VAT)
£115.41/unit
In Stock
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)
£121.21(exc. VAT)
£121.21/unit
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