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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

52863 Products showing for Fuses & Circuit Breakers

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In Stock
ABB System Pro M Compact System Pro M Compact Miniature Circuit Breaker, 1-Pole, 10A, Type C, 253V ac AC, 72 V dc DC, 6
  • RS Stock No. 488-6836
  • Mfr. Part No. 2CDS251001R0104 - S201C10
Subtotal (1 unit)
£16.45(exc. VAT)
£16.45/unit
In Stock
RS Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 2-Pole, 6A, Type D, 400V ac AC, 125 V dc DC, 10 kA Breaking
  • RS Stock No. 746-7854
  • Mfr. Part No. 2CDS252001R0061 S202-D6
Subtotal (1 unit)
£47.25(exc. VAT)
£47.25/unit
In Stock
Europa EUC1P EUC1P Miniature Circuit Breaker, 1-Pole, 1A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6493
  • Mfr. Part No. EUC1P1C
Subtotal (1 unit)
£5.61(exc. VAT)
£5.61/unit
In Stock
RS PRO Rail Mount Fuse Holder for 5 x 25 mm, 24V
  • RS Stock No. 501-871
Subtotal (1 unit)
£10.40(exc. VAT)
£10.40/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 3-Pole, 40A, Type D, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3578
  • Mfr. Part No. A9F55340
Subtotal (1 unit)
£132.75(exc. VAT)
£132.75/unit
In Stock
RS Better World
ABB ComPact Home SH200 Miniature Circuit Breaker, 3-Pole, 32A, Type C, 440V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 539-8374
  • Mfr. Part No. 2CDS213001R0324 SH203-C32
Subtotal (1 unit)
£55.91(exc. VAT)
£55.91/unit
In Stock
TE Connectivity W58 Thermal Circuit Breaker -, 5A Current Rating 1-Pole, Direct
  • RS Stock No. 782-0915
  • Mfr. Part No. W58-XB1A4A-5
Subtotal (1 unit)
£6.27(exc. VAT)
£6.27/unit
In Stock
ABB SN201L SN201 Miniature Circuit Breaker, 1-Pole, 2A, Type C, 230V ac AC, 4.5 kA Breaking Capacity
  • RS Stock No. 191-9456
  • Mfr. Part No. 2CSS245102R0024 SN201 L C2-L
Subtotal (1 unit)
£14.26(exc. VAT)
£14.26/unit
In Stock
Rittal Earth Bar L. 450 mm x W. 15mm x H. 5 mm
  • RS Stock No. 826-2868
  • Mfr. Part No. 7113000
Subtotal (1 unit)
£36.33(exc. VAT)
£36.33/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
RS Better World
Siemens SENTRON 5SY4 Miniature Circuit Breaker, 3-Pole, 40A, Type C, 400V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 124-3177
  • Mfr. Part No. 5SY4340-7
Subtotal (1 unit)
£90.92(exc. VAT)
£90.92/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 32A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3304
  • Mfr. Part No. A9F54132
Subtotal (1 unit)
£27.51(exc. VAT)
£27.51/unit
In Stock
RS PRO Residual Current Circuit Breaker, 16A, 2-Pole, 10 mA, Type A 230V ac
  • RS Stock No. 284-2366
Subtotal (1 unit)
£36.73(exc. VAT)
£36.73/unit
In Stock
Schneider Electric TeSys TeSyS GV Thermal Circuit Breaker -, 65A Current Rating 3-Pole, Direct
  • RS Stock No. 272-937
  • Mfr. Part No. GV3P65
Subtotal (1 unit)
£250.83(exc. VAT)
£250.83/unit
In Stock
RS PRO 10A T Ceramic Cartridge Fuse, 6.3 x 32 mm
  • RS Stock No. 414-061
Subtotal (1 pack of 10 units)
£14.09(exc. VAT)
£14.09/pack
In Stock
Europa EUC2P EUC2P Miniature Circuit Breaker, 2-Pole, 10A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6547
  • Mfr. Part No. EUC2P10C
Subtotal (1 unit)
£15.36(exc. VAT)
£15.36/unit
In Stock
Europa EUC2P EUC2P Miniature Circuit Breaker, 2-Pole, 16A, Type C, 400V ac AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6541
  • Mfr. Part No. EUC2P16C
Subtotal (1 unit)
£15.36(exc. VAT)
£15.36/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 2-Pole, 6A, Type C, 12V, 133 V, 220 V, 240 V, 380 V, 415 V,
  • RS Stock No. 791-3332
  • Mfr. Part No. A9F54206
Subtotal (1 unit)
£86.57(exc. VAT)
£86.57/unit
In Stock
RS PRO 63A British Standard Fuse A3 550V ac, 73.5 mm
  • RS Stock No. 521-2652
Subtotal (1 pack of 5 units)
£52.95(exc. VAT)
£10.59/unit
In Stock
Schneider Electric R9R Series Residual Current Circuit Breaker, 25A, 2-Pole, 30 mA, Type A 230V ac
  • RS Stock No. 654-672
  • Mfr. Part No. R9R22225
Subtotal (1 unit)
£78.00(exc. VAT)
£78.00/unit
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