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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
Eaton 2A British Standard Fuse F1 550V ac
  • RS Stock No. 413-462
  • Mfr. Part No. NSD2
Subtotal (1 pack of 5 units)
£24.85(exc. VAT)
£4.97/unit
In Stock
RS PRO Miniature Circuit Breaker, 3-Pole, 20A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0207
Subtotal (1 unit)
£30.23(exc. VAT)
£30.23/unit
In Stock
RS Better World
Siemens SENTRON 5SY6 Miniature Circuit Breaker, 1-Pole, 1A, Type C, 400V ac AC, 72 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 521-4917
  • Mfr. Part No. 5SY6101-7
Subtotal (1 unit)
£20.07(exc. VAT)
£20.07/unit
In Stock
Europa Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 2-Pole, 30 mA Trip Sensitivity,
  • RS Stock No. 210-4729
  • Mfr. Part No. EUBLMC16B30A
Subtotal (1 unit)
£69.96(exc. VAT)
£69.96/unit
In Stock
Eaton 80A British Standard Fuse A4 500V ac, 94 mm
  • RS Stock No. 413-535
  • Mfr. Part No. CEO80
Subtotal (1 unit)
£17.09(exc. VAT)
£17.09/unit
In Stock
RS PRO 20A British Standard Fuse A2 550V ac, 73 mm
  • RS Stock No. 521-2595
Subtotal (1 pack of 5 units)
£28.61(exc. VAT)
£5.722/unit
In Stock
RS PRO 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 Acti9 iDT40K Miniature Circuit Breaker, 1-Pole, 2A, Type C, 230V ac AC, 4.5 kA Breaking
  • RS Stock No. 238-3409
  • Mfr. Part No. A9P71602
Subtotal (1 unit)
£34.15(exc. VAT)
£34.15/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
Eaton xEffect FAZ Miniature Circuit Breaker, 1-Pole, 6A, Type B, 240V ac AC, 48 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6967
  • Mfr. Part No. 278529 FAZ-B6/1
Subtotal (1 unit)
£26.21(exc. VAT)
£26.21/unit
In Stock
Schneider Electric Acti9 iC60H Miniature Circuit Breaker, 1-Pole, 1A, Type C, 240V ac AC, 48 V dc DC, 10 kA Breaking
  • RS Stock No. 791-3275
  • Mfr. Part No. A9F54101
Subtotal (1 unit)
£39.05(exc. VAT)
£39.05/unit
In Stock
Schneider Electric Linergy Linergy 3 Phase Busbar, 690 V, 45 mm Pitch
  • RS Stock No. 400-2000
  • Mfr. Part No. GV2G445
Subtotal (1 unit)
£21.55(exc. VAT)
£21.55/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
RS Better World
ABB System Pro M Compact S200M Miniature Circuit Breaker, 4-Pole, 32A, Type C, 125V ac AC, 440 V dc DC, 25 kA Breaking
  • RS Stock No. 231-9775
  • Mfr. Part No. 2CDS274001R0324 S204M C 32A - 15 KA
Subtotal (1 box of 1 unit)
£131.63(exc. VAT)
£131.63/box
In Stock
ABB Residual Current Circuit Breaker with Overload Protection, 16A Current Rating, 4-Pole, 30 mA Trip Sensitivity, Type
  • RS Stock No. 231-9957
  • Mfr. Part No. 2CSR256140R1164 DS203NC C16 A30
Subtotal (1 unit)
£184.56(exc. VAT)
£184.56/unit
In Stock
RS Better World
ABB System Pro M Compact S200 Miniature Circuit Breaker, 2-Pole, 10A, Type K, 400V ac AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7999
  • Mfr. Part No. 2CDS252001R0427 S202-K10
Subtotal (1 unit)
£59.06(exc. VAT)
£59.06/unit
In Stock
RS PRO Miniature Circuit Breaker, 3-Pole, 63A, Type C, 240V ac AC, 240 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 265-0210
Subtotal (1 unit)
£36.35(exc. VAT)
£36.35/unit
In Stock
RS PRO Fuse Kit
  • RS Stock No. 918-2697
Subtotal (1 unit)
£71.17(exc. VAT)
£71.17/unit
In Stock
RS Better World
Siemens SENTRON 5SL6 Miniature Circuit Breaker, 1-Pole, 2A, Type B, 400V ac AC, 72 V dc DC, 6 kA Breaking Capacity
  • RS Stock No. 202-7188
  • Mfr. Part No. 5SL6102-6
Subtotal (1 unit)
£16.57(exc. VAT)
£16.57/unit
In Stock
Eaton xEffect xEffect Miniature Circuit Breaker, 1-Pole, 4A, Type C, 230V ac AC, 60 V dc DC, 10 kA Breaking Capacity
  • RS Stock No. 624-0327
  • Mfr. Part No. 278553 FAZ-C4/1
Subtotal (1 unit)
£27.57(exc. VAT)
£27.57/unit
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