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.

50915 Products showing for Fuses & Circuit Breakers

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Better World
  • RS Stock No. 202-7107
  • Mfr. Part No. 5SL4116-6
Each
£17.98(exc. VAT)
  • RS Stock No. 156-8759
  • Mfr. Part No. 10LCT
Each (In a Pack of 5)
£2.532(exc. VAT)
Better World
  • RS Stock No. 191-6135
  • Mfr. Part No. A9Y12725
Each
£355.38(exc. VAT)
  • RS Stock No. 537-1026
  • Mfr. Part No. S501-10-R
Each (In a Pack of 10)
£1.353(exc. VAT)
  • RS Stock No. 131-498
  • Mfr. Part No. 3404.0015.11
Each (In a Pack of 10)
£0.715(exc. VAT)
  • RS Stock No. 782-0873
  • Mfr. Part No. W23-X1A1G-25
Each
£27.93(exc. VAT)
  • RS Stock No. 122-5278
  • Mfr. Part No. 60290000
Each (In a Pack of 10)
£0.952(exc. VAT)
  • RS Stock No. 177-8136
Each (In a Pack of 20)
£0.651(exc. VAT)
  • RS Stock No. 247-2824
  • Mfr. Part No. L201812
1 Box of 10
£22.63(exc. VAT)
  • RS Stock No. 230-5203
  • Mfr. Part No. 5302027
Each
£33.67(exc. VAT)
  • RS Stock No. 231-9710
  • Mfr. Part No. 2CDS271337R0104 SU201M-C10
1 Box of 1
£37.88(exc. VAT)
  • RS Stock No. 173-8109
  • Mfr. Part No. 3404.2472.22
1 Reel of 1000
£828.43(exc. VAT)
  • RS Stock No. 329-7320
  • Mfr. Part No. G78-16-P2RF-E
Each
£7.96(exc. VAT)
  • RS Stock No. 783-3387
  • Mfr. Part No. 70-059-60/12.5A
Each (In a Pack of 10)
£0.458(exc. VAT)
  • RS Stock No. 232-0241
  • Mfr. Part No. 1SDA067125R1 RC Sel XT1 F
Each
£711.04(exc. VAT)
Better World
  • RS Stock No. 210-1615
  • Mfr. Part No. 3VA1110-6EE42-0AA0
Each
£366.53(exc. VAT)
  • RS Stock No. 136-0523
  • Mfr. Part No. HP10M10
Each (In a Box of 10)
£8.881(exc. VAT)
  • RS Stock No. 125-113
  • Mfr. Part No. 178940 3D-KLV
Each
£3.33(exc. VAT)
Better World
  • RS Stock No. 238-3280
  • Mfr. Part No. A9DK1610
Each
£180.44(exc. VAT)
  • RS Stock No. 517-6629
  • Mfr. Part No. RXEF040
Each (In a Pack of 10)
£0.39(exc. VAT)
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