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.

50914 Products showing for Fuses & Circuit Breakers

246 of 999+
  • RS Stock No. 228-948
  • Mfr. Part No. FNQ-1-1/4
1 Pack of 10
£452.63(exc. VAT)
  • RS Stock No. 228-622
  • Mfr. Part No. AAO32 32A 550V AC BS88 gG FUSE
1 Pack of 20
£228.14(exc. VAT)
  • RS Stock No. 180-6109
  • Mfr. Part No. 0 130 06
Each (In a Box of 10)
£1.736(exc. VAT)
  • RS Stock No. 240-9263
  • Mfr. Part No. IK8805.01 AC50Hz 230V
Each
£85.01(exc. VAT)
  • RS Stock No. 622-1124
  • Mfr. Part No. 5SE2350
Each (In a Pack of 10)
£1.616(exc. VAT)
  • RS Stock No. 738-2980P
  • Mfr. Part No. 0452007.MRL
Each (Supplied on a Reel)
£1.228(exc. VAT)
  • RS Stock No. 769-0161
  • Mfr. Part No. 81500000005
Each (In a Pack of 5)
£2.612(exc. VAT)
  • RS Stock No. 412-914
  • Mfr. Part No. TDC10-4A
Each (In a Pack of 10)
£0.383(exc. VAT)
Better World
  • RS Stock No. 482-465
  • Mfr. Part No. DF223NC
Each
£72.91(exc. VAT)
  • RS Stock No. 174-0887
  • Mfr. Part No. 39211000000
Each (In a Pack of 10)
£0.739(exc. VAT)
Better World
  • RS Stock No. 211-2394
  • Mfr. Part No. M9F23205
Each
£91.85(exc. VAT)
  • RS Stock No. 597-877
  • Mfr. Part No. CDF769F
Each
£190.16(exc. VAT)
  • RS Stock No. 232-0179
  • Mfr. Part No. 1SDA066422R1 AUX 250V XT1..XT4
Each
£25.87(exc. VAT)
  • RS Stock No. 191-4191
  • Mfr. Part No. SF-2410HI050T-2
Each (On a Reel of 1000)
£0.459(exc. VAT)
Better World
  • RS Stock No. 212-1621
  • Mfr. Part No. 2CDS252280R0104
Each
£40.04(exc. VAT)
  • RS Stock No. 269-3815
  • Mfr. Part No. 3101.0310
Each
£2.33(exc. VAT)
  • RS Stock No. 181-8460
  • Mfr. Part No. 16LET
Each (In a Box of 10)
£23.666(exc. VAT)
Better World
  • RS Stock No. 482-689
  • Mfr. Part No. DF222
Each
£48.60(exc. VAT)
  • RS Stock No. 654-751
  • Mfr. Part No. A9TDFD632
Each
£429.96(exc. VAT)
  • RS Stock No. 284-5316
  • Mfr. Part No. 0034.6613
Each (In a Pack of 10)
£0.369(exc. VAT)
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