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

367 of 999+
  • RS Stock No. 304-1969
  • Mfr. Part No. T300052
Each
£74.01(exc. VAT)
  • RS Stock No. 260-7650
  • Mfr. Part No. C11N3TM050L
Each
£399.39(exc. VAT)
Better World
  • RS Stock No. 210-9341
  • Mfr. Part No. 3VA9253-0JA12
Each
£21.72(exc. VAT)
  • RS Stock No. 121-002
  • Mfr. Part No. 168301 FRBDM-C20/2/001-G/A
Each
£177.84(exc. VAT)
Better World
  • RS Stock No. 160-195
  • Mfr. Part No. 3RV2421-0BA10
Each
£69.62(exc. VAT)
  • RS Stock No. 203-3262
  • Mfr. Part No. 8GK4501-3KK22
Each
£112.76(exc. VAT)
  • RS Stock No. 210-9382
  • Mfr. Part No. 3VA9387-0SB30
Each
£34.47(exc. VAT)
Better World
  • RS Stock No. 917-6535
  • Mfr. Part No. LT6CT4001
Each
£87.85(exc. VAT)
  • RS Stock No. 217-6376
  • Mfr. Part No. 2800884
Each
£76.04(exc. VAT)
  • RS Stock No. 211-3870
  • Mfr. Part No. 8WH9140-0DA00
Each (In a Pack of 10)
£2.576(exc. VAT)
  • RS Stock No. 201-361
  • Mfr. Part No. 2CDS383001R0984
Each
£125.53(exc. VAT)
  • RS Stock No. 260-8236
  • Mfr. Part No. C63R36M500
Each
£4,974.28(exc. VAT)
  • RS Stock No. 269-7102
  • Mfr. Part No. 3VA9134-0JG11
Each (In a Pack of 4)
£8.05(exc. VAT)
  • RS Stock No. 261-982
  • Mfr. Part No. TBC40
1 Pack of 20
£572.40(exc. VAT)
  • RS Stock No. 210-9425
  • Mfr. Part No. 3VA9987-0UB20
Each
£35.98(exc. VAT)
Better World
  • RS Stock No. 236-6701
  • Mfr. Part No. 1SDA068337R1 XT4H 160 TMA 50A FF
Each
£587.76(exc. VAT)
Better World
  • RS Stock No. 236-6608
  • Mfr. Part No. 1SDA068130R1 XT4N 160 Ekip I 160A FF
Each
£564.09(exc. VAT)
  • RS Stock No. 247-840
  • Mfr. Part No. 12OHGMA10
1 Pack of 3
£549.06(exc. VAT)
  • RS Stock No. 782-8108
  • Mfr. Part No. W31-X2M1G-7.50
Each
£44.93(exc. VAT)
Better World
  • RS Stock No. 249-389
  • Mfr. Part No. 3VA6460-6JQ31-0AA0
Each
£2,894.47(exc. VAT)
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