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

477 of 999+
  • RS Stock No. 257-078
  • Mfr. Part No. 281307 NZMH2-M125
Each
£931.12(exc. VAT)
  • RS Stock No. 876-1942P
  • Mfr. Part No. 3404.2472.22
Each (Supplied on a Reel)
£0.965(exc. VAT)
  • RS Stock No. 664-352
  • Mfr. Part No. 5SY6620-6
Each
£98.33(exc. VAT)
  • RS Stock No. 201-6938
  • Mfr. Part No. 2CSR255180R1104 DS201 C10 A30
Each
£158.75(exc. VAT)
  • RS Stock No. 218-1886
  • Mfr. Part No. 8GB5002-5KM01
Each
£47.01(exc. VAT)
  • RS Stock No. 169-9359
  • Mfr. Part No. TDC10-250MA
1 Bag of 1000
£377.11(exc. VAT)
  • RS Stock No. 299-072
  • Mfr. Part No. 1SNF100024R0000
Each
£4.49(exc. VAT)
  • RS Stock No. 878-3302
  • Mfr. Part No. L60030M2SQ
Each
£13.15(exc. VAT)
Better World
  • RS Stock No. 238-3502
  • Mfr. Part No. A9Y15725
Each
£352.12(exc. VAT)
  • RS Stock No. 435-368
  • Mfr. Part No. 2CCG001226R0001
Each
£96.68(exc. VAT)
Better World
  • RS Stock No. 245-542
  • Mfr. Part No. 3VA6160-0HL31-0AA0
Each
£761.77(exc. VAT)
Better World
  • RS Stock No. 212-8840
  • Mfr. Part No. 5SY4563-8
Each
£128.82(exc. VAT)
  • RS Stock No. 195-8750
  • Mfr. Part No. NIS6150MT2TXG
Each (On a Reel of 3000)
£0.543(exc. VAT)
  • RS Stock No. 229-193
  • Mfr. Part No. C14G6S CYL FUSE >STR >14 x 51 6A GG 690V AC
1 Pack of 10
£57.58(exc. VAT)
  • RS Stock No. 490-232
  • Mfr. Part No. 236378 PXL-B6/3
Each
£54.09(exc. VAT)
  • RS Stock No. 852-7411
  • Mfr. Part No. GDC-100MA
Each (In a Pack of 5)
£7.172(exc. VAT)
Better World
  • RS Stock No. 189-3188
  • Mfr. Part No. 5SL6116-6
Each
£4.06(exc. VAT)
  • RS Stock No. 692-5071P
  • Mfr. Part No. SF-1206S700-2
Each (Supplied on a Reel)
£0.313(exc. VAT)
  • RS Stock No. 203-652
  • Mfr. Part No. 2CDS274337R0154
Each
£189.51(exc. VAT)
  • RS Stock No. 232-2052
  • Mfr. Part No. 3NW6301-1
Each (In a Pack of 10)
£3.99(exc. VAT)
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