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

231 of 999+
  • RS Stock No. 414-695
  • Mfr. Part No. TIS63M80
Each
£24.58(exc. VAT)
Better World
  • RS Stock No. 489-6530
  • Mfr. Part No. 5SY6106-6
Each
£17.38(exc. VAT)
  • RS Stock No. 238-3981
  • Mfr. Part No. B220962
Each
£35.83(exc. VAT)
  • RS Stock No. 121-213
  • Mfr. Part No. 167888 FRCDM-25/4/03-S/B+
Each
£766.08(exc. VAT)
Better World
  • RS Stock No. 622-0020
  • Mfr. Part No. 5SY4103-7
Each
£22.02(exc. VAT)
  • RS Stock No. 922-7005
  • Mfr. Part No. 278559 FAZ-C13/1
Each
£22.85(exc. VAT)
  • RS Stock No. 229-014
  • Mfr. Part No. CH142DU 2P 14x51 Fuse Holder
1 Pack of 3
£69.10(exc. VAT)
  • RS Stock No. 246-2689
  • Mfr. Part No. 2CCS573103R8505
Each
£178.13(exc. VAT)
Better World
  • RS Stock No. 211-3797
  • Mfr. Part No. 3VA2225-6JQ32-0AA0
Each
£1,635.82(exc. VAT)
  • RS Stock No. 136-0528
  • Mfr. Part No. HP10M2
Each (In a Box of 10)
£10.439(exc. VAT)
  • RS Stock No. 237-5146
  • Mfr. Part No. 2CSR272101R1504
Each
£290.31(exc. VAT)
Better World
  • RS Stock No. 157-277
  • Mfr. Part No. 3VA2125-5MN36-0AA0
Each
£397.15(exc. VAT)
Better World
  • RS Stock No. 232-0344
  • Mfr. Part No. 2CSS255101R0204 SN201-C20
Each
£33.49(exc. VAT)
  • RS Stock No. 240-8274
1 Tape of 1000
£2,061.96(exc. VAT)
Better World
  • RS Stock No. 124-3157
  • Mfr. Part No. 5SY4150-8
Each
£44.04(exc. VAT)
  • RS Stock No. 182-1635
  • Mfr. Part No. 80ET
Each
£22.70(exc. VAT)
  • RS Stock No. 377-0178
  • Mfr. Part No. J322169
Each
£36.71(exc. VAT)
  • RS Stock No. 231-9296
  • Mfr. Part No. 1SDA066913R1 FC Cu XT3 3PCS
Each
£17.13(exc. VAT)
  • RS Stock No. 232-0341
  • Mfr. Part No. 2CSF202101R1630 F202 A-63/0.03
Each
£188.12(exc. VAT)
  • RS Stock No. 339-510
  • Mfr. Part No. SEE120C03
Each
£132.10(exc. VAT)
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