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.

50957 Products showing for Fuses & Circuit Breakers

690 of 999+
  • RS Stock No. 257-558
  • Mfr. Part No. 3VA5580-5EC32-1AA0
Each
£6,279.99
  • RS Stock No. 231-9350
  • Mfr. Part No. 1SDA100741R1 XT6S 800 EkipDip LS/I 800
Each
£1,841.34
  • RS Stock No. 767-4403
  • Mfr. Part No. 2CSR273001R1164 DS203 M AC-C16/0,03
Each
£262.95
  • RS Stock No. 375-9496
  • Mfr. Part No. G213170
Each (In a Pack of 10)
£2.856
  • RS Stock No. 250-4525
  • Mfr. Part No. 1SDA051360R1
Each
£324.13
Better World
  • RS Stock No. 249-376
  • Mfr. Part No. 3VA6460-0HL41-0AA0
Each
£3,758.27
  • RS Stock No. 429-489
  • Mfr. Part No. BDL26110LU
Each
£655.43
  • RS Stock No. 654-753
  • Mfr. Part No. EZ9TDA7610
Each
£177.24
Better World
  • RS Stock No. 212-0245
  • Mfr. Part No. LV431521
Each
£1,335.01
  • RS Stock No. 159-422
  • Mfr. Part No. 3RV2901-2B
Each
£9.78
  • RS Stock No. 210-2124
  • Mfr. Part No. ESX10-TA-100-DC24V-2A-E
Each
£73.37
  • RS Stock No. 254-534
  • Mfr. Part No. 265856 NZMB2-4-A250/160
Each
£1,419.22
  • RS Stock No. 260-7929
  • Mfr. Part No. C25L3
Each
£1,429.06
  • RS Stock No. 249-183
  • Mfr. Part No. 3VA6610-7JT32-0AA0
Each
£6,054.13
  • RS Stock No. 232-136
  • Mfr. Part No. 116526 XLSPP204
Each
£61.05
  • RS Stock No. 121-001
  • Mfr. Part No. 168300 FRBDM-C16/2/001-G/A
Each
£164.16
Better World
  • RS Stock No. 238-3342
  • Mfr. Part No. A9DV3732
Each
£431.22
  • RS Stock No. 300-084
  • Mfr. Part No. 5SJ4350-7HG41
Each
£470.03
  • RS Stock No. 266-1334
  • Mfr. Part No. 408067
Each
£160.22
  • RS Stock No. 250-8644
  • Mfr. Part No. LF525G
Each (In a Pack of 10)
£7.217
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