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

444 of 999+
  • RS Stock No. 256-937
  • Mfr. Part No. 278893 FAZ-D12/3
Each
£152.21(exc. VAT)
  • RS Stock No. 144-4605
  • Mfr. Part No. FD02F2
Each
£269.10(exc. VAT)
  • RS Stock No. 251-2059
  • Mfr. Part No. KN04N
Each
£10.25(exc. VAT)
  • RS Stock No. 127-746
  • Mfr. Part No. 183453 IZMX16H4-P08F-1
Each
£8,036.15(exc. VAT)
  • RS Stock No. 173-8121
  • Mfr. Part No. 3403.0174.24
1 Reel of 2000
£1,101.04(exc. VAT)
  • RS Stock No. 237-5169
  • Mfr. Part No. 2CSR273101R1064
Each
£290.31(exc. VAT)
  • RS Stock No. 339-829
  • Mfr. Part No. SEA9BPN25018S4
Each
£4,677.03(exc. VAT)
  • RS Stock No. 249-172
  • Mfr. Part No. 3VA6610-6JQ46-0AA0
Each
£8,301.94(exc. VAT)
  • RS Stock No. 273-2280
  • Mfr. Part No. 140MT-C-ASA20
Each
£11.95(exc. VAT)
  • RS Stock No. 260-8027
  • Mfr. Part No. C25V4TM160
Each
£2,722.42(exc. VAT)
Better World
  • RS Stock No. 270-3652
  • Mfr. Part No. 3VA2025-6JP32-0AA0
Each
£878.18(exc. VAT)
  • RS Stock No. 260-7666
  • Mfr. Part No. C11N4TM080B
Each
£632.53(exc. VAT)
  • RS Stock No. 852-7250
  • Mfr. Part No. AGC-8-R
Each
£1.55(exc. VAT)
  • RS Stock No. 237-5091
  • Mfr. Part No. 2CSR253101R1505
Each
£350.54(exc. VAT)
  • RS Stock No. 738-2841P
  • Mfr. Part No. 0451.062MRL
Each (Supplied on a Reel)
£3.754(exc. VAT)
Better World
  • RS Stock No. 271-9721
  • Mfr. Part No. 3VA1112-4GD46-0AA0
Each
£456.76(exc. VAT)
Better World
  • RS Stock No. 236-6793
  • Mfr. Part No. 1SDA068532R1 XT4H 160 Ekip LS/I 63A FF
Each
£1,118.90(exc. VAT)
  • RS Stock No. 225-6090
  • Mfr. Part No. 2CSF202001R2630 F202 AC-63/0.1
Each
£131.24(exc. VAT)
Better World
  • RS Stock No. 157-385
  • Mfr. Part No. 3VA2116-8KQ46-0AA0
Each
£1,776.87(exc. VAT)
  • RS Stock No. 252-893
  • Mfr. Part No. 203599 PL-PKZ0
1 Pack of 5
£6.29(exc. VAT)
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