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

28 of 999+
  • RS Stock No. 610-9737
1 Pack of 10
£3.40(exc. VAT)
  • RS Stock No. 736-1428
  • Mfr. Part No. 50-210-06/0.44A
Each
£8.79(exc. VAT)
Better World
  • RS Stock No. 209-6016
  • Mfr. Part No. 5SY6220-7
Each
£46.17(exc. VAT)
  • RS Stock No. 336-012
  • Mfr. Part No. 106-P30-000040-1A
Each
£14.73(exc. VAT)
  • RS Stock No. 563-429
Each (In a Pack of 10)
£0.232(exc. VAT)
  • RS Stock No. 124-3035
  • Mfr. Part No. EMCH116R30C ERBM-16/1/C/003-A
Each
£134.62(exc. VAT)
  • RS Stock No. 798-2209
  • Mfr. Part No. EUB132B
Each
£4.00(exc. VAT)
  • RS Stock No. 622-1089
  • Mfr. Part No. 5SE2325
1 Pack of 10
£10.30(exc. VAT)
  • RS Stock No. 414-213
  • Mfr. Part No. DIN-20-32
Each (In a Pack of 10)
£3.525(exc. VAT)
  • RS Stock No. 541-3108
Each (In a Pack of 10)
£0.324(exc. VAT)
  • RS Stock No. 563-435
Each (In a Pack of 10)
£0.278(exc. VAT)
Better World
  • RS Stock No. 850-8628
  • Mfr. Part No. EZ9F66110
Each
£2.02(exc. VAT)
  • RS Stock No. 229-178
  • Mfr. Part No. C10G32 CYLINDRICAL FUSE 10 x 38 32A GG 400V AC
1 Pack of 10
£6.85(exc. VAT)
  • RS Stock No. 230-2982
  • Mfr. Part No. A214613
1 Pack of 10
£10.80(exc. VAT)
  • RS Stock No. 124-3145
  • Mfr. Part No. 5ST3700
Each
£8.09(exc. VAT)
  • RS Stock No. 668-6098
Each (In a Pack of 10)
£0.509(exc. VAT)
  • RS Stock No. 521-2933
Each (In a Pack of 5)
£4.648(exc. VAT)
  • RS Stock No. 139-883
  • Mfr. Part No. NITD20M25
Each (In a Pack of 5)
£3.72(exc. VAT)
  • RS Stock No. 182-1438
  • Mfr. Part No. TD00-DI
Each
£22.90(exc. VAT)
  • RS Stock No. 852-6932
  • Mfr. Part No. HTB-36I-R
Each
£1.49(exc. VAT)
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