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

33 of 999+
  • RS Stock No. 230-1100
  • Mfr. Part No. 264691 PLG6-C4/1N
Each
£15.25(exc. VAT)
Better World
  • RS Stock No. 746-7999
  • Mfr. Part No. 2CDS252001R0427 S202-K10
Each
£59.06(exc. VAT)
  • RS Stock No. 418-9618
  • Mfr. Part No. 70-059-61/10A
1 Pack of 10
£6.06(exc. VAT)
  • RS Stock No. 247-3983
Each (In a Pack of 10)
£1.02(exc. VAT)
  • RS Stock No. 537-1379
  • Mfr. Part No. S506-1-R
Each (In a Pack of 10)
£0.208(exc. VAT)
Better World
  • RS Stock No. 489-6596
  • Mfr. Part No. 5SY6116-7
Each
£16.72(exc. VAT)
  • RS Stock No. 380-9923
  • Mfr. Part No. 177.5701.0001
Each
£24.92(exc. VAT)
  • RS Stock No. 174-0633
  • Mfr. Part No. 04980921GXM5
1 Pack of 1
£6.24(exc. VAT)
  • RS Stock No. 226-0850
  • Mfr. Part No. 157.5701.6121
Each
£7.33(exc. VAT)
  • RS Stock No. 725-8057
  • Mfr. Part No. 0218.032MXP
Each (In a Bag of 10)
£2.309(exc. VAT)
  • RS Stock No. 187-807
  • Mfr. Part No. 99217
Each
£36.96(exc. VAT)
  • RS Stock No. 412-554
  • Mfr. Part No. TDC180-2A
Each (In a Pack of 10)
£0.455(exc. VAT)
  • RS Stock No. 865-7825
  • Mfr. Part No. 0034.4224
Each (In a Pack of 10)
£1.995(exc. VAT)
  • RS Stock No. 668-6007
Each (In a Pack of 10)
£0.306(exc. VAT)
  • RS Stock No. 267-3515
  • Mfr. Part No. 70-010-05/4A
Each (In a Pack of 5)
£4.022(exc. VAT)
  • RS Stock No. 270-3107
  • Mfr. Part No. R227899
Each
£32.69(exc. VAT)
  • RS Stock No. 914-4364
  • Mfr. Part No. ATQR10
Each
£23.39(exc. VAT)
  • RS Stock No. 156-8793
  • Mfr. Part No. 25LET
Each
£14.36(exc. VAT)
  • RS Stock No. 847-3557
  • Mfr. Part No. 278897 FAZ-D20/3
Each
£99.98(exc. VAT)
  • RS Stock No. 537-1458
  • Mfr. Part No. S505-1-R
1 Pack of 10
£2.27(exc. VAT)
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