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

386 of 999+
  • RS Stock No. 541-3625P
  • Mfr. Part No. 0452001.MRL
Each (Supplied on a Reel)
£2.142(exc. VAT)
Better World
  • RS Stock No. 271-9469
  • Mfr. Part No. 3VA1196-6ED36-0AA0
Each
£227.01(exc. VAT)
  • RS Stock No. 251-3436
  • Mfr. Part No. 1SCA022627R1550
1 Box of 9
£38.13(exc. VAT)
  • RS Stock No. 249-200
  • Mfr. Part No. 3VA6610-6JT46-0AA0
Each
£8,069.17(exc. VAT)
  • RS Stock No. 203-2053
  • Mfr. Part No. 3NA7812
Each (In a Pack of 3)
£5.397(exc. VAT)
  • RS Stock No. 563-425A
Each (In a Pack of 100)
£0.223(exc. VAT)
  • RS Stock No. 221-5590
  • Mfr. Part No. 3-128-201
Each
£8.95(exc. VAT)
Better World
  • RS Stock No. 282-6524
  • Mfr. Part No. PV-250A-3L-B-15
Each
£358.53(exc. VAT)
  • RS Stock No. 120-829
  • Mfr. Part No. 158245 PKE32/AK
Each
£64.13(exc. VAT)
Better World
  • RS Stock No. 210-9429
  • Mfr. Part No. 3VA9988-0BL32
Each
£59.93(exc. VAT)
  • RS Stock No. 878-1271
  • Mfr. Part No. 0273.200V
Each
£11.95(exc. VAT)
  • RS Stock No. 627-033
  • Mfr. Part No. 3NB1334-4KK11
1 Pack of 2
£743.71(exc. VAT)
  • RS Stock No. 239-9991
  • Mfr. Part No. A9TAA1625
Each
£294.20(exc. VAT)
  • RS Stock No. 250-156
  • Mfr. Part No. 3VA6580-6KQ42-2AA0
Each
£6,797.77(exc. VAT)
  • RS Stock No. 259-3315
  • Mfr. Part No. 1SDA071223R1
Each
£20,221.39(exc. VAT)
  • RS Stock No. 254-6337
  • Mfr. Part No. C1632M150
Each
£432.46(exc. VAT)
  • RS Stock No. 201-6959
  • Mfr. Part No. 2CSR275180R1165 DS201 M B16 A30
Each
£139.96(exc. VAT)
  • RS Stock No. 339-663
  • Mfr. Part No. PJA36000S60
Each
£2,023.78(exc. VAT)
  • RS Stock No. 703-8699
  • Mfr. Part No. 100NHG01B
Each
£8.01(exc. VAT)
  • RS Stock No. 212-022
  • Mfr. Part No. R9D01625
Each
£60.40(exc. VAT)
Results per page