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.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses

47265 Products showing for Fuses & Circuit Breakers

42 of 999+
  • RS Stock No. 852-7064
  • Mfr. Part No. MDA-2-1-2-R
Each
HK$44.80
  • RS Stock No. 647-8415
  • Mfr. Part No. MF-R010
Each (In a Pack of 10)
HK$2.26
  • RS Stock No. 259-3418
  • Mfr. Part No. 1SDA071352R1
Each
HK$58,528.42
  • RS Stock No. 535-4318
  • Mfr. Part No. 2CDS273001R0324 S203M-C32
Each
HK$702.70
  • RS Stock No. 851-1514
  • Mfr. Part No. AGA-5
Each
HK$24.30
  • RS Stock No. 254-4865
  • Mfr. Part No. 3061334
Each (In a Pack of 10)
HK$98.95
  • RS Stock No. 849-6033
  • Mfr. Part No. GDA-630MA
Each (In a Pack of 5)
HK$43.38
  • RS Stock No. 851-1508
  • Mfr. Part No. AGA-2
Each
HK$26.30
  • RS Stock No. 167-4519
  • Mfr. Part No. MF-SMDF150-2
Each (On a Reel of 6000)
HK$2.671
  • RS Stock No. 174-0855
  • Mfr. Part No. RF1180-000
Each (In a Pack of 10)
HK$3.63
  • RS Stock No. 746-8131
  • Mfr. Part No. 2CDS271001R0101 S201M-D10
Each
HK$255.00
  • RS Stock No. 787-4246
  • Mfr. Part No. 0239003.MXP
Each (In a Pack of 10)
HK$5.34
  • RS Stock No. 893-8546
Each
HK$487.20
  • RS Stock No. 257-255
  • Mfr. Part No. 3VA5320-5GC41-0AA0
Each
HK$12,000.20
  • RS Stock No. 276-8967
  • Mfr. Part No. R9PFC716
Each
HK$873.59
  • RS Stock No. 563-750
Each (In a Pack of 10)
HK$4.17
Better World
  • RS Stock No. 874-4177
  • Mfr. Part No. 3VA1112-3EF36-0AA0
Each
HK$3,280.90
Better World
  • RS Stock No. 874-4203
  • Mfr. Part No. 3VA1116-3EE36-0AA0
Each
HK$4,890.60
  • RS Stock No. 266-646
  • Mfr. Part No. 8UC7121-8BD15
Each
HK$1,155.20
  • RS Stock No. 219-3592
  • Mfr. Part No. 0299060.TXN
Each (In a Pack of 10)
HK$23.51
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