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

47266 Products showing for Fuses & Circuit Breakers

18 of 999+
  • RS Stock No. 787-4316
  • Mfr. Part No. 03540821ZXBL
Each (In a Pack of 5)
HK$9.14
  • RS Stock No. 210-4747
  • Mfr. Part No. EUR125.30/2A
Each
HK$332.90
  • RS Stock No. 783-3315
  • Mfr. Part No. 70-007-65/4A
Each (In a Pack of 10)
HK$7.09
Better World
  • RS Stock No. 746-7712
  • Mfr. Part No. 2CDS252001R0134 S202-C13
Each
HK$399.40
  • RS Stock No. 537-1638
  • Mfr. Part No. S506-250-R
Each (In a Pack of 10)
HK$4.33
Better World
  • RS Stock No. 254-6353
  • Mfr. Part No. C25F32D250
Each
HK$17,142.08
  • RS Stock No. 284-6487
Each (In a Pack of 10)
HK$21.461
  • RS Stock No. 337-1995
  • Mfr. Part No. 3101.0030
Each (In a Pack of 5)
HK$23.82
  • RS Stock No. 263-407
  • Mfr. Part No. TIA10
1 Pack of 20
HK$2,123.30
  • RS Stock No. 339-825
  • Mfr. Part No. SEA9BPN12M
Each
HK$9,548.20
Better World
  • RS Stock No. 734-9129
  • Mfr. Part No. A9R11425
Each
HK$2,235.70
Better World
  • RS Stock No. 210-3406
  • Mfr. Part No. 5SY5102-6
Each
HK$436.70
Better World
  • RS Stock No. 202-7109
  • Mfr. Part No. 5SY5102-7
Each
HK$685.50
  • RS Stock No. 893-8546
Each
HK$487.20
  • RS Stock No. 563-750
Each (In a Pack of 10)
HK$4.17
Better World
  • RS Stock No. 175-1435
  • Mfr. Part No. GV4L12N
Each
HK$6,318.90
  • RS Stock No. 246-2513
  • Mfr. Part No. 2CCS571001R1208
Each
HK$804.20
  • RS Stock No. 139-956
  • Mfr. Part No. DEO125
Each
HK$172.90
  • RS Stock No. 385-7893
  • Mfr. Part No. GMA-4A-BK
Each (In a Pack of 10)
HK$2.71
  • RS Stock No. 537-7456
  • Mfr. Part No. 2CSF204001R3400 F204 AC-40/0,3
Each
HK$836.00
Results per page