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

2263 of 999+
  • RS Stock No. 231-671
  • Mfr. Part No. 110898 NZMH3-VE400-T
Each
HK$30,590.00
Better World
  • RS Stock No. 260-485
  • Mfr. Part No. 3VA6325-6JQ41-2AA0
Each
HK$43,025.00
  • RS Stock No. 789-2938
  • Mfr. Part No. 11SMX9034
Each
HK$270.61
Better World
  • RS Stock No. 210-1738
  • Mfr. Part No. 3VA2340-6HL42-0AA0
Each
HK$22,863.80
  • RS Stock No. 230-026
  • Mfr. Part No. 110304 NZMN3-A500-BT
Each
HK$25,660.63
Better World
  • RS Stock No. 245-752
  • Mfr. Part No. 3VA6140-6JQ41-2AA0
Each
HK$26,840.40
  • RS Stock No. 272-0358
  • Mfr. Part No. 8GK9910-0KK28
1 Set
HK$343.50
Better World
  • RS Stock No. 202-7242
  • Mfr. Part No. 5SV6016-7KK40
Each
HK$1,827.80
  • RS Stock No. 304-2221
  • Mfr. Part No. A300081
Each
HK$2,646.20
  • RS Stock No. 611-0260
Each (In a Pack of 10)
HK$7.46
  • RS Stock No. 275-0278
  • Mfr. Part No. IUGN1-1-72-30.0
Each
HK$556.00
Better World
  • RS Stock No. 196-3582
  • Mfr. Part No. 3VA63251MS310AA0
Each
HK$21,835.40
  • RS Stock No. 521-2523
Each (In a Pack of 5)
HK$38.94
Better World
  • RS Stock No. 211-2657
  • Mfr. Part No. LV432461
Each
HK$270.94
  • RS Stock No. 260-762
  • Mfr. Part No. 7.2WFNHA80 7.2KV 80A 3"MOTOR START FUSE
1 Pack of 3
HK$17,552.80
  • RS Stock No. 246-129
  • Mfr. Part No. 132735 FAZ-B4/1-RT
Each
HK$328.31
  • RS Stock No. 537-5674
  • Mfr. Part No. 259766 NZM2/3-XA380-440AC/DC
Each
HK$1,205.50
  • RS Stock No. 229-159
  • Mfr. Part No. 20H07-660
1 Pack of 20
HK$8,614.00
  • RS Stock No. 284-6044
  • Mfr. Part No. 4410.0327
Each
HK$201.31
Better World
  • RS Stock No. 237-3253
  • Mfr. Part No. 2CDS253103R0021
Each
HK$2,199.78
Results per page