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

91 of 999+
In Stock
  • RS Stock No. 182-1488
  • Mfr. Part No. TI600
Each
HK$948.30
Temporarily out of stock
  • RS Stock No. 200-971
  • Mfr. Part No. 2CDS271001R0981
Each
HK$931.40
Temporarily out of stock
  • RS Stock No. 335-076
  • Mfr. Part No. KSB250SM428
Each
HK$19,456.80
In Stock
  • RS Stock No. 122-5269
  • Mfr. Part No. 60120032
Each (In a Pack of 10)
HK$10.23
Temporarily out of stock
  • RS Stock No. 117-691
  • Mfr. Part No. FP 1319
Each
HK$3,095.80
Temporarily out of stock
  • RS Stock No. 216-8304
  • Mfr. Part No. SG23PA300
Each
HK$2,138.56
Temporarily out of stock
  • RS Stock No. 216-8278
  • Mfr. Part No. FB01D2P
Each
HK$170.90
Temporarily out of stock
  • RS Stock No. 590-004
  • Mfr. Part No. LA9ZX01131
1 Pack of 10
HK$1,914.40
Temporarily out of stock
  • RS Stock No. 249-461
  • Mfr. Part No. 3VA6560-7HM46-2AA0
Each
HK$57,255.10
In Stock
  • RS Stock No. 245-9204P
  • Mfr. Part No. SF-0603SPA300R-2
Each (Supplied on a Reel)
HK$8.99
In Stock
Better World
  • RS Stock No. 791-2802
  • Mfr. Part No. A9A26969
Each
HK$1,230.40
Temporarily out of stock
  • RS Stock No. 266-505
  • Mfr. Part No. 8US1313-4AM04
Each
HK$2,841.10
Temporarily out of stock
  • RS Stock No. 140-722
  • Mfr. Part No. 2CCS864001R0324
Each
HK$7,779.02
Temporarily out of stock
  • RS Stock No. 608-847
  • Mfr. Part No. 3NE9450
1 Pack of 3
HK$5,617.90
Temporarily out of stock
  • RS Stock No. 201-6904
  • Mfr. Part No. 2CSR255080R2064
Each
HK$1,414.69
Temporarily out of stock
  • RS Stock No. 341-224
  • Mfr. Part No. C50F4TM400D3
Each
HK$46,355.15
Temporarily out of stock
Better World
  • RS Stock No. 219-9291
  • Mfr. Part No. A9F94463
Each
HK$4,717.00
In Stock
  • RS Stock No. 201-007
  • Mfr. Part No. 2CDS272061R0104
Each
HK$1,813.14
Temporarily out of stock
  • RS Stock No. 358-215
  • Mfr. Part No. BGL36070LU
Each
HK$10,056.10
In Stock
  • RS Stock No. 270-3079
  • Mfr. Part No. M214670
Each
HK$210.78
Results per page