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

46580 Products showing for Fuses & Circuit Breakers

69 / 999+
Schneider Electric Feed Unit, Canalis Series
  • RS Stock No. 214-790
  • Mfr. Part No. KSA400ABGD4
Each
MYR12,919.16
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 131-431
  • Mfr. Part No. 2801512
Each
MYR1,141.46
WJ Furse Copper Earth Bar L. 900mm x W. 90mm x H. 96mm 12 Ways
  • RS Stock No. 124-2507
  • Mfr. Part No. 7TCA083670R0605 LK207-12
Each
MYR2,203.00
Littelfuse SMD Non Resettable Fuse 3A, 32V
  • RS Stock No. 738-3264
  • Mfr. Part No. 0468003.NR
Each (In a Pack of 10)
MYR4.128
Lovato 100A Base Mount Fuse Holder for 22 x 58mm Fuse, 3P, 690V ac
  • RS Stock No. 188-1629
  • Mfr. Part No. FB03A3P
Each
MYR551.31
Eaton 2A T Phenolic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7134
  • Mfr. Part No. HVI-HH-R
Each
MYR19.27
WJ Furse Copper Earth Bar L. 550mm x W. 90mm x H. 96mm 6 Ways
  • RS Stock No. 124-2504
  • Mfr. Part No. 7TCA083670R0632 LK207-6
Each
MYR1,362.41
ABB System Pro M Compact S200 MCB, 3P, 4A, Type Z, 400V AC, 110V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-264
  • Mfr. Part No. 2CDS253001R0338
Each
MYR1,756.66
Better World
Schneider Electric Multi 9 MCB, 1P, 10A Curve D, 10 kA Breaking Capacity
  • RS Stock No. 219-9143
  • Mfr. Part No. M9F23110
Each
MYR165.61
Eaton 8A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 181-8589
  • Mfr. Part No. C10M8
Each (In a Box of 10)
MYR6.688
Eaton 6.3A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 169-9382
  • Mfr. Part No. HTC-30M
1 Bag of 1000
MYR5,342.86
Eaton BB-EV 2 Phase Busbar, 690V, 17.8mm Pitch
  • RS Stock No. 241-342
  • Mfr. Part No. 168865 BB-EVP-16/2P-1MU
Each
MYR261.34
Eaton 50A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8645
  • Mfr. Part No. 50NHG000B
Each
MYR44.59
Mersen 250mA FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 188-6710
  • Mfr. Part No. H084302
Each (In a Pack of 10)
MYR21.826
Siemens SENTRON 3 Phase Busbar, 18mm Pitch
  • RS Stock No. 202-7199
  • Mfr. Part No. 5ST3712
Each
MYR826.18
Better World
Schneider Electric Tesys Mechanical Latch Block for use with LC1D09 → LC1D38, LC1D40A → LC1D65A, LC1DT20
  • RS Stock No. 822-8001
  • Mfr. Part No. LAD6K10E
Each
MYR530.71
Siemens 63A NH Fuse, NH000, 500V ac
  • RS Stock No. 395-840
  • Mfr. Part No. 3NA6822
Each (In a Pack of 3)
MYR48.057
Limitor Thermal Fuse +70°C 2.5 A, 250V ac
  • RS Stock No. 176-9132
  • Mfr. Part No. P82 70 05100
Each
MYR29.32
Better World
Schneider Electric 125A Rail Mount Fuse Holder for 22 x 58mm Fuse, 3P, 690V ac
  • RS Stock No. 482-629
  • Mfr. Part No. DF223C
Each
MYR528.16
RS PRO 9A Resettable Fuse, 30V dc
  • RS Stock No. 279-6757
Each (In a Pack of 10)
MYR4.34
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