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

46578 Products showing for Fuses & Circuit Breakers

154 / 999+
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
Schneider Electric, PowerPact Circuit breaker 4P 30A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-942
  • Mfr. Part No. BGL46030LU
Each
MYR6,973.34
Legrand 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6118
  • Mfr. Part No. 0 133 10
Each (In a Box of 10)
MYR14.801
Mersen 80A FF Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 136-0504
  • Mfr. Part No. E1018559 / FR22GR69V80
Each (In a Box of 10)
MYR165.91
ABB High Performance S800S MCB, 2P, 100A Curve B, 400V AC, 250V DC, 50 kA Breaking Capacity
  • RS Stock No. 435-598
  • Mfr. Part No. 2CCG001218R0001
Each
MYR1,282.03
Eaton 1 Phase Distribution Board, 13 Way, 125 A
  • RS Stock No. 124-2998
  • Mfr. Part No. EAM13 EAM13
Each
MYR1,196.23
Eaton xEffect MCB, 2P, 6A Curve B, 240 → 415V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 847-3181
  • Mfr. Part No. 278728 FAZ-B6/2
Each
MYR404.88
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3975
  • Mfr. Part No. 1SDA072027R1
Each
MYR349,774.37
ABB EIB Busbar
  • RS Stock No. 715-8923
  • Mfr. Part No. GHQ6301901R0001 BUSKLEMME
Each
MYR10.02
Littelfuse PC Board Non Resettable Fuse, Axial 500mA, 125V ac/dc
  • RS Stock No. 541-3259
  • Mfr. Part No. 0251.500NRT1L
Each (In a Pack of 10)
MYR5.829
SIBA 500mA FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 736-1416
  • Mfr. Part No. 70-172-40/0.5A
Each
MYR28.58
Eaton Bussmann Series 500mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7109
  • Mfr. Part No. BK-MDL-1-2-R
Each
MYR5.26
Murrelektronik Limited Electronic Circuit Breaker
  • RS Stock No. 123-6693
  • Mfr. Part No. 9000-41042-0100600
Each
MYR592.67
ABB S800U MCB, 2P, 80A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-112
  • Mfr. Part No. 2CCS862017R0805
Each
MYR1,714.40
RS PRO Thermal Circuit Breaker -, 16A Current Rating
  • RS Stock No. 774-0039
Each
MYR47.68
Eaton xEffect MCB, 3P, 10A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 624-0456
  • Mfr. Part No. 278869 FAZ-C10/3
Each
MYR607.43
Better World
Schneider Electric Multi 9 C60BP MCB, 3P, 6A Curve C, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2427
  • Mfr. Part No. M9F42306
Each
MYR1,358.92
ABB 4 Phase Industrial Surge Protector, 100kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 237-6638
  • Mfr. Part No. 2CTB802346R2900
Each
MYR3,580.50
Schneider Electric, ComPacT NSX MCCB 3P 100A, Fixed Mount
  • RS Stock No. 254-6292
  • Mfr. Part No. C10H3
Each
MYR2,278.43
WAGO Electronic Circuit Breaker 10A 24V 787, 4 channels , DIN Rail
  • RS Stock No. 303-297
  • Mfr. Part No. 787-3664
Each
MYR1,003.74
1
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