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
Fuses - PCB
Fuses - PCB

46578 Products showing for Fuses & Circuit Breakers

190 / 999+
ABB System Pro M Compact S200 M UC MCB, 3P, 15A, Type Z, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 201-047
  • Mfr. Part No. 2CDS273061R0458
Each
MYR2,897.86
ABB S804C MCB, 4P, 63A Curve K, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-652
  • Mfr. Part No. 2CCS884001R0597
Each
MYR1,762.77
WAGO Electronic Circuit Breaker 10A 24V 787, 2 channels , DIN Rail
  • RS Stock No. 279-4093
  • Mfr. Part No. 787-1662/000-054
Each
MYR1,120.63
ABB S804C MCB, 4P, 16A Curve K, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-494
  • Mfr. Part No. 2CCS884001R0467
Each
MYR1,423.16
ABB System Pro M Compact S300P MCB, 1P, 3A, Type Z, 240V AC, 72V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-273
  • Mfr. Part No. 2CDS381001R0318
Each
MYR863.86
Eaton 25A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4380
  • Mfr. Part No. LP-CC-25
Each
MYR233.44
Better World
Siemens, SENTRON MCCB 1P 160A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9751
  • Mfr. Part No. 3VA1116-3ED12-0AA0
Each
MYR1,879.92
ETI 16A D01 Neozed Fuse, E14 Thread Size, gG, 400V ac
  • RS Stock No. 415-979
  • Mfr. Part No. 2211005
Each (In a Pack of 5)
MYR5.88
nVent ERICO Earth Bar
  • RS Stock No. 277-6234
  • Mfr. Part No. EEB04C506D0A
Each
MYR942.54
Mersen 500mA FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 188-6726
  • Mfr. Part No. J084303
Each (In a Pack of 10)
MYR22.31
Siemens Labelling Plate for use with PT Relais
  • RS Stock No. 266-9622
  • Mfr. Part No. LZS:PT17040
Each (In a Pack of 10)
MYR3.362
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 80A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9734
  • Mfr. Part No. LV510336
Each
MYR2,223.60
SIBA 100A NH Fuse, NH00, 690V
  • RS Stock No. 893-8565
  • Mfr. Part No. 20-209-08/100A
Each (In a Pack of 3)
MYR117.87
Eaton RCD, 40A, 2 Pole, 300mA, Type S
  • RS Stock No. 922-8686
  • Mfr. Part No. 235461 PFIM-40/2/03-S-MW
Each
MYR1,044.37
Wickmann 0.1A Resettable Fuse, 60V dc
  • RS Stock No. 174-0383
  • Mfr. Part No. 60R010XU
Each (In a Box of 500)
MYR1.673
ABB Electronic Time Delay for use with T1, T2, T3, T4, T5, T6, XT1, XT2, XT3, XT4
  • RS Stock No. 250-4527
  • Mfr. Part No. 1SDA051361R1
Each
MYR2,215.63
ABB S202L MCB, 2P, 40A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 201-388
  • Mfr. Part No. 2CDS242701R0404
Each
MYR700.31
RS PRO 100A Solid Link for A4 Fuses
  • RS Stock No. 242-1077
Each
MYR57.37
Siemens 1.25kA Fuse Holder for 153mm Fuse, 1P, 1.25kV
  • RS Stock No. 608-664
  • Mfr. Part No. 3NH5463
1 Pack of 3
MYR606.57
Littelfuse 30A Inline Fuse Holder for ATO Fuse, 32V dc
  • RS Stock No. 419-195
  • Mfr. Part No. 0FHA0002ZXJ
Each (In a Pack of 5)
MYR29.562
1
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