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

46579 Products showing for Fuses & Circuit Breakers

93 / 999+
Eaton RCCB, 63A, 2 Pole, 100mA, Type AC, 230V ac
  • RS Stock No. 227-0739
  • Mfr. Part No. 264287 PFGM-63/2/01
Each
MYR1,892.41
Bourns 20A F Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 254-4183
  • Mfr. Part No. PF-HT1-20
Each
MYR171.73
Eaton RCCB, 10A, 2 Pole, 10mA, Type AC, 230V ac
  • RS Stock No. 227-0688
  • Mfr. Part No. 264265 PFGM-16/2/001
Each
MYR887.53
Europa 3 Phase Distribution Board, 36 Way, 125 A
  • RS Stock No. 849-6421
  • Mfr. Part No. TPN12
Each
MYR2,356.61
ABB System Pro M Compact SU200M MCB, 3P, 16A Curve C, 400V AC, 400V DC, 15 kA Breaking Capacity
  • RS Stock No. 231-9758
  • Mfr. Part No. 2CDS273337R0164 SU203M-C16
1 Box of 1
MYR873.13
Better World
Schneider Electric, ComPacT New Generation Circuit breaker 3P 250A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 254-6357
  • Mfr. Part No. C25F3TM250
Each
MYR9,467.07
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 3A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8596
  • Mfr. Part No. EZ9F16103
Each
MYR22.86
RS PRO 35A Bolted Tag Fuse, 350 V dc, 690V ac, 63.5mm
  • RS Stock No. 221-3657
Each
MYR88.99
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX630
  • RS Stock No. 212-061
  • Mfr. Part No. C6347A570
Each
MYR23,652.94
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 32A Curve K, 15 kA Breaking Capacity
  • RS Stock No. 219-9303
  • Mfr. Part No. A9F95232
Each
MYR1,201.79
ABB System Pro M Compact S200M MCB, 3P, 32A Curve C, 440V AC, 12V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-4318
  • Mfr. Part No. 2CDS273001R0324 S203M-C32
Each
MYR294.34
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 1+N, 16A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 191-6089
  • Mfr. Part No. A9P22616
Each
MYR234.04
Schneider Electric A9R1 RCCB, 100A, 4 Pole, 300mA, Type AC, 415V ac
  • RS Stock No. 276-9127
  • Mfr. Part No. A9R14491
Each
MYR3,337.49
Mersen 63A NH Fuse, NH000, 500V ac
  • RS Stock No. 270-3102
  • Mfr. Part No. R212466
Each (In a Box of 3)
MYR48.613
Phoenix Contact CLIPLINE Thermal Circuit Breaker - UT 6-TMC Single Pole 250V Voltage Rating DIN Rail Mount, 12A
  • RS Stock No. 684-3617
  • Mfr. Part No. 0916611
Each
MYR111.23
Mersen 3A F GMG Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4398
  • Mfr. Part No. ATMR3
Each
MYR115.36
Socomec 50A Rail Mount Fuse Holder for 14 x 51mm Fuse, 1P, 690V
  • RS Stock No. 233-3331
  • Mfr. Part No. 57025011
Each (In a Pack of 6)
MYR166.913
Legrand 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 266-3104
  • Mfr. Part No. 013410
1 Box of 10
MYR285.04
Better World
Schneider Electric Acti 9 C120N MCB, 2P, 100A Curve C, 440V AC, 250V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3058
  • Mfr. Part No. A9N18362
Each
MYR434.82
Better World
ABB System Pro M Compact S200 MCB, 2P, 32A Curve C, 400V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7722
  • Mfr. Part No. 2CDS252001R0324 S202-C32
Each
MYR164.88
1
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