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

144 / 999+
ABB System Pro M Compact S200 MCB, 2P, 13A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-6909
  • Mfr. Part No. 2CDS252001R0135 - S202B13
Each
MYR267.23
Better World
ABB, XT2N MCCB 4P 40A, Fixed Mount
  • RS Stock No. 236-7463
  • Mfr. Part No. 1SDA067731R1 XT2N 160 TMG 40A FF
Each
MYR2,437.49
Better World
Schneider Electric, ComPacT New Generation Circuit breaker 3P 63A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 254-6298
  • Mfr. Part No. C10N3TM063
Each
MYR3,686.99
Eaton 250A Rail Mount Fuse Holder for NH1 Fuse, 1P, 690V ac
  • RS Stock No. 765-2951
  • Mfr. Part No. SD1-D
Each
MYR166.17
Eaton 50A British Standard Fuse, FE, 690 V ac, 500V dc, 63.5mm
  • RS Stock No. 156-8967
  • Mfr. Part No. 50FE
Each
MYR296.10
Schurter 751 Bronze PCB Mount Fuse Clip for 5 x 20mm
  • RS Stock No. 876-7830
  • Mfr. Part No. 0751.0052
Each (In a Pack of 100)
MYR0.867
Better World
Schneider Electric Acti9 iIDK RCCB, 25A, 2 Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 238-3454
  • Mfr. Part No. A9R55225
Each
MYR687.39
Phoenix Contact Three Phase Surge Arrester, 40kA, = 1.5kV, DIN Rail Mount
  • RS Stock No. 249-9523
  • Mfr. Part No. 2920243
Each
MYR1,891.81
Eaton 7.5A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 262-459
  • Mfr. Part No. LP-CC-7-1/2
1 Pack of 10
MYR2,935.33
Better World
Schneider Electric Acti 9 iC60N MCB, 4P, 6A Curve C, 440V AC, 250V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3521
  • Mfr. Part No. A9F77406
Each
MYR1,375.18
ABB Surge Protector, 1.8kV, DIN Rail Mount
  • RS Stock No. 289-1630
  • Mfr. Part No. 2CTB803871R1200
Each
MYR433.33
ABB System Pro M Compact S200M MCB, 3P, 63A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-4352
  • Mfr. Part No. 2CDS273001R0634 S203M-C63
Each
MYR574.19
Eaton 25A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8437
  • Mfr. Part No. C14G25
Each (In a Pack of 10)
MYR9.722
Better World
Schneider Electric 12A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 219-9047
  • Mfr. Part No. DF2CA12
Each (In a Pack of 10)
MYR51.026
Better World
Schneider Electric Acti 9 iDPN MCB, 1A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 776-2682
  • Mfr. Part No. A9N21552
Each
MYR295.97
Siemens 50A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 396-291
  • Mfr. Part No. 3NE1817-0
Each (In a Pack of 3)
MYR499.273
ABB System Pro M Compact S200M MCB, 1P, 16A, Type Z, 230/400V AC, 72V DC, 15 kA Breaking Capacity
  • RS Stock No. 204-305
  • Mfr. Part No. 2CDS271001R0468
Each
MYR571.18
RS PRO 4A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6041
Each (In a Pack of 10)
MYR1.826
Better World
ABB System Pro M Compact S200 MCB, 1P, 2A Curve K, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 514-0096
  • Mfr. Part No. 2CDS251001R0277 S201-K2
Each
MYR216.66
ABB F200 RCCB, 63A, 4 Pole, 30mA, Type AC
  • RS Stock No. 537-7434
  • Mfr. Part No. 2CSF204001R1630 F204 AC-63/0,03
Each
MYR1,345.35
1
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