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

107 / 999+
Hager RCBO, 20A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type A
  • RS Stock No. 602-206
  • Mfr. Part No. ADM470C
Each
MYR2,630.24
Eaton 15A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-379
  • Mfr. Part No. LP-CC-15
1 Pack of 10
MYR2,753.17
Legrand HX 1 Phase Busbar, 400V, 17.7mm Pitch
  • RS Stock No. 731-9433
  • Mfr. Part No. 4 049 26
Each
MYR47.08
Allen Bradley 140G Cover Frame for use with MCCBs
  • RS Stock No. 255-1632
  • Mfr. Part No. 140G-G2C3-C50
Each
MYR1,197.37
Littelfuse PC Board Non Resettable Fuse, Axial 1.5A, 125V ac/dc
  • RS Stock No. 541-3271
  • Mfr. Part No. 025101.5HAT1L
Each (In a Pack of 10)
MYR4.958
Siemens Sentron Cover for use with MCB
  • RS Stock No. 216-3346
  • Mfr. Part No. 5ST3800
Each (In a Pack of 10)
MYR11.861
SIBA 15A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 768-6128
  • Mfr. Part No. 5021526.15
Each
MYR90.36
Lovato ModuLo P1MB MCB, 1P, 10A Curve C, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 825-5598
  • Mfr. Part No. P1MB1PC10
Each
MYR95.35
Better World
ABB, XT3N MCCB 4P 250A, Fixed Mount
  • RS Stock No. 236-6581
  • Mfr. Part No. 1SDA068066R1 XT3N 250 TMD 250A 3P+N FF
Each
MYR6,019.21
Eaton xEffect MCB, 1P, 10A Curve C, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 624-0333
  • Mfr. Part No. 278557 FAZ-C10/1
Each
MYR101.42
RS PRO 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 611-0024
Each (In a Pack of 10)
MYR2.418
Siemens 100A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 203-2011
  • Mfr. Part No. 3NA7830
Each (In a Pack of 3)
MYR39.28
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
Better World
Schneider Electric, ComPacT NSX MCCB 3P 125A, Fixed Mount
  • RS Stock No. 254-6344
  • Mfr. Part No. C16F3TM125
Each
MYR4,572.31
ABB F200 RCCB, 40A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 537-7361
  • Mfr. Part No. 2CSF202001R1400 F202 AC-40/0,03
Each
MYR453.02
Better World
Schneider Electric Spreader for use with Compact Nsx 400/630, Easypact Cvs 400/630
  • RS Stock No. 221-1233
  • Mfr. Part No. LV432490
Each
MYR538.62
Eaton 250mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1638
  • Mfr. Part No. S506-250-R
Each (In a Pack of 10)
MYR2.587
Better World
Siemens Sentron 5SY6 MCB, 2P, 1A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 196-3624
  • Mfr. Part No. 5SY6201-7
Each
MYR354.79
Eaton MEMShield MCB, 3P, 20A Curve C, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 124-3046
  • Mfr. Part No. EMCH320 EMCH320
Each
MYR651.73
Better World
Schneider Electric 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 3P+N, 690V ac
  • RS Stock No. 482-843
  • Mfr. Part No. DF103N
Each
MYR280.36
1
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