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

214 / 999+
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 2A, 125V ac
  • RS Stock No. 787-4338P
  • Mfr. Part No. 0473002.MRT1L
Each (Supplied on a Reel)
MYR6.99
In Stock
Socomec 20A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 122-5273
  • Mfr. Part No. 60220020
Each (In a Pack of 10)
MYR10.087
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 250A, Fixed Mount
  • RS Stock No. 254-6359
  • Mfr. Part No. C25H3TM250
Each
MYR11,289.80
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1+N, 2A Curve B
  • RS Stock No. 237-3193
  • Mfr. Part No. 2CDS251103R0025
Each
MYR299.94
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 50A, Breaking Capacity 55 kA
  • RS Stock No. 209-6834
  • Mfr. Part No. 3VA1150-5GF46-0AA0
Each
MYR2,857.13
In Stock
RS PRO 630mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9636
Each (In a Pack of 10)
MYR1.955
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 2P, 500mA, Type Z, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-352
  • Mfr. Part No. 2CDS272061R0158
Each
MYR2,034.90
In Stock
Siemens Fuse Holder Diazed Holder Chuck
  • RS Stock No. 202-7170
  • Mfr. Part No. 5SH302
Each (In a Pack of 10)
MYR12.812
In Stock
Littelfuse SMD Non Resettable Fuse 5A, 125V ac/dc
  • RS Stock No. 219-6260
  • Mfr. Part No. 0154005.DRT
Each (In a Pack of 10)
MYR15.872
In Stock
Siemens SIRIUS 3 Phase Busbar, 690V, 45mm Pitch
  • RS Stock No. 246-5140
  • Mfr. Part No. 3RV1915-1CB
Each
MYR114.98
In Stock
ABB Tmax T Motor Operator for use with MCCB
  • RS Stock No. 232-0141
  • Mfr. Part No. 1SDA060398R1 MOE 220-250VACDC T6
Each
MYR5,586.62
In Stock
ABB RCBO, 16A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5098
  • Mfr. Part No. 2CSR254001R1164
Each
MYR1,535.03
Temporarily out of stock
ABB SU200 M MCB, 2P, 500mA Curve C, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 203-878
  • Mfr. Part No. 2CDS272337R0984
Each
MYR1,351.62
Temporarily out of stock
Eaton 20A F Melamine Cartridge Fuse, 14 x 38mm
  • RS Stock No. 848-4096
  • Mfr. Part No. JJS-20
Each
MYR296.40
In Stock
HENSEL ENYBOARD Distribution Board, 41 A
  • RS Stock No. 117-118
  • Mfr. Part No. RK 1019 T
Each
MYR448.39
In Stock
ETA Thermal Circuit Breaker - 1410-F Single Pole 240V Voltage Rating Panel Mount, 5A Current Rating
  • RS Stock No. 409-839
  • Mfr. Part No. 1410-F110-P1F1-W14QB4-5A
Each
MYR130.94
In Stock
Littelfuse 70A Tan Blade Car Fuse, 32V dc
  • RS Stock No. 219-3609
  • Mfr. Part No. 0299070.TXN
Each (In a Pack of 10)
MYR11.21
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 25A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-7778
  • Mfr. Part No. 2CDS253001R0254 S203-C25
Each
MYR382.81
In Stock
RS PRO Single Phase Industrial Surge Protector, 50kA, 1.35kV, DIN Rail Mount
  • RS Stock No. 101-794
Each
MYR1,061.89
In Stock
Eaton 6A British Standard Fuse, 240V, 35mm
  • RS Stock No. 181-8801
  • Mfr. Part No. STD6
Each
MYR18.05
1
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