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

49110 Products showing for Fuses & Circuit Breakers

64 of 999+
In Stock
Better World
RS PRO 12A F Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 239-4974
Each (In a Pack of 10)
SGD9.458(exc. GST)
In Stock
RS PRO 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-067
1 Pack of 10
SGD346.24(exc. GST)
In Stock
Better World
Schneider Electric 250V (Volts) Push Button
  • RS Stock No. 219-8269
  • Mfr. Part No. A9E18032
Each
SGD46.89(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , DIN Rail
  • RS Stock No. 127-484
  • Mfr. Part No. 183345 IZMX16B3-V16W-1
Each
SGD13,757.42(exc. GST)
Temporarily out of stock
Phoenix Contact 2A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 254-4864
  • Mfr. Part No. 3061295
Each (In a Pack of 10)
SGD20.528(exc. GST)
Temporarily out of stock
Littelfuse 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 878-1353
  • Mfr. Part No. 03455LS8H
Each
SGD7.69(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 4P, 3A, Type Z
  • RS Stock No. 237-3322
  • Mfr. Part No. 2CDS254001R0318 S204 Z 3A - 10 KA
Each
SGD375.57(exc. GST)
In Stock
Bulgin 10A Inline Fuse Holder for 6.3 x 32mm Fuse, 50V ac
  • RS Stock No. 893-7073
  • Mfr. Part No. FX0180/BK
Each (In a Pack of 5)
SGD10.336(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 1A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3275
  • Mfr. Part No. A9F54101
Each
SGD78.14(exc. GST)
In Stock
Better World
Schneider Electric RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Resi9 Range
  • RS Stock No. 247-2231
  • Mfr. Part No. R9D01616
Each
SGD74.87(exc. GST)
In Stock
RS PRO 200mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 611-0204
Each (In a Pack of 10)
SGD2.788(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 4P, 25A Curve B, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2351
  • Mfr. Part No. M9F21425
Each
SGD319.59(exc. GST)
In Stock
Better World
Schneider Electric Busbar Tap-Off Unit with Fuse Isolator
  • RS Stock No. 219-8902
  • Mfr. Part No. KNB50SN4
Each
SGD520.16(exc. GST)
Temporarily out of stock
Lawson Fuses 63A Rail Mount Fuse Holder for A3 Fuse, 690V ac
  • RS Stock No. 216-5468
  • Mfr. Part No. LBI63FC/FCBK
Each
SGD69.37(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 C120H MCB, 4P, 80A Curve D, 440V AC, 500V DC, 15 kA, 30 kA Breaking Capacity
  • RS Stock No. 776-3048
  • Mfr. Part No. A9N18523
Each
SGD972.92(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON 3VA1 MCB, 2P, 50A
  • RS Stock No. 224-7861
  • Mfr. Part No. 3VA1150-3ED26-0AA0
Each
SGD408.20(exc. GST)
In Stock
ABB RCBO, 40A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6943
  • Mfr. Part No. 2CSR255080R1405 DS201 B40 AC30
Each
SGD139.64(exc. GST)
In Stock
RS PRO 20A Yellow Blade Car Fuse, 32V dc
  • RS Stock No. 563-762
Each (In a Pack of 10)
SGD0.717(exc. GST)
In Stock
Legrand 20A F Ceramic Cartridge Fuse, 8.5 x 32mm
  • RS Stock No. 293-8222
  • Mfr. Part No. 0 123 20
Each (In a Pack of 10)
SGD2.511(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 4P, 32A Curve B, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 746-8090
  • Mfr. Part No. 2CDS274001R0325 S204M-B32
Each
SGD191.22(exc. GST)
1
64
2456
Results per page

Related links