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

11 of 999+
In Stock
Eaton 10A Bolted Tag Fuse, 1.2 kV ac, 660V dc, 124mm
  • RS Stock No. 181-8433
  • Mfr. Part No. TAC10
Each (In a Box of 10)
SGD71.749(exc. GST)
In Stock
Mersen 20A DII Diazed Fuse, E27 Thread Size, gG, 500V
  • RS Stock No. 377-0487
  • Mfr. Part No. A211508
Each (In a Pack of 5)
SGD3.288(exc. GST)
In Stock
Eaton 500mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1240
  • Mfr. Part No. S500-500-R
Each (In a Pack of 10)
SGD0.622(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3+N, 6A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 253-972
  • Mfr. Part No. 241184 FAZT-D6/3N
Each
SGD423.45(exc. GST)
In Stock
ABB Emax 2, Tmax XT Terminal for use with Circuit Breaker
  • RS Stock No. 231-9311
  • Mfr. Part No. 1SDA073906R1 E6.2-XT7/M 10pz
Each
SGD101.35(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 16A Curve C, 440V AC, 180V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3284
  • Mfr. Part No. A9F87316
Each
SGD401.92(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 6A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3332
  • Mfr. Part No. A9F54206
Each
SGD244.80(exc. GST)
In Stock
Littelfuse 1A M Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 769-0023
  • Mfr. Part No. 0234001.MXP
Each (In a Pack of 25)
SGD1.38(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 16 Way, 250 A
  • RS Stock No. 336-635
  • Mfr. Part No. SEA9BPN16
Each
SGD2,297.73(exc. GST)
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 4P 125A, Fixed Mount
  • RS Stock No. 232-0231
  • Mfr. Part No. 1SDA066888R1 XT1B 160 TMD 125A FF
Each
SGD741.08(exc. GST)
Being discontinued
RS PRO 13A T Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 174-7960
Each (In a Box of 500)
SGD0.273(exc. GST)
In Stock
ABB System Pro M Compact S200M MCB, 1P, 50A Curve C, 253V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-4201
  • Mfr. Part No. 2CDS271001R0504 S201M-C50
Each
SGD40.45(exc. GST)
In Stock
RS PRO Residential RCCBs, 63A, 2 Pole, 30mA, Type A, 230V
  • RS Stock No. 284-2371
Each
SGD63.44(exc. GST)
Temporarily out of stock
Eaton 250mA Slow-Blow Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 229-195
  • Mfr. Part No. C14M0.25
1 Pack of 10
SGD46.22(exc. GST)
In Stock
Eaton 16A British Standard Fuse, CT, 690 V, 700 V, 64.3mm
  • RS Stock No. 156-8901
  • Mfr. Part No. 16CT
Each (In a Pack of 5)
SGD14.32(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-404
  • Mfr. Part No. 3VA5210-7EC31-2AA0
Each
SGD1,481.35(exc. GST)
In Stock
Mersen 10A T Fibreglass Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4364
  • Mfr. Part No. ATQR10
Each
SGD30.97(exc. GST)
In Stock
Eaton 20A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8434
  • Mfr. Part No. C14G20
Each (In a Pack of 10)
SGD1.555(exc. GST)
Limited stock
Legrand DX Range DX3 MCB, 1P, 16A Curve C, 250V AC, 12V DC, 4.5 kA Breaking Capacity
  • RS Stock No. 823-4683
  • Mfr. Part No. 4 068 83
Each
SGD46.61(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 25A Curve K, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-8002
  • Mfr. Part No. 2CDS252001R0517 S202-K25
Each
SGD136.22(exc. GST)
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