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

63 of 999+
Temporarily out of stock
Eaton Fuse Holder Adapter
  • RS Stock No. 260-718
  • Mfr. Part No. BC3
1 Pack of 2
SGD9.59(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 150A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-019
  • Mfr. Part No. 3VA6115-8HL41-0AA0
Each
SGD3,751.89(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 2P, 6A, Type Z, 15 kA Breaking Capacity
  • RS Stock No. 219-9241
  • Mfr. Part No. A9F92206
Each
SGD312.53(exc. GST)
In Stock
Better World
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3281
  • Mfr. Part No. A9DK1616
Each
SGD337.75(exc. GST)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-6798
  • Mfr. Part No. 1SDA068539R1 XT4H 160 Ekip I 160A FF
Each
SGD1,780.74(exc. GST)
In Stock
WJ Furse Copper Earth Bar L. 650mm x W. 90mm x H. 90mm 10 Ways
  • RS Stock No. 124-2498
  • Mfr. Part No. 7TCA083670R0685 LK245-10
Each
SGD469.08(exc. GST)
In Stock
Eaton 25A Ceramic Cartridge Fuse, 13 x 29mm
  • RS Stock No. 181-8450
  • Mfr. Part No. SMD25
1 Box of 20
SGD144.61(exc. GST)
In Stock
Eaton 15A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 849-5608
  • Mfr. Part No. HKP-HH-R
Each (In a Pack of 10)
SGD15.404(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 400A, Fixed Mount
  • RS Stock No. 260-8128
  • Mfr. Part No. C40N4
Each
SGD3,192.79(exc. GST)
In Stock
Eaton xEffect MCB, 3P, 50A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3406
  • Mfr. Part No. 278878 FAZ-C50/3
Each
SGD210.81(exc. GST)
In Stock
Siemens 25A DII Bottle Fuse, E27 Thread Size, gR, 500V ac/dc
  • RS Stock No. 847-0983
  • Mfr. Part No. 5SD440
Each
SGD16.13(exc. GST)
In Stock
Siemens 25A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 396-281
  • Mfr. Part No. 3NE1815-0
Each (In a Pack of 3)
SGD143.88(exc. GST)
Temporarily out of stock
Eaton 6A Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 229-128
  • Mfr. Part No. FNQ-6
1 Pack of 10
SGD766.72(exc. GST)
In Stock
Better World
Schneider Electric 125A Cartridge Fuse, 22 x 58mm
  • RS Stock No. 219-9071
  • Mfr. Part No. DF2FA125
Each (In a Pack of 10)
SGD47.56(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 80A Curve D, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3082
  • Mfr. Part No. A9N18387
Each
SGD605.63(exc. GST)
In Stock
Eaton 2A Bolted Tag Fuse, A2, 550V ac, 73mm
  • RS Stock No. 181-8864
  • Mfr. Part No. AAO2
Each
SGD5.77(exc. GST)
Temporarily out of stock
Siemens 63A Bottle Fuse Holder, 3P, 400V ac
  • RS Stock No. 202-7231
  • Mfr. Part No. 5SG5702
Each (In a Pack of 5)
SGD62.334(exc. GST)
In Stock
Better World
Schneider Electric, ComPact MCCB, Fixed Mount
  • RS Stock No. 221-0947
  • Mfr. Part No. LV429408
Each
SGD324.02(exc. GST)
Limited stock
Better World
Siemens Sentron 5SY6 MCB, 1P, 10A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 489-6704
  • Mfr. Part No. 5SY6110-6
Each
SGD29.69(exc. GST)
In Stock
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 32A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8619
  • Mfr. Part No. EZ9F16132
Each
SGD6.79(exc. GST)
1
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