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

33 of 999+
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3282
  • Mfr. Part No. A9DK1620
Each
SGD286.14(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 2P, 16A Curve D, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7863
  • Mfr. Part No. 2CDS252001R0161 S202-D16
Each
SGD87.89(exc. GST)
Schurter 5A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 269-3875
  • Mfr. Part No. 8020.5075
Each
SGD1.31(exc. GST)
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 100A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3073
  • Mfr. Part No. A9N18367
Each
SGD492.25(exc. GST)
Mersen 1A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-7016
  • Mfr. Part No. F217171
Each (In a Pack of 10)
SGD4.615(exc. GST)
RS PRO 6A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-082
1 Pack of 10
SGD346.24(exc. GST)
Littelfuse 3A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0102
  • Mfr. Part No. 0312003.HXP
Each (In a Pack of 10)
SGD1.713(exc. GST)
ABB System Pro M Compact S200P MCB, 1P, 2A Curve K
  • RS Stock No. 231-9786
  • Mfr. Part No. 2CDS281001R0277 S20K 2A - 25 KA
Each
SGD45.00(exc. GST)
ABB F200 RCCB, 125A, 4 Pole, 300mA, Type AC, 230V ac
  • RS Stock No. 225-6122
  • Mfr. Part No. 2CSF204001R3950 F204 AC-125/0,3
Each
SGD2,073.32(exc. GST)
Littelfuse 10A Red Blade Car Fuse, 32V dc
  • RS Stock No. 787-4101
  • Mfr. Part No. 0287010.PXCN
Each (In a Pack of 10)
SGD0.571(exc. GST)
Better World
ABB, Tmax XT MCCB 4P 125A, Fixed Mount
  • RS Stock No. 236-6646
  • Mfr. Part No. 1SDA068225R1 XT3S 250 TMD 125A 3P+N FF
Each
SGD1,314.78(exc. GST)
ABB S803S MCB, 3P, 80A, UC-B, 750V DC, 50 kA Breaking Capacity
  • RS Stock No. 140-768
  • Mfr. Part No. 2CCS863001R1805
Each
SGD796.49(exc. GST)
Better World
Siemens Sentron 5SY6 MCB, 2P, 16A Curve C, 400V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 196-3631
  • Mfr. Part No. 5SY6216-7
Each
SGD85.85(exc. GST)
Better World
ABB System Pro M Compact S200M MCB, 2P, 20A Curve B, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-065
  • Mfr. Part No. 2CDS272001R0205 S202M-B20
Each
SGD106.12(exc. GST)
Siemens 40A Tag Fuse, NH1, 400V ac
  • RS Stock No. 143-909
  • Mfr. Part No. 3NA6117-4
1 Pack of 3
SGD62.31(exc. GST)
Better World
Siemens Sentron 5SY4 MCB, 4P, 20A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 124-3148
  • Mfr. Part No. 5SY4420-7
Each
SGD298.86(exc. GST)
ABB MCCB 3P 250A, Breaking Capacity 65 kA
  • RS Stock No. 192-0834
  • Mfr. Part No. 1SDA068126R1
Each
SGD1,510.97(exc. GST)
Phoenix Contact Thermal Circuit Breaker - TCP 3A Single Pole 65 V dc, 250V ac Voltage Rating, 3A Current Rating
  • RS Stock No. 801-6905
  • Mfr. Part No. 0712233
Each
SGD34.86(exc. GST)
Better World
Schneider Electric, ComPacT New Generation Circuit breaker 3P 250A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 254-6357
  • Mfr. Part No. C25F3TM250
Each
SGD2,717.57(exc. GST)
SIB Copper Earth Bar L. 78mm x W. 35mm x H. 46mm 5 Ways
  • RS Stock No. 270-5239
  • Mfr. Part No. P04350
1 Box of 10
SGD80.89(exc. GST)
1
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