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

71 of 999+
In Stock
Schurter PC Board Non Resettable Fuse, Radial 2A, 250V ac
  • RS Stock No. 284-5366
  • Mfr. Part No. 0034.6618
Each (In a Pack of 10)
SGD0.924(exc. GST)
In Stock
Schneider Electric A9R1 RCCB, 100A, 4 Pole, 300mA, Type AC, 415V ac
  • RS Stock No. 276-9127
  • Mfr. Part No. A9R14491
Each
SGD958.04(exc. GST)
In Stock
RS PRO 630mA T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-409
Each (In a Pack of 10)
SGD1.678(exc. GST)
In Stock
ABB DDA 200 A RCD, 25A, 1+N Pole, 30mA, Type A
  • RS Stock No. 610-3773
  • Mfr. Part No. 2CSB202101R1250 - DDA202A-25/0.03
Each
SGD162.20(exc. GST)
In Stock
Schneider Electric 32A Rail Mount Fuse Holder
  • RS Stock No. 230-1210
  • Mfr. Part No. 15624
Each
SGD28.18(exc. GST)
In Stock
RS PRO MCB, 2P, 4A Curve C, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0176
Each
SGD31.62(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 4A Curve C, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 240-588
  • Mfr. Part No. 102242 FAZ-C4/3-NA
Each
SGD357.00(exc. GST)
In Stock
Eaton xEffect MCB, 2P, 40A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3370
  • Mfr. Part No. 102176 FAZ-C40/2-NA
Each
SGD178.70(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 30A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-983
  • Mfr. Part No. 102313 FAZ-D30/3-RT
Each
SGD385.81(exc. GST)
In Stock
ABB System Pro M Compact S200M MCB, 1P, 10A Curve C, 253V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-4144
  • Mfr. Part No. 2CDS271001R0104 S201M-C10
Each
SGD24.47(exc. GST)
In Stock
Siemens 230V ac Undervoltage Release Circuit Trip for use with 3RV2 Series Circuit Breakers
  • RS Stock No. 706-1939
  • Mfr. Part No. 3RV2902-1AP0
Each
SGD81.19(exc. GST)
Temporarily out of stock
Better World
Schneider Electric iID RCD, 63A, 100mA
  • RS Stock No. 776-3694
  • Mfr. Part No. A9R12263
Each
SGD360.38(exc. GST)
Temporarily out of stock
Siemens 230V ac Remote Switch Circuit Trip
  • RS Stock No. 223-7643
  • Mfr. Part No. 5TT4452-0
Each
SGD166.65(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 4P, 40A Curve C, 100 → 130V AC, 12 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 734-9327
  • Mfr. Part No. A9F94440
Each
SGD294.06(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 100A Curve C, 440V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 231-9677
  • Mfr. Part No. 2CDS252001R0824 S202-C100 6kA
1 Box of 1
SGD157.78(exc. GST)
In Stock
Rockwell Automation FB100 Busbar, 1000V
  • RS Stock No. 281-5990
  • Mfr. Part No. FB100608Q1
Each (In a Pack of 2)
SGD180.94(exc. GST)
In Stock
Siemens 900A German Standard Fuse, NH2, 690V
  • RS Stock No. 210-6976
  • Mfr. Part No. 3NE3340-8
Each (In a Pack of 3)
SGD549.50(exc. GST)
In Stock
Eaton xEffect MCB, 2P, 16A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3282
  • Mfr. Part No. 278760 FAZ-C16/2
Each
SGD76.73(exc. GST)
In Stock
Rittal Earthing Strap, 4mm² Wire Range
  • RS Stock No. 263-3733
  • Mfr. Part No. 2564000
Each (In a Pack of 5)
SGD5.214(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB, 3P, 15A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 219-9163
  • Mfr. Part No. M9F42315
Each
SGD533.10(exc. GST)
1
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