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

76 of 999+
In Stock
Better World
ABB System Pro M Compact S200 MCB, 4P, 63A Curve C, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7829
  • Mfr. Part No. 2CDS254001R0634 S204-C63
Each
SGD228.82(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 3m, 250A, KS Series
  • RS Stock No. 219-8915
  • Mfr. Part No. KSA250ED43012
Each
SGD1,292.84(exc. GST)
Limited stock
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2761
  • Mfr. Part No. A9XAH257
Each
SGD151.99(exc. GST)
In Stock
SIBA 2A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3309
  • Mfr. Part No. 70-007-65/2A
Each (In a Pack of 10)
SGD0.927(exc. GST)
In Stock
Eaton RCCB, 63A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 227-0738
  • Mfr. Part No. 267448 PFGM-63/2/003-A
Each
SGD122.19(exc. GST)
Currently unavailable
Eaton 10A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-3939
  • Mfr. Part No. BK-KTK-R-10
Each
SGD62.34(exc. GST)
Temporarily out of stock
ABB F200 RCCB, 40A, 4 Pole, 100mA, Type A, 230V ac
  • RS Stock No. 225-6129
  • Mfr. Part No. 2CSF204101R2400 F204 A-40/0,1
Each
SGD285.55(exc. GST)
In Stock
Murrelektronik Limited Electronic Circuit Breaker
  • RS Stock No. 123-6691
  • Mfr. Part No. 9000-41034-0401005
Each
SGD297.76(exc. GST)
Limited stock
Better World
Siemens Sentron 5SY4 MCB, 3P, 10A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1372
  • Mfr. Part No. 5SY4310-7
Each
SGD208.85(exc. GST)
In Stock
ABB F200 RCCB, 63A, 4 Pole, 230/400V ac
  • RS Stock No. 289-1619
  • Mfr. Part No. 2CSF204023R3630
Each
SGD211.77(exc. GST)
In Stock
RS PRO Residential RCCBs, 25A, 4 Pole, 30mA, Type A, 400V
  • RS Stock No. 284-2372
Each
SGD92.75(exc. GST)
In Stock
Better World
ABB, Protecta MCCB 3P 250A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 831-9181
  • Mfr. Part No. 1SDA068208R1 XT1D 160 3p F F
Each
SGD566.88(exc. GST)
Temporarily out of stock
Schneider Electric Surge Arrester, DIN Rail Mount
  • RS Stock No. 247-1640
  • Mfr. Part No. 16363
Each
SGD9,202.69(exc. GST)
Temporarily out of stock
Eaton 63A British Standard Fuse, A4, 500V ac, 94mm
  • RS Stock No. 415-323
  • Mfr. Part No. CEO63
Each
SGD17.98(exc. GST)
In Stock
Better World
Siemens SENTRON MCB, 1P, 10A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 189-3187
  • Mfr. Part No. 5SL6110-6
Each
SGD11.20(exc. GST)
Temporarily out of stock
Schurter 6.3A Inline Fuse Holder for 6.3 x 32mm Fuse, 32V dc
  • RS Stock No. 703-2824
  • Mfr. Part No. 8601.2005
Each (In a Bag of 10)
SGD2.638(exc. GST)
In Stock
Wickmann Inline Fuse Holder
  • RS Stock No. 174-0282
  • Mfr. Part No. 01530002H
Each (In a Box of 100)
SGD1.841(exc. GST)
In Stock
RS PRO 2A British Standard Fuse, F1, 550V ac
  • RS Stock No. 521-2882
Each (In a Pack of 5)
SGD6.676(exc. GST)
In Stock
Schurter 751 Bronze PCB Mount Fuse Clip for 5 x 20mm
  • RS Stock No. 876-7830
  • Mfr. Part No. 0751.0052
Each (In a Pack of 100)
SGD0.219(exc. GST)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 63A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9716
  • Mfr. Part No. LV510305
Each
SGD243.69(exc. GST)
1
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