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

24 of 999+
Schneider Electric EasyPact CVS100...250 Thermal Circuit Breaker - EasyPact CVS 3 Pole 440V ac Voltage Rating Fixed,
  • RS Stock No. 124-540
  • Mfr. Part No. LV525301
Each
SGD986.00(exc. GST)
Better World
Schneider Electric Acti 9 A9N1 MCB, 3P, 100A Curve D
  • RS Stock No. 221-0891
  • Mfr. Part No. A9N18513
Each
SGD635.10(exc. GST)
Eaton RCCB, 40A, 4 Pole, 30mA, Type B, 230 V ac, 400 V ac
  • RS Stock No. 203-9039
  • Mfr. Part No. 300299 PXF-40/4/003-B
Each
SGD995.78(exc. GST)
Eaton 1.5A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7039
  • Mfr. Part No. MDA-1-1-2-R
Each
SGD9.13(exc. GST)
Eaton xEffect FAZ MCB, 2P, 25A, Type Z, 400V AC, 60 V dc Per Pole DC, 10 kA Breaking Capacity
  • RS Stock No. 258-367
  • Mfr. Part No. 278827 FAZ-Z25/2
Each
SGD174.50(exc. GST)
ABB MCCB Molded Case Circuit Breaker 3P 320A, Fixed Mount
  • RS Stock No. 250-4081
  • Mfr. Part No. 1SDA054350R1
Each
SGD3,847.78(exc. GST)
RS PRO 3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5963
Each (In a Pack of 10)
SGD0.565(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)
Better World
Siemens SIRIUS Electronic Circuit Breaker 20A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-065
  • Mfr. Part No. 3RV2431-4BA10
Each
SGD269.93(exc. GST)
Siemens 800A NH Fuse, NH4, 400 - 500V ac/dc
  • RS Stock No. 269-8309
  • Mfr. Part No. 3NA3475
Each
SGD472.63(exc. GST)
Siemens 200A NH Fuse, NH1, 500V ac
  • RS Stock No. 396-083
  • Mfr. Part No. 3NA3140
Each (In a Pack of 3)
SGD24.003(exc. GST)
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 3A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8596
  • Mfr. Part No. EZ9F16103
Each
SGD6.93(exc. GST)
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 50A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9715
  • Mfr. Part No. LV510304
Each
SGD243.69(exc. GST)
Better World
Schneider Electric 250V ac Push Button Push Button
  • RS Stock No. 790-9184
  • Mfr. Part No. A9E18036
Each
SGD70.49(exc. GST)
Littelfuse 50A T Cartridge Fuse, 22 x 48mm
  • RS Stock No. 876-8331
  • Mfr. Part No. CCMR-50
Each
SGD136.92(exc. GST)
SIBA 5A M Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3509
  • Mfr. Part No. 70-010-05/5A
Each (In a Pack of 5)
SGD4.834(exc. GST)
Hager RCCB, 40A, 2 Pole, 30mA
  • RS Stock No. 144-4887
  • Mfr. Part No. CDC140F
Each
SGD375.34(exc. GST)
Mersen 10A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 188-7296
  • Mfr. Part No. L200754
Each (In a Pack of 10)
SGD4.732(exc. GST)
Schneider Electric 1+N Phase Surge Arrester, 20kA, 1.3kV, DIN Rail Mount
  • RS Stock No. 654-811
  • Mfr. Part No. EZ9L33620KIT
Each
SGD168.41(exc. GST)
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8543
Each
SGD264.39(exc. GST)
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