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

18 of 999+
Eaton xComfort ECO Distribution Board Enclosure, 12 Way
  • RS Stock No. 258-477
  • Mfr. Part No. 280356 BC-U-2/24-ECO
Each
SGD136.29(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 45A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 268-040
  • Mfr. Part No. 3VA5245-6ED31-1AA0
Each
SGD1,464.95(exc. GST)
Schneider Electric Acti9 1 Phase Distribution Board Enclosure, 34 Way
  • RS Stock No. 339-350
  • Mfr. Part No. SEA9BN4SXP
Each
SGD651.77(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)
Eaton RCCB, 40A, 4 Pole, 100mA, Type S, 230 V ac, 400 V ac
  • RS Stock No. 227-0730
  • Mfr. Part No. 264304 PFGM-40/4/01-S
Each
SGD525.59(exc. GST)
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 654-487
  • Mfr. Part No. C080H350FM
Each
SGD8,154.51(exc. GST)
Littelfuse 100mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4606
  • Mfr. Part No. 0216.100MXP
Each (In a Pack of 10)
SGD1.317(exc. GST)
Better World
Schneider Electric, ComPacT NSX MCCB 3P 63A, Fixed Mount
  • RS Stock No. 254-6319
  • Mfr. Part No. C11H3TM063L
Each
SGD839.13(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 2P, 32A, Type Z
  • RS Stock No. 231-9676
  • Mfr. Part No. 2CDS252001R0538 S202 Z 32A - 10 KA
1 Box of 1
SGD174.63(exc. GST)
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 10A Curve C, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2269
  • Mfr. Part No. A9F07110
Each
SGD52.75(exc. GST)
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 50 kA, Plug In
  • RS Stock No. 231-261
  • Mfr. Part No. 111657 NZMN3-4-AE400-BT
Each
SGD4,846.32(exc. GST)
RS PRO 5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-532
Each (In a Pack of 10)
SGD0.662(exc. GST)
Better World
Siemens SENTRON 5SY6 MCB, 1P, 4A Curve B, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-2269
  • Mfr. Part No. 5SY6104-6
Each
SGD33.59(exc. GST)
Littelfuse PC Board Non Resettable Fuse 125mA, 125V ac/dc
  • RS Stock No. 738-3068
  • Mfr. Part No. 0251.125MAT1L
Each (In a Pack of 10)
SGD2.079(exc. GST)
RS PRO HBC, LBC Fuse Kit
  • RS Stock No. 420-268
1 Kit
SGD98.91(exc. GST)
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-431
Each (In a Pack of 10)
SGD0.602(exc. GST)
Eaton 500mA Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8364
  • Mfr. Part No. C10G0-5
Each (In a Pack of 10)
SGD2.101(exc. GST)
ABB System Pro M Compact S300P MCB, 3+N, 6A Curve C, 415V AC, 100 kA Breaking Capacity
  • RS Stock No. 200-953
  • Mfr. Part No. 2CDS383103R0064
Each
SGD469.88(exc. GST)
Littelfuse 160mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4296
  • Mfr. Part No. 0217.160MXP
Each (In a Pack of 10)
SGD1.417(exc. GST)
RS PRO 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-722
Each (In a Pack of 10)
SGD0.65(exc. GST)
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