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

94 of 999+
Temporarily out of stock
ABB SU 200 M Circuit Breaker, 2P, 15A Curve K, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 287-6395
  • Mfr. Part No. 2CDS272337R0457
Each
SGD163.89(exc. GST)
In Stock
Eaton 200A British Standard Fuse, FM, 690 V ac, 500V dc, 80 → 85mm
  • RS Stock No. 156-9061
  • Mfr. Part No. 200FM
Each
SGD89.17(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 2P 16A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 346-752
  • Mfr. Part No. C10F2TM016
Each
SGD973.19(exc. GST)
In Stock
Eaton 20A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8392P
  • Mfr. Part No. C10G20
Each (Supplied in a Box)
SGD1.967(exc. GST)
In Stock
Schurter Fuse Holder
  • RS Stock No. 867-1782
  • Mfr. Part No. 4301.1413
Each
SGD8.65(exc. GST)
In Stock
Schurter 630mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7689
  • Mfr. Part No. 0034.1514
Each (In a Pack of 10)
SGD0.547(exc. GST)
In Stock
Legrand Circuit Breaker, 2P, 16A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 266-1395
  • Mfr. Part No. 408015
Each
SGD213.96(exc. GST)
Temporarily out of stock
ABB IEC Range Busbar for use with S200C
  • RS Stock No. 250-4791
  • Mfr. Part No. 2CDL804142R1110
1 Box of 10
SGD2,969.06(exc. GST)
In Stock
Eaton EVG 2 Phase Busbar, 415V
  • RS Stock No. 256-651
  • Mfr. Part No. 291483 EVG-16/2PHAS/6MODUL/HI
Each
SGD15.51(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 C120N MCB, 2P, 125A Curve C, 440V AC, 250V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3067
  • Mfr. Part No. A9N18363
Each
SGD755.63(exc. GST)
In Stock
Eaton, xEnergy MCCB 3P 80A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 454-8124
  • Mfr. Part No. 259084 NZMN1-A80
Each
SGD805.69(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 6.3A, 125V
  • RS Stock No. 738-2854
  • Mfr. Part No. 015406.3DR
Each (In a Pack of 10)
SGD2.93(exc. GST)
Temporarily out of stock
Eaton Phase Busbar 2 Phase Busbar, 277V
  • RS Stock No. 231-540
  • Mfr. Part No. 121985 BB-UL-18/2P-3M/39
Each
SGD96.36(exc. GST)
Temporarily out of stock
30A Fuse Holder, 1P, 600V ac/dc
  • RS Stock No. 262-610
  • Mfr. Part No. CHCC1DIU
1 Pack of 12
SGD218.19(exc. GST)
In Stock
RS PRO 4A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 721-1579
Each (In a Pack of 10)
SGD2.921(exc. GST)
In Stock
SIBA 225A White Automotive Car Fuse, 80V dc
  • RS Stock No. 161-1835
  • Mfr. Part No. 9005805.225
Each
SGD9.54(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 2P, 32A Curve C, 440V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2369
  • Mfr. Part No. M9F22232
Each
SGD56.36(exc. GST)
In Stock
SIBA 500mA F Glass Cartridge Fuse, 5 x 30mm
  • RS Stock No. 361-8159
  • Mfr. Part No. 171530.0,5
Each (In a Pack of 10)
SGD2.89(exc. GST)
In Stock
ABB System Pro M Compact S200M MCB, 1P, 16A Curve B, 253V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-5995
  • Mfr. Part No. 2CDS271001R0165 S201M-B16
Each
SGD34.49(exc. GST)
In Stock
Schneider Electric Multi 9 Busbar Connector, 1000V, 18mm Pitch
  • RS Stock No. 214-2108
  • Mfr. Part No. M9XUPC04
Each
SGD133.13(exc. GST)
1
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