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

92 of 999+
In Stock
Siemens 6A Diazed Fuse, gG, 690V ac
  • RS Stock No. 167-687
  • Mfr. Part No. 5SD8006
1 Pack of 5
SGD149.07(exc. GST)
Limited stock
ETA Busbar, 24V dc
  • RS Stock No. 723-4862
  • Mfr. Part No. X222.611.02 GREY BUSBAR (500MM)
Each
SGD65.34(exc. GST)
In Stock
RS PRO 100mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9579
Each (In a Pack of 10)
SGD1.331(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Vigirex RHUs RCD, 2 A, 4 A, 5 A, 6 A, 400mA, 30000mA
  • RS Stock No. 219-8416
  • Mfr. Part No. LV481001
Each
SGD1,314.92(exc. GST)
Temporarily out of stock
Lovato MCB, 3P, 3A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 188-1654
  • Mfr. Part No. P1MBUH3PC03
Each
SGD292.46(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 32A Curve D
  • RS Stock No. 231-9727
  • Mfr. Part No. 2CDS272001R0321 S202M D 32A - 15 KA
1 Box of 1
SGD86.46(exc. GST)
In Stock
SIBA 1A F Glass Cartridge Fuse, 5 x 30mm
  • RS Stock No. 361-8171
  • Mfr. Part No. 171530.1
Each (In a Pack of 10)
SGD4.037(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 32A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 131-955
  • Mfr. Part No. 2CDS272001R0324 S202M-C32
Each
SGD98.82(exc. GST)
In Stock
Mersen 63A NH Fuse, NH1, 500V ac
  • RS Stock No. 270-3073
  • Mfr. Part No. L214669
Each
SGD26.80(exc. GST)
Temporarily out of stock
Schneider Electric, Compact MCCB 4P 800A, Fixed Mount
  • RS Stock No. 247-1788
  • Mfr. Part No. 33384
Each
SGD7,491.52(exc. GST)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-346
  • Mfr. Part No. KV PC 9106
Each
SGD87.32(exc. GST)
Temporarily out of stock
Schneider Electric Tap Off Unit, 434 x 141 x 165mm, KN
  • RS Stock No. 276-9230
  • Mfr. Part No. KNB32CP15F
Each
SGD535.65(exc. GST)
In Stock
Littelfuse 60A Inline Fuse Holder for Maxi Fuse, 32V dc
  • RS Stock No. 787-4388
  • Mfr. Part No. MAHC0001ZXJ
Each
SGD46.30(exc. GST)
In Stock
RS PRO 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 563-750
Each (In a Pack of 10)
SGD0.926(exc. GST)
Being discontinued
RS PRO 800mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-655
Each (In a Pack of 10)
SGD0.478(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 25A, Fixed Mount
  • RS Stock No. 260-9430
  • Mfr. Part No. C10F3TM025
Each
SGD915.18(exc. GST)
In Stock
Siemens Fuse Holder Fuse Block
  • RS Stock No. 162-005
  • Mfr. Part No. 5SF5068
Each
SGD64.68(exc. GST)
In Stock
Better World
Siemens Sentron 5SY4 MCB, 3P, 40A Curve C, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 124-3177
  • Mfr. Part No. 5SY4340-7
Each
SGD233.95(exc. GST)
In Stock
Littelfuse Polyamide PCB Mount Fuse Holder Cover for 5 x 20mm Fuse, IP40
  • RS Stock No. 769-0161
  • Mfr. Part No. 81500000005
Each (In a Pack of 5)
SGD4.322(exc. GST)
Temporarily out of stock
Schneider Electric Resi9 Two Phase Distribution Board, 90 A
  • RS Stock No. 276-8960
  • Mfr. Part No. R9H18403
Each
SGD166.60(exc. GST)
1
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