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

5 of 999+
In Stock
Better World
Schneider Electric iID RCCB, 63A, 4 Pole, 30mA, 500V
  • RS Stock No. 806-7341
  • Mfr. Part No. A9R41463
Each
SGD461.62(exc. GST)
In Stock
Littelfuse 150A Orange Bolt Down Car Fuse, 32V dc
  • RS Stock No. 787-4394
  • Mfr. Part No. 0298150.ZXEH
Each
SGD10.07(exc. GST)
In Stock
Legrand 4115 RCD, 40A, 1+N Pole, 30mA, Type A
  • RS Stock No. 863-7773
  • Mfr. Part No. 4 115 55
Each
SGD131.71(exc. GST)
In Stock
Schurter 12.5A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 144-1842
  • Mfr. Part No. 8020.5022.G
Each (In a Bag of 10)
SGD1.387(exc. GST)
Temporarily out of stock
HENSEL 1, 3 Phase Distribution Board, 54 Way, 63 A
  • RS Stock No. 183-2863
  • Mfr. Part No. KV9354M
Each
SGD536.51(exc. GST)
In Stock
SIBA 2.5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3245
  • Mfr. Part No. 70-007-33/2.5A
Each (In a Pack of 10)
SGD0.723(exc. GST)
In Stock
SIBA 1.25A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3302
  • Mfr. Part No. 70-007-65/1.25A
Each (In a Pack of 10)
SGD0.601(exc. GST)
In Stock
Mersen 63A DIII Diazed Fuse, E33 Thread Size, gG, 500V
  • RS Stock No. 377-0522
  • Mfr. Part No. R215088
Each (In a Pack of 5)
SGD5.686(exc. GST)
In Stock
Siemens 16A Diazed Fuse, gG, 500/440V ac/dc
  • RS Stock No. 167-680
  • Mfr. Part No. 5SB2611
1 Pack of 25
SGD27.64(exc. GST)
Temporarily out of stock
ABB F200 RCCB, 100A, 4 Pole, 300mA, Type A, 277 V ac, 480 V ac
  • RS Stock No. 177-5093
  • Mfr. Part No. 2CSF204201R3900 F204 A S-100/0,3
Each
SGD544.41(exc. GST)
In Stock
Eaton 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1341
  • Mfr. Part No. S506-2-R
Each (In a Pack of 10)
SGD0.331(exc. GST)
In Stock
Mersen 1A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2882
  • Mfr. Part No. R302787
1 Box of 10
SGD115.54(exc. GST)
In Stock
Wickmann 50A Black Bolt Down Car Fuse, 32V dc
  • RS Stock No. 174-0733
  • Mfr. Part No. 0498050.M
Each (In a Pack of 10)
SGD2.376(exc. GST)
In Stock
Eaton 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 848-3024
  • Mfr. Part No. BK-GMA-2-R
Each
SGD0.85(exc. GST)
In Stock
Littelfuse 10A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0017
  • Mfr. Part No. 0312010.HXP
Each (In a Pack of 10)
SGD0.569(exc. GST)
In Stock
Mersen 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P+N, 690V ac
  • RS Stock No. 189-5334
  • Mfr. Part No. G1062698 / CMC101N
Each
SGD27.01(exc. GST)
Limited stock
ETA REX12 Electronic Circuit breaker 6A 24V REX12-T, 1 channels , DIN Rail Mount
  • RS Stock No. 175-0367
  • Mfr. Part No. REX12-TA1-107-DC24V-6A
Each
SGD83.18(exc. GST)
In Stock
Schurter LBC Fuse Kit
  • RS Stock No. 167-9219
  • Mfr. Part No. 7189.0009
Each
SGD369.80(exc. GST)
In Stock
Schurter 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 1kV
  • RS Stock No. 712-4793P
  • Mfr. Part No. 0091.0001
Each (Supplied in a Box)
SGD26.50(exc. GST)
In Stock
nVent ERIFLEX ERIFLEX Busbar
  • RS Stock No. 277-6178
  • Mfr. Part No. 568662
Each
SGD45.34(exc. GST)
1
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