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

70 of 999+
In Stock
Schneider Electric Compact Ns630B...1600, Compact Nsx, Compact Nsx Dc, Powerpact Multistandard Line Terminator for use
  • RS Stock No. 221-1305
  • Mfr. Part No. TRV00880
Each
SGD58.83(exc. GST)
Temporarily out of stock
Better World
Schneider Electric GFP RCCB, 25A, 2 Pole, 26mA, 277V ac
  • RS Stock No. 211-2462
  • Mfr. Part No. M9R41225
Each
SGD404.64(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T MCB, 1+N, 10A Curve C, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 191-6088
  • Mfr. Part No. A9P22610
Each
SGD67.18(exc. GST)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 320A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9782
  • Mfr. Part No. LV540308
Each
SGD1,303.11(exc. GST)
In Stock
Littelfuse 80A Natural BF1 Car Fuse, 32V dc
  • RS Stock No. 431-6731
  • Mfr. Part No. 153.5631.5801
Each (In a Pack of 5)
SGD4.822(exc. GST)
In Stock
Better World
Siemens Sentron 5SY6 MCB, 1P, 32A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 489-6675
  • Mfr. Part No. 5SY6132-6
Each
SGD24.68(exc. GST)
In Stock
Better World
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 191-6073
  • Mfr. Part No. A9DA2610
Each
SGD310.01(exc. GST)
In Stock
RS PRO 10A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-061
Each (In a Pack of 10)
SGD2.134(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 200A, Fixed Mount
  • RS Stock No. 260-8049
  • Mfr. Part No. C25W3TM200
Each
SGD4,495.42(exc. GST)
In Stock
Eaton xEffect MCB, 2P, 10A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4747
  • Mfr. Part No. 168071 FAZ6-D10/2
Each
SGD116.60(exc. GST)
In Stock
Legrand 4115 RCD, 16A, 1+N Pole, 10mA, Type AC
  • RS Stock No. 863-7754
  • Mfr. Part No. 4 115 00
Each
SGD153.68(exc. GST)
Temporarily out of stock
Littelfuse 50A T Cartridge Fuse, 22 x 48mm
  • RS Stock No. 876-8331
  • Mfr. Part No. CCMR-50
Each
SGD136.92(exc. GST)
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-450
  • Mfr. Part No. KV 1512 M
Each
SGD142.58(exc. GST)
In Stock
Schneider Electric Acti9 iID RCCB, 80A, 2 Pole, 100mA, Type AC, 220 → 240V ac
  • RS Stock No. 130-500
  • Mfr. Part No. A9R12280
Each
SGD426.04(exc. GST)
In Stock
ABB RCCB, 40A, 4 Pole
  • RS Stock No. 189-5642
  • Mfr. Part No. 2CSF204023R1400 F204 AC-40/0,03-L
Each
SGD173.18(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 25A Current Rating
  • RS Stock No. 175-1538
  • Mfr. Part No. GV4PE25B
Each
SGD911.37(exc. GST)
In Stock
Better World
Schneider Electric TeSys for use with TeSys GV-U
  • RS Stock No. 211-2540
  • Mfr. Part No. GVAPL01
Each
SGD133.45(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-872
  • Mfr. Part No. A9D07225
Each
SGD1,014.64(exc. GST)
In Stock
ABB 32A Centred Tag Fuse, NH0, 500V
  • RS Stock No. 779-9993
  • Mfr. Part No. 1SCA022627R2360
Each
SGD17.36(exc. GST)
In Stock
RS PRO PC Board Non Resettable Fuse 2A, 250V ac
  • RS Stock No. 911-3540
Each (In a Pack of 10)
SGD0.412(exc. GST)
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