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

39 of 999+
Limited stock
Eaton 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1212
  • Mfr. Part No. S500-1-R
Each (In a Pack of 10)
SGD0.449(exc. GST)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 1.5A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 259-202
  • Mfr. Part No. 278882 FAZ-D1,5/3
Each
SGD292.96(exc. GST)
In Stock
Littelfuse 30A Green Blade Car Fuse, 32V dc
  • RS Stock No. 787-4132P
  • Mfr. Part No. 0287030.PXCN
Each (Supplied in a Bag)
SGD0.439(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 30A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-870
  • Mfr. Part No. 3VA5230-7ED31-2AA0
Each
SGD1,269.73(exc. GST)
Temporarily out of stock
ABB MCCB 4P 160A, Breaking Capacity 25 kA
  • RS Stock No. 192-0819
  • Mfr. Part No. 1SDA067410R1
Each
SGD922.02(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 4A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3382
  • Mfr. Part No. A9F73204
Each
SGD102.82(exc. GST)
In Stock
Schurter Non-Resettable Fuse Kit
  • RS Stock No. 122-3327
  • Mfr. Part No. 0034.9856
Each
SGD300.00(exc. GST)
In Stock
Better World
ABB Compact Home SH200 MCB, 1P, 32A Curve C, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8251
  • Mfr. Part No. 2CDS211001R0324 SH201-C32
Each
SGD26.60(exc. GST)
In Stock
Phoenix Contact 2A T Cartridge Fuse, 5 x 20mm
  • RS Stock No. 129-481
  • Mfr. Part No. 1207190
Each
SGD14.17(exc. GST)
In Stock
Legrand 1A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6106
  • Mfr. Part No. 0 130 01
Each (In a Box of 10)
SGD3.768(exc. GST)
In Stock
Siemens 200A NH Fuse, NH1, 500V ac
  • RS Stock No. 396-083
  • Mfr. Part No. 3NA3140
Each (In a Pack of 3)
SGD24.003(exc. GST)
In Stock
Siemens 3ZY1122 Removable Terminal for use with SIRIUS devices
  • RS Stock No. 203-3947
  • Mfr. Part No. 3ZY1122-1BA00
Each (In a Pack of 6)
SGD25.263(exc. GST)
In Stock
Better World
Schneider Electric 1+N Phase Surge Protector, 2kA, 1.5kV, DIN Rail Mount
  • RS Stock No. 776-3880
  • Mfr. Part No. A9L16298
Each
SGD499.27(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-4777
  • Mfr. Part No. 3VA2510-5JP42-0AA0
Each
SGD8,314.64(exc. GST)
Temporarily out of stock
Eaton 10A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 703-8771
  • Mfr. Part No. 10NHG000B-690
Each
SGD10.77(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 268-542
  • Mfr. Part No. 3VA6115-6HM31-0AA0
Each
SGD2,817.81(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-504
  • Mfr. Part No. 3VA5220-5ED31-2AA0
Each
SGD1,954.71(exc. GST)
In Stock
ABB RCBO, 16A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 231-9957
  • Mfr. Part No. 2CSR256140R1164 DS203NC C16 A30
Each
SGD317.38(exc. GST)
In Stock
ABB System Pro M Compact S200 MCB, 1P, 10A Curve C, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-6836
  • Mfr. Part No. 2CDS251001R0104 - S201C10
Each
SGD34.28(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 50A Curve D, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 527-9661
  • Mfr. Part No. 2CDS253001R0501 S203-D50
Each
SGD132.18(exc. GST)
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