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

60 of 999+
Temporarily out of stock
Eaton Three Phase Surge Protector, 40kA, 2.2kV, DIN Rail Mount
  • RS Stock No. 120-849
  • Mfr. Part No. 167611 SPCT2-460/4
Each
SGD1,340.61(exc. GST)
In Stock
Schneider Electric Resi9 Two Phase Distribution Board, 90 A
  • RS Stock No. 276-8953
  • Mfr. Part No. R9H13404
Each
SGD173.03(exc. GST)
Temporarily out of stock
ABB High Performance S800N MCB, 2P, 63A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 435-257
  • Mfr. Part No. 2CCS892001R0631 S802N-D63
Each
SGD278.78(exc. GST)
In Stock
Eaton Eaton Moeller xPole 3 Phase Busbar, 415V
  • RS Stock No. 259-107
  • Mfr. Part No. 291471 EVG-16/3PHAS/9MODUL
Each
SGD20.08(exc. GST)
In Stock
Better World
Schneider Electric RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Resi9 Range
  • RS Stock No. 247-2231
  • Mfr. Part No. R9D01616
Each
SGD74.87(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 450A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 256-518
  • Mfr. Part No. 3VA5445-6EF31-0AA0
Each
SGD4,685.97(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 450A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 257-347
  • Mfr. Part No. 3VA5445-6EC31-1AA0
Each
SGD4,483.58(exc. GST)
In Stock
Mersen 2.5A FA Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 188-6877
  • Mfr. Part No. M093345
Each (In a Pack of 10)
SGD7.678(exc. GST)
In Stock
Better World
ABB, XT2S MCCB 3P 480A, Fixed Mount
  • RS Stock No. 236-7493
  • Mfr. Part No. 1SDA067768R1 XT2S 160 MA 80 FF
Each
SGD539.56(exc. GST)
In Stock
Eaton xEffect MCB, 1P, 2A Curve C, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7162
  • Mfr. Part No. 279122 FAZ-C2/1-DC
Each
SGD141.50(exc. GST)
In Stock
Europa Busbar
  • RS Stock No. 849-6279
  • Mfr. Part No. ECWBB6
Each
SGD6.23(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 600A, Fixed Mount
  • RS Stock No. 260-8242
  • Mfr. Part No. C63S3TM600D
Each
SGD4,108.12(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-747
  • Mfr. Part No. 3VA5460-5EF41-0AA0
Each
SGD5,791.30(exc. GST)
In Stock
Littelfuse 125mA F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 738-3185
  • Mfr. Part No. 0KLK.125T
Each
SGD53.48(exc. GST)
In Stock
RS PRO 6.3A Panel Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 563-784
Each
SGD5.99(exc. GST)
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 800A, Fixed Mount
  • RS Stock No. 231-9350
  • Mfr. Part No. 1SDA100741R1 XT6S 800 EkipDip LS/I 800
Each
SGD3,477.83(exc. GST)
In Stock
ABB RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, System Pro M Compact Range
  • RS Stock No. 201-6936
  • Mfr. Part No. 2CSR275180R1064 DS201 M C6 A30
Each
SGD264.45(exc. GST)
In Stock
Electro PJP Earth Rod W. 12mm x 420mm H. 420mm
  • RS Stock No. 263-9091
  • Mfr. Part No. 2223Drill
Each
SGD71.26(exc. GST)
In Stock
Bourns Surface Mount Fuse 3A, 65V dc
  • RS Stock No. 245-9258
  • Mfr. Part No. SF-1206SA300M-2
Each (On a Tape of 10)
SGD1.396(exc. GST)
In Stock
Littelfuse 1A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 738-3172P
  • Mfr. Part No. 0KLK001.T
Each (Supplied in a Bag)
SGD34.70(exc. GST)
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