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

47 of 999+
Being discontinued
RS PRO PC Board Non Resettable Fuse, Axial 500mA, 125V ac/dc
  • RS Stock No. 764-9457
Each (In a Pack of 10)
SGD0.785(exc. GST)
In Stock
RS PRO 3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8131
Each (In a Pack of 50)
SGD0.521(exc. GST)
In Stock
ABB F200 RCCB, 16A, 2 Pole, 10mA, Type AC, 230V ac
  • RS Stock No. 231-9897
  • Mfr. Part No. 2CSF202001R0160 F202 AC-16/0.01
Each
SGD282.61(exc. GST)
In Stock
ABB RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6892
  • Mfr. Part No. 2CSR275180R1105 DS201 M B10 A30
Each
SGD259.32(exc. GST)
Temporarily out of stock
Better World
ABB, XT4L MCCB 4P 125A, Fixed Mount
  • RS Stock No. 236-6731
  • Mfr. Part No. 1SDA068388R1 XT4L 160 TMA 125A 3P+N FF
Each
SGD2,007.50(exc. GST)
In Stock
Eaton 300mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7143
  • Mfr. Part No. MDL-3-10-R
Each
SGD2.43(exc. GST)
In Stock
ABB Emax 2, Tmax XT Terminal for use with Circuit Breaker
  • RS Stock No. 231-9311
  • Mfr. Part No. 1SDA073906R1 E6.2-XT7/M 10pz
Each
SGD101.35(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 200A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-277
  • Mfr. Part No. 3VA5220-1MH31-0AA0
Each
SGD2,411.45(exc. GST)
Temporarily out of stock
Schurter 5A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 173-7965
  • Mfr. Part No. 0090.0005
Each (In a Box of 10)
SGD21.988(exc. GST)
In Stock
RS PRO MCB, 1P, 2A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0198
Each
SGD14.90(exc. GST)
In Stock
Better World
ABB Compact Home SH200 MCB, 3P, 6A Curve B, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 539-8273
  • Mfr. Part No. 2CDS213001R0065 SH203-B6
Each
SGD102.56(exc. GST)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 62mA, 125V ac/dc
  • RS Stock No. 738-3093
  • Mfr. Part No. 0259.062T
Each
SGD8.70(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 45A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 269-788
  • Mfr. Part No. 3VA5245-7ED31-2AA0
Each
SGD1,728.05(exc. GST)
In Stock
Eaton 8A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7092
  • Mfr. Part No. MDA-8-R
Each
SGD9.72(exc. GST)
In Stock
Eaton 400A Bolted Tag Fuse, FMM, 500 V dc, 690V ac, 85mm
  • RS Stock No. 182-1524
  • Mfr. Part No. 400FMM
Each
SGD236.05(exc. GST)
Temporarily out of stock
Siemens Surge Protector, 1.4kV, Clip-On Mount
  • RS Stock No. 211-0185
  • Mfr. Part No. 5SD7432-7
Each
SGD339.05(exc. GST)
Temporarily out of stock
Better World
ABB SN201 MCB, 1P, 32A Curve C
  • RS Stock No. 237-1426
  • Mfr. Part No. 2CSS255101R0324
Each
SGD62.62(exc. GST)
In Stock
Littelfuse Automotive Fuse Kit
  • RS Stock No. 219-9556
  • Mfr. Part No. 00940957XXN
Each
SGD92.43(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 20A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3307
  • Mfr. Part No. A9F54120
Each
SGD50.82(exc. GST)
Temporarily out of stock
ABB S800U MCB, 2P, 10A, Type Z, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-901
  • Mfr. Part No. 2CCS862017R0105
Each
SGD380.59(exc. GST)
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