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

87 of 999+
In Stock
Eaton 3A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-560
  • Mfr. Part No. TDC180-3A
Each (In a Pack of 10)
SGD2.183(exc. GST)
Limited stock
ABB 32A Fuse Holder for 10 x 38mm Fuse, 2P, 400V
  • RS Stock No. 289-1624
  • Mfr. Part No. 2CSM264383R1801
Each
SGD12.41(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 25A Curve C, 500V DC
  • RS Stock No. 772-1533
  • Mfr. Part No. A9N61533
Each
SGD143.93(exc. GST)
In Stock
Siemens 6A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1045
  • Mfr. Part No. 5SE2306
Each (In a Pack of 10)
SGD1.779(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 2A Curve D, 400V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9646
  • Mfr. Part No. A9F75202
Each
SGD157.40(exc. GST)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 4P, 32A, Type Z, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 204-411
  • Mfr. Part No. 2CDS274001R0538
Each
SGD465.53(exc. GST)
In Stock
Better World
Schneider Electric 250V ac Push Button Push Button
  • RS Stock No. 790-9178
  • Mfr. Part No. A9E18037
Each
SGD91.64(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 40A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 178-8058
  • Mfr. Part No. LV426103
Each
SGD411.64(exc. GST)
In Stock
ABB Tmax T Shunt Opening Release for use with MCCB
  • RS Stock No. 232-0105
  • Mfr. Part No. 1SDA054863R1 24VAC/DC T4-6
Each
SGD235.15(exc. GST)
In Stock
Phoenix Contact Surge Protector, 20kA, DIN Rail Mount
  • RS Stock No. 207-2731
  • Mfr. Part No. 2906798
Each
SGD158.31(exc. GST)
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 4A Curve C, 277V AC
  • RS Stock No. 256-6796
  • Mfr. Part No. M9F52204
Each
SGD402.99(exc. GST)
In Stock
Eaton 1.25kA Centred Tag Fuse, NH3, 690V ac
  • RS Stock No. 182-1377
  • Mfr. Part No. 170M8554D
Each
SGD1,538.98(exc. GST)
In Stock
Eaton 4A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 851-1205
  • Mfr. Part No. KTK-4
Each
SGD19.08(exc. GST)
In Stock
ABB Tmax Undervoltage Release for use with Tmax XT
  • RS Stock No. 237-5984
  • Mfr. Part No. 1SDA054884R1 UVR 230VAC/DC T4-6
Each
SGD336.40(exc. GST)
Unavailable
Schneider Electric, NSX MCCB 3P 630A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 219-8377
  • Mfr. Part No. LV432814
Each
SGD6,263.65(exc. GST)
In Stock
Schneider Electric RCBO, 16A Current Rating, 1P Poles, Type C, Acti9 Range
  • RS Stock No. 245-087
  • Mfr. Part No. A9D19216
Each
SGD477.19(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Multi 9 C60N MCB, 2P, 4A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 214-2063
  • Mfr. Part No. M9F11204
Each
SGD266.89(exc. GST)
In Stock
Mersen 2A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 230-3519
  • Mfr. Part No. Y219234
Each (In a Pack of 10)
SGD5.311(exc. GST)
Currently unavailable
ABB RCCB, 32A, 4 Pole, 300mA, Type C, 415V ac
  • RS Stock No. 246-2415
  • Mfr. Part No. 2CCG001758R0001
Each
SGD816.12(exc. GST)
In Stock
SIBA 4A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 783-3365
  • Mfr. Part No. 70-059-60/4A
Each (In a Pack of 10)
SGD1.008(exc. GST)
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