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

49112 Products showing for Fuses & Circuit Breakers

6 of 999+
In Stock
Better World
Schneider Electric iID RCCB, 25A, 2 Pole, 30mA
  • RS Stock No. 734-9125
  • Mfr. Part No. A9R11225
Each
SGD277.71(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 2A, 125V ac/dc
  • RS Stock No. 219-6103
  • Mfr. Part No. 0154002.DR
Each (In a Pack of 10)
SGD1.548(exc. GST)
In Stock
Eaton 16A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8399P
  • Mfr. Part No. C10G16
Each (Supplied in a Box)
SGD1.985(exc. GST)
In Stock
Eaton xPole MCB, 2P, 6A Curve C, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 864-4355
  • Mfr. Part No. 242399 PLSM-C6/2-MW
Each
SGD123.49(exc. GST)
Temporarily out of stock
ABB F200 RCCB, 100A, 4 Pole, 300mA, Type A, 277 V ac, 480 V ac
  • RS Stock No. 177-5093
  • Mfr. Part No. 2CSF204201R3900 F204 A S-100/0,3
Each
SGD544.41(exc. GST)
In Stock
SIBA 40A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 247-4201
  • Mfr. Part No. 50-124-06/40A
Each
SGD28.07(exc. GST)
Temporarily out of stock
Schneider Electric
  • RS Stock No. 230-2336
  • Mfr. Part No. GK2AF01
Each
SGD32.30(exc. GST)
In Stock
Littelfuse 2.5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3079
  • Mfr. Part No. 021702.5MXP
Each (In a Pack of 10)
SGD0.454(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 16A Curve C, 440V AC, 180V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-3284
  • Mfr. Part No. A9F87316
Each
SGD401.92(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 20A Curve K, 440V AC, 20 kA Breaking Capacity
  • RS Stock No. 514-0232
  • Mfr. Part No. 2CDS253001R0487 S203-K20
Each
SGD185.48(exc. GST)
In Stock
SIBA 25A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 247-4223
  • Mfr. Part No. 50-124-06/25A
Each
SGD13.24(exc. GST)
In Stock
Wickmann 2A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 174-0652
  • Mfr. Part No. 0477002.MXP
Each (In a Pack of 5)
SGD1.636(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Insulation accessory for use with Compact Nsx, Easypact Cvs
  • RS Stock No. 221-1261
  • Mfr. Part No. LV432579
Each
SGD80.31(exc. GST)
Being discontinued
RS PRO 315mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-611
Each (In a Pack of 10)
SGD0.562(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 3120-N 5 Pole 50 V DC, 240 V AC Voltage Rating, 20A Current Rating
  • RS Stock No. 210-2109
  • Mfr. Part No. 3120-N554-P7T1-W02D-20A
Each
SGD61.34(exc. GST)
In Stock
SIBA 200mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3208
  • Mfr. Part No. 70-007-33/0.2A
Each (In a Pack of 10)
SGD0.361(exc. GST)
In Stock
Eaton 2A Slow-Blow Cartridge Fuse, 14 x 51mm
  • RS Stock No. 228-675
  • Mfr. Part No. C14M2 CYLINDRICAL FUSE 14 x 51 2A AM 690V AC
1 Pack of 10
SGD38.75(exc. GST)
Temporarily out of stock
315A NH Fuse, 63 x 40 x 135mm, 440V ac
  • RS Stock No. 263-437
  • Mfr. Part No. 315NHG1B NH FUSE 315A 440V GG/GL SIZE 1
1 Pack of 3
SGD48.00(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 32A Curve B, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7576
  • Mfr. Part No. 2CDS252001R0325 S202-B32
Each
SGD75.51(exc. GST)
Temporarily out of stock
ABB 315A Tag Fuse, NH1, 500V
  • RS Stock No. 250-4432
  • Mfr. Part No. 1SCA022697R7810
1 Box of 3
SGD106.47(exc. GST)
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