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

54 of 999+
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
Better World
Schneider Electric Surge Arrester, 40kA, 800V ac, DIN Rail Mount
  • RS Stock No. 219-8275
  • Mfr. Part No. A9L40271
Each
SGD332.24(exc. GST)
In Stock
Eaton 16A British Standard Fuse, A2, 550V ac, 73mm
  • RS Stock No. 413-349
  • Mfr. Part No. AAO16
Each (In a Pack of 5)
SGD10.142(exc. GST)
Temporarily out of stock
Better World
Siemens RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6157
  • Mfr. Part No. 5SU1324-6KX32
Each
SGD288.97(exc. GST)
Being discontinued
RS PRO 1.6A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-728
Each (In a Pack of 10)
SGD0.299(exc. GST)
Temporarily out of stock
Schneider Electric Acti 9 Acti9 iDT40N XA MCB, 3+N, 40A Curve C, 400V AC
  • RS Stock No. 238-3439
  • Mfr. Part No. A9PA4740
Each
SGD444.28(exc. GST)
In Stock
Schurter 6.3A Inline Fuse Holder for 5 x 20mm Fuse, 32V dc
  • RS Stock No. 703-2811
  • Mfr. Part No. 8601.2000
Each (In a Bag of 10)
SGD3.089(exc. GST)
Temporarily out of stock
Schneider Electric 1+N Phase Surge Arrester, 20kA, 1.4kV, DIN Rail Mount
  • RS Stock No. 654-748
  • Mfr. Part No. A9L20500
Each
SGD583.88(exc. GST)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 100A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9718
  • Mfr. Part No. LV510307
Each
SGD234.99(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40N MCB, 1P, 20A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 191-6122
  • Mfr. Part No. A9P34620
Each
SGD212.18(exc. GST)
Temporarily out of stock
ABB MISTRAL65-65H Mounting Plate
  • RS Stock No. 225-5903
  • Mfr. Part No. 1SL1920A00
Each
SGD30.34(exc. GST)
In Stock
Eaton 3.15A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 849-5576
  • Mfr. Part No. GMA-3-15-R
Each
SGD5.10(exc. GST)
In Stock
RS PRO 1A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 413-197
Each (In a Pack of 10)
SGD1.738(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
Siemens 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 657-1429
  • Mfr. Part No. 3NC1091
Each (In a Pack of 12)
SGD39.258(exc. GST)
In Stock
Littelfuse 4A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0124
  • Mfr. Part No. 0313004.HXP
Each (In a Pack of 5)
SGD1.77(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-119
  • Mfr. Part No. 3VA6610-6HM32-0AA0
Each
SGD11,411.34(exc. GST)
Temporarily out of stock
Eaton 7A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 851-1390
  • Mfr. Part No. MDQ-7
Each (In a Pack of 5)
SGD11.572(exc. GST)
Temporarily out of stock
Sensata Airpax Airpax Thermal Circuit Breaker - AP7 Single Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0178
  • Mfr. Part No. AP7-1-51-203
Each
SGD798.51(exc. GST)
In Stock
Siemens 63A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1130
  • Mfr. Part No. 5SE2363
Each (In a Pack of 10)
SGD6.095(exc. GST)
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