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

46578 Products showing for Fuses & Circuit Breakers

231 / 999+
Temporarily out of stock
ABB S802 Circuit Breaker, 2P, 10A Curve C, 690V AC, 250V DC, 4.5 kA Breaking Capacity
  • RS Stock No. 287-6377
  • Mfr. Part No. 2CCS892001R0104
Each
MYR752.77
Temporarily out of stock
ABB S401M MCB, 1P, 40A Curve K, 254V AC, 12V DC, 15 kA Breaking Capacity
  • RS Stock No. 140-316
  • Mfr. Part No. 2CCS571001R0557
Each
MYR356.74
Temporarily out of stock
Allen Bradley MCCB Molded Case Circuit Breaker 3P 25A
  • RS Stock No. 255-1651
  • Mfr. Part No. 140G-H3C3-C25
Each
MYR2,374.48
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 2P 30A, Breaking Capacity 85 KA
  • RS Stock No. 119-603
  • Mfr. Part No. C10M2TM030
Each
MYR1,710.31
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 4A Curve D, 400V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9658
  • Mfr. Part No. A9F75204
Each
MYR529.27
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA Ekip Touch LSIG, 4 channels
  • RS Stock No. 259-3711
  • Mfr. Part No. 1SDA071686R1
Each
MYR64,119.19
In Stock
Legrand DX3 RCD, 32A, 1+N Pole, 30mA, Type C
  • RS Stock No. 731-9865
  • Mfr. Part No. 4 107 16
Each
MYR1,809.98
Temporarily out of stock
Siemens 125A Slotted Tag Fuse, NH000, 690V
  • RS Stock No. 230-3020
  • Mfr. Part No. 3NE8722-1
Each (In a Pack of 10)
MYR251.19
In Stock
Schurter 2.5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 789-7832
  • Mfr. Part No. 0034.1520
Each (In a Bag of 10)
MYR1.368
Temporarily out of stock
Siemens ALPHA Feeder Terminal for use with Distribution boards
  • RS Stock No. 216-5996
  • Mfr. Part No. 8WA2870
Each (In a Pack of 50)
MYR10.101
In Stock
Wickmann 60A Inline Fuse Holder, 58V dc
  • RS Stock No. 174-0617
  • Mfr. Part No. FHJC1002G
1 Pack of 1
MYR55.19
In Stock
Eaton MCB, 1+N, 16A Curve B
  • RS Stock No. 230-1067
  • Mfr. Part No. 264703 PLG4-B16/1N
Each
MYR231.87
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 500A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9798
  • Mfr. Part No. LV563315
Each
MYR10,788.55
Temporarily out of stock
ABB RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6973
  • Mfr. Part No. 2CSR255480R1104
Each
MYR943.91
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 800A , DIN Rail
  • RS Stock No. 127-549
  • Mfr. Part No. 183475 IZMX16N3-P08W-1
Each
MYR39,392.04
Temporarily out of stock
Siemens, SENTRON MCCB 3P 110A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-419
  • Mfr. Part No. 3VA5211-5ED31-2AA0
Each
MYR6,193.11
Limited stock
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2755
  • Mfr. Part No. A9XAH157
Each
MYR480.28
In Stock
Eaton 100A British Standard Fuse, LET, 150 V dc, 240V ac, 41.8mm
  • RS Stock No. 156-8850
  • Mfr. Part No. 100LET
Each
MYR110.47
Temporarily out of stock
Siemens ALPHA Kit
  • RS Stock No. 213-2413
  • Mfr. Part No. 8GK9100-0KK00
Each
MYR131.30
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board, 14 Way, 125 A
  • RS Stock No. 339-615
  • Mfr. Part No. SEA9APN14
Each
MYR1,175.03
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