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

118 / 999+
In Stock
Eaton 100A Bolted Tag Fuse, FE, 500 V dc, 690V ac, 63.5mm
  • RS Stock No. 182-1391
  • Mfr. Part No. 100FE
Each (In a Box of 10)
MYR115.534
In Stock
RS PRO 7A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 413-232
Each (In a Pack of 10)
MYR4.00
In Stock
Better World
Siemens SENTRON 5SL6 MCB, 1+N, 6A Curve B, 6 kA Breaking Capacity
  • RS Stock No. 201-3738
  • Mfr. Part No. 5SL6006-6
Each
MYR229.87
In Stock
Littelfuse 3.15A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4426
  • Mfr. Part No. 02173.15MXP
Each (In a Pack of 10)
MYR1.693
Temporarily out of stock
Eaton 63A Centred Tag Fuse, NH01, 500V ac
  • RS Stock No. 703-8692
  • Mfr. Part No. 63NHG01B
Each
MYR50.51
In Stock
Eaton 15A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 480V
  • RS Stock No. 225-8218
  • Mfr. Part No. BK-HVP-HH-R
Each (In a Pack of 5)
MYR46.956
Temporarily out of stock
ABB Residual Current Release for use with Four-Pole XT1
  • RS Stock No. 192-0912
  • Mfr. Part No. 1SDA067125R1
Each
MYR4,942.78
In Stock
ABB FH200 RCCB, 40A, 4 Pole, 300mA, Type AC
  • RS Stock No. 183-3637
  • Mfr. Part No. 2CSF204023R3400
Each
MYR953.34
In Stock
Schurter 10A Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 269-3816
  • Mfr. Part No. 3101.0320
Each
MYR15.62
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity
  • RS Stock No. 231-9934
  • Mfr. Part No. 2CSR255151R1165 DSE201 B16 A30
Each
MYR417.59
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 2A Curve C, 440V AC, 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2291
  • Mfr. Part No. A9F07202
Each
MYR605.56
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 630A, Fixed Mount
  • RS Stock No. 260-8228
  • Mfr. Part No. C63N42D630
Each
MYR33,329.59
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 32A Curve D, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3489
  • Mfr. Part No. A9F55132
Each
MYR209.08
Temporarily out of stock
Better World
Schneider Electric Busbar
  • RS Stock No. 212-0203
  • Mfr. Part No. LA7F403
Each
MYR520.60
In Stock
ABB PS1 1 Phase Busbar, 400V ac, 17.5mm Pitch
  • RS Stock No. 489-6568
  • Mfr. Part No. 2CDL210001R1060 - PS1/60
Each
MYR225.65
In Stock
ABB 18 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1896
  • Mfr. Part No. 1SL1203A00 65P18X12
Each
MYR256.75
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 25A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-295
  • Mfr. Part No. 3VA5125-4EC31-0AA0
Each
MYR1,990.24
In Stock
Siemens 50A Rail Mount Fuse Holder for 14 x 51mm Fuse, 3P, 690V ac
  • RS Stock No. 396-005
  • Mfr. Part No. 3NC1493
Each (In a Pack of 2)
MYR1,091.29
Limited stock
Limitor Thermal Fuse +130°C 2.5 A, 250V ac
  • RS Stock No. 204-7477
  • Mfr. Part No. Q82 A 130 05 100
Each
MYR31.21
Temporarily out of stock
ABB S800C MCB, 2P, 32A Curve C, 240V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-941
  • Mfr. Part No. 2CCS882001R0324
Each
MYR523.58
1
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