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

291 / 999+
Temporarily out of stock
Better World
Siemens RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8808
  • Mfr. Part No. 5SV1316-3KK10
Each
MYR1,284.31
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 1A, 250V ac
  • RS Stock No. 895-1672
  • Mfr. Part No. 38211000410
Each (In a Pack of 10)
MYR4.475
In Stock
Schurter Thermal Circuit Breaker - T11 Single Pole 240V ac Voltage Rating, 4A Current Rating
  • RS Stock No. 284-5849
  • Mfr. Part No. 4400.0001
Each
MYR39.10
In Stock
Eaton 45A British Standard Fuse, ET, 690 V, 700 V, 63.5mm
  • RS Stock No. 182-1520
  • Mfr. Part No. 45ET
Each (In a Box of 10)
MYR96.816
Temporarily out of stock
ABB S-ARC1 MCB, 1+N, 16A Curve C, 240V AC, 6 kA Breaking Capacity
  • RS Stock No. 175-9928
  • Mfr. Part No. 2CSA255901R9164 S-ARC1 C16
Each
MYR1,068.90
Last RS stock
RS PRO SMD Non Resettable Fuse 20A, 125V
  • RS Stock No. 182-3997
Each (In a Pack of 5)
MYR6.154
Temporarily out of stock
Better World
Schneider Electric
  • RS Stock No. 219-9032
  • Mfr. Part No. AK5PC33L
Each (In a Pack of 6)
MYR164.365
Temporarily out of stock
Littelfuse SMD Non Resettable Fuse 200mA, 125V
  • RS Stock No. 738-2958
  • Mfr. Part No. 0451.200MRL
Each (In a Pack of 10)
MYR12.494
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 3P, 1A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-183
  • Mfr. Part No. 2CDS273061R0014
Each
MYR2,516.28
In Stock
ABB System Pro M Compact SU200M MCB, 2P, 6A Curve C, 440V AC, 440V DC, 15 kA Breaking Capacity
  • RS Stock No. 231-9738
  • Mfr. Part No. 2CDS272337R0064 SU202M-C6
1 Box of 1
MYR689.38
Temporarily out of stock
Siemens 8GB Enclosure for use with Screw terminal
  • RS Stock No. 211-6093
  • Mfr. Part No. 8GB5024-0KM
Each
MYR490.58
In Stock
Schurter PC Board Non Resettable Fuse, Radial 400mA, 250V ac
  • RS Stock No. 284-5293
  • Mfr. Part No. 0034.6611
Each (In a Pack of 10)
MYR2.31
Temporarily out of stock
Eaton Remote Switching Unit for use with INX16..., INX40…, IZMX16..., IZMX40…
  • RS Stock No. 244-490
  • Mfr. Part No. 184275 +IZMX-STS24DC-1
Each
MYR1,694.72
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 2P, 10A Curve B, 440V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2339
  • Mfr. Part No. M9F21210
Each
MYR456.10
In Stock
Schneider Electric Resi9 R9PF MCB, 3P, 32A, 400V AC, 3000 A Breaking Capacity
  • RS Stock No. 276-8969
  • Mfr. Part No. R9PFC732
Each
MYR554.23
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
ABB PS4 4 Phase Busbar, 400V
  • RS Stock No. 231-9647
  • Mfr. Part No. 2CDL240101R1660 PS4/60/16
1 Box of 1
MYR813.67
In Stock
Eaton 4A F Glass Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 851-1463
  • Mfr. Part No. AGX-4
Each
MYR11.26
In Stock
RS PRO Single Phase Industrial Surge Protector, 50kA, 1.35kV, DIN Rail Mount
  • RS Stock No. 101-794
Each
MYR1,061.89
In Stock
Schurter 10A PCB Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 866-4719
  • Mfr. Part No. 0031.3581
Each (In a Pack of 10)
MYR18.82
1
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