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

245 / 999+
Temporarily out of stock
ABB Consumer Unit GALE'O
  • RS Stock No. 183-3767
  • Mfr. Part No. 1SPE007714F0132
Each
MYR240.65
In Stock
Eaton 21A DIN Rail Mount 6.3 x 32mm Fuse Block, 300V
  • RS Stock No. 233-0618
  • Mfr. Part No. BK-S-8002-1X-DIN
Each (In a Pack of 10)
MYR21.137
Temporarily out of stock
onsemi Thermal Fuse +125°C 3 A, 5V
  • RS Stock No. 195-8752
  • Mfr. Part No. NIS6350MT1TXG
Each (On a Reel of 3000)
MYR4.809
In Stock
Schneider Electric 8A GG Cartridge Fuse, 8.5 x 31.5mm
  • RS Stock No. 590-001
  • Mfr. Part No. DF2BN0800
1 Pack of 10
MYR76.07
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, 10mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6976
  • Mfr. Part No. 2CSR255180R0165
Each
MYR1,407.86
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 260-7472
  • Mfr. Part No. C10V45E040
Each
MYR15,460.35
In Stock
Eaton 30A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 850-7133
  • Mfr. Part No. BK-HKP-E-R
Each
MYR60.71
In Stock
Eaton xEffect MCB, 4P, 16A Curve C, 240 → 415V AC, 96V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7144
  • Mfr. Part No. 279061 FAZ-C16/4
Each
MYR997.17
In Stock
Hager NSN MCB, 3P, 50A Curve D, 415V AC, 15 kA Breaking Capacity
  • RS Stock No. 597-960
  • Mfr. Part No. NSN350
Each
MYR1,778.19
In Stock
Littelfuse SMD Non Resettable Fuse 4A, 125V ac/dc
  • RS Stock No. 541-3669P
  • Mfr. Part No. 0452004.MRL
Each (Supplied on a Reel)
MYR5.079
In Stock
Eaton xEffect MCB, 1P, 4A Curve B
  • RS Stock No. 230-0912
  • Mfr. Part No. 177380 FAZ6-B4/1
Each
MYR128.21
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 10A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3389
  • Mfr. Part No. A9F76210
Each
MYR707.65
Temporarily out of stock
Eaton 6A British Standard Fuse, 240V, 35mm
  • RS Stock No. 181-8539
  • Mfr. Part No. LST6
1 Box of 20
MYR648.38
Temporarily out of stock
ABB Busbar for use with S200C
  • RS Stock No. 250-4788
  • Mfr. Part No. 2CDL803141R1024
1 Box of 15
MYR3,148.18
In Stock
Mersen 25A Offset Tag Fuse, 9.4 x 47mm, 240V
  • RS Stock No. 209-6423
  • Mfr. Part No. K1065691 / BLST24V25
Each (In a Pack of 10)
MYR23.032
Currently unavailable
Bourns SMD Non Resettable Fuse 500mA, 50V dc
  • RS Stock No. 692-4965P
  • Mfr. Part No. SF-0603F050-2
Each (Supplied on a Reel)
MYR3.089
In Stock
Hinode Electric Co Ltd 125A Bolted Tag Fuse, 77mm
  • RS Stock No. 103-4251
  • Mfr. Part No. 660GH-125
Each
MYR182.84
In Stock
SIBA 10A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3330
  • Mfr. Part No. 70-007-65/10A
Each (In a Pack of 10)
MYR1.515
In Stock
Eaton Fuse Puller, Sizes 1 → 1-3/4
  • RS Stock No. 849-5973
  • Mfr. Part No. FP-3
Each
MYR287.58
Temporarily out of stock
Eaton 8A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-180
  • Mfr. Part No. C10G8 CYLINDRICAL FUSE 10 x 38 8A GG 500V AC
1 Pack of 10
MYR47.67
1
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