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

46579 Products showing for Fuses & Circuit Breakers

83 / 999+
In Stock
RS PRO Single Phase Industrial Surge Protector, 50kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-802
Each
MYR461.40
In Stock
Better World
Schneider Electric iID RCCB, 40A, 4 Pole, 30mA
  • RS Stock No. 776-3708
  • Mfr. Part No. A9R31440
Each
MYR1,849.53
Temporarily out of stock
Eaton 35 → 60A Ferrule Fuse Block, 600V
  • RS Stock No. 182-1697
  • Mfr. Part No. JM60060-3CR
Each
MYR1,062.67
Limited stock
SIBA 1A M Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3565
  • Mfr. Part No. 70-010-05/1A
Each (In a Pack of 5)
MYR48.52
In Stock
Eaton 10A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 233-0581
  • Mfr. Part No. BK1-HTJ-605I
Each (In a Pack of 10)
MYR19.751
In Stock
RS PRO Thermal Circuit Breaker - Single Pole 250V ac Voltage Rating Plug In, 2A Current Rating
  • RS Stock No. 262-4262
1 Box of 2
MYR276.84
Temporarily out of stock
ABB RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 136-7779
  • Mfr. Part No. 2CSR275151R1205 DSE201 M B20 A30 - N Blue
Each
MYR698.00
Temporarily out of stock
Schneider Electric A9R RCCB, 63A, 4 Pole, 415V
  • RS Stock No. 207-401
  • Mfr. Part No. A9R22463
Each
MYR6,273.22
In Stock
RS PRO Single Phase Industrial Surge Protector, 10kA, 1.1kV, DIN Rail Mount
  • RS Stock No. 101-748
Each
MYR152.43
In Stock
Littelfuse 50mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4246
  • Mfr. Part No. 0217.050MXP
Each (In a Pack of 10)
MYR5.329
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 15A Curve C, 250V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3174
  • Mfr. Part No. A9N61510
Each
MYR184.53
In Stock
Mersen 100A NH Fuse, NH00, 690V
  • RS Stock No. 768-3649
  • Mfr. Part No. G227867
Each
MYR100.74
In Stock
Eaton 100A Rail Mount Fuse Holder for 22 x 58mm Fuse, 3P, 690V ac
  • RS Stock No. 703-8572
  • Mfr. Part No. CH223B
Each
MYR578.71
Temporarily out of stock
Schneider Electric Mureva Distribution Board, 32 Way, 125 A
  • RS Stock No. 119-358
  • Mfr. Part No. 13972M
Each
MYR2,506.19
In Stock
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 80A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3064
  • Mfr. Part No. A9N18365
Each
MYR532.93
In Stock
ABB System Pro M Compact SU200M MCB, 1P, 10A Curve K, 277V AC, 277V DC, 15 kA Breaking Capacity
  • RS Stock No. 231-9718
  • Mfr. Part No. 2CDS271337R0427 SU201M-K10
1 Box of 1
MYR278.43
In Stock
Eaton 2A gG/gL Cartridge Fuse, 14 x 51mm
  • RS Stock No. 228-667
  • Mfr. Part No. C14G2
1 Pack of 10
MYR110.11
Temporarily out of stock
Better World
Schneider Electric Acti 9 3 Phase Distribution Board, 24 Way
  • RS Stock No. 125-1415
  • Mfr. Part No. SEA9BN24PEV
Each
MYR4,924.92
In Stock
Eaton 5A T Glass Cartridge Fuse, 6.35 x 31.75mm
  • RS Stock No. 852-7156
  • Mfr. Part No. MDL-5-R
Each
MYR8.87
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 6A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7706
  • Mfr. Part No. 2CDS252001R0064 S202-C6
Each
MYR287.33
1
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