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

130 / 999+
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 20 Way, 125 A
  • RS Stock No. 339-646
  • Mfr. Part No. SEB48S12125
Each
MYR24,151.80
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 20A Curve D, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3562
  • Mfr. Part No. A9F55320
Each
MYR887.50
In Stock
Schurter 8A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 830-4240
  • Mfr. Part No. 8020.5020.G
Each (In a Pack of 10)
MYR4.604
Temporarily out of stock
Eaton 100A British Standard Fuse, B1, 415V, 111mm
  • RS Stock No. 181-8466
  • Mfr. Part No. CD100M160
Each (In a Box of 10)
MYR162.755
Limited stock
Better World
Schneider Electric Acti 9 4 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2746
  • Mfr. Part No. A9XPH457
Each
MYR1,697.87
In Stock
Eaton xEffect MCB, 3P, 25A Curve D, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3563
  • Mfr. Part No. 278898 FAZ-D25/3
Each
MYR697.07
In Stock
RS PRO MCB, 1P, 20A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0199
Each
MYR50.78
In Stock
Better World
Schneider Electric Multi 9 C60N MCB, 2P, 10A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 214-2065
  • Mfr. Part No. M9F11210
Each
MYR343.10
In Stock
Eaton 1A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9426
  • Mfr. Part No. S501-1-R
1 Bag of 1000
MYR1,039.20
In Stock
Siemens 15A Cartridge Fuse
  • RS Stock No. 210-6991
  • Mfr. Part No. 3NW1150-0HG
Each (In a Pack of 10)
MYR123.053
In Stock
ABB, Protecta MCCB 3P 160A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 831-9175
  • Mfr. Part No. 1SDA067418R1 XT1N 160 TMD 160-1600 3p F F
Each
MYR2,447.27
Temporarily out of stock
ABB System Pro M Compact S200 MCB, 2P, 1A Curve D, 400V AC, 440V DC, 6 kA Breaking Capacity
  • RS Stock No. 186-3448
  • Mfr. Part No. 2CDS252001R0011 S202-D1
Each
MYR317.11
In Stock
SIBA 32A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 247-4217
  • Mfr. Part No. 50-124-06/32A
Each
MYR62.28
Temporarily out of stock
Eaton PC Board Non Resettable Fuse, Radial 6.3A, 250V ac
  • RS Stock No. 169-9505
  • Mfr. Part No. SR-5-6-3A-BK
Each (In a Bag of 200)
MYR3.001
Temporarily out of stock
RS PRO HBC, LBC Fuse Kit
  • RS Stock No. 420-268
1 Kit
MYR405.59
In Stock
Better World
Schneider Electric, PowerLogic, 200A, Energy Sensor, 3VA, Wireless
  • RS Stock No. 256-4051
  • Mfr. Part No. A9MEM1590
Each
MYR5,557.48
Temporarily out of stock
Eaton 16A Bolted Tag Fuse, F2, 550V ac
  • RS Stock No. 181-8532
  • Mfr. Part No. ESD16
1 Box of 20
MYR501.62
Temporarily out of stock
Eaton 100A 0.001 x 0.001in Modular Fuse Fuse Block, 700V
  • RS Stock No. 260-719
  • Mfr. Part No. BH-0112
Each
MYR1,322.03
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 236-7497
  • Mfr. Part No. 1SDA067786R1 XT2L 160 MA 32 FF
Each
MYR2,471.80
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 265-7495
  • Mfr. Part No. 2800976
Each
MYR885.28
1
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