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

254 / 999+
Temporarily out of stock
Eaton xEffect MCB, 2P, 20A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3311
  • Mfr. Part No. 102211 FAZ-C20/2-RT
Each
MYR266.52
In Stock
Eaton 20A T Cartridge Fuse, 10 x 38mm
  • RS Stock No. 849-5692
  • Mfr. Part No. SC-20
Each
MYR100.73
In Stock
Eaton Fuse Holder Microswitch
  • RS Stock No. 182-1420
  • Mfr. Part No. MAI
Each
MYR175.41
In Stock
Eaton 1A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 228-660
  • Mfr. Part No. C10G1 CYLINDRICAL FUSE 10 x 38 1A GG 500V AC
1 Pack of 10
MYR55.83
In Stock
ETA Thermal Circuit Breaker - 1110 Single Pole 250V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 417-010
  • Mfr. Part No. 1110-F112-P1M1-10A
Each
MYR119.79
Temporarily out of stock
ABB RCBO, 16A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C
  • RS Stock No. 183-3706
  • Mfr. Part No. 2CSR245041R3164
Each
MYR974.28
In Stock
Siemens SENTRON 2 Phase Busbar
  • RS Stock No. 187-5200
  • Mfr. Part No. 5ST3736
Each
MYR78.48
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-500
  • Mfr. Part No. 3VA5110-6ED31-1AA0
Each
MYR3,098.36
In Stock
Schurter 1A M Glass Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 865-7370
  • Mfr. Part No. 0034.2516
Each (In a Pack of 10)
MYR5.087
In Stock
Carling Technologies Thermal Circuit Breaker - C Single Pole 240V Voltage Rating Panel Mount, 30A Current Rating
  • RS Stock No. 881-0830
  • Mfr. Part No. CA1-B0-34-630-121-C
Each
MYR121.07
Temporarily out of stock
Eaton 71A British Standard Fuse, FE, 690 V ac, 500V dc, 63.5mm
  • RS Stock No. 156-8989
  • Mfr. Part No. 71FE
Each
MYR120.13
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 25 kA
  • RS Stock No. 210-1642
  • Mfr. Part No. 3VA1125-3EE32-0AA0
Each
MYR1,739.51
Temporarily out of stock
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-734
  • Mfr. Part No. A9DC4632
Each
MYR2,022.68
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 800A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-051
  • Mfr. Part No. 3VA6580-6KQ46-0AA0
Each
MYR50,352.79
In Stock
ABB, Tmax XT MCCB 3P 52A, Fixed Mount
  • RS Stock No. 237-6225
  • Mfr. Part No. 1SDA067051R1 XT2N 160 MA 52 FF
Each
MYR1,703.25
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 25A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9729
  • Mfr. Part No. LV510331
Each
MYR1,727.88
Temporarily out of stock
SIBA 500mA T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 418-9501
  • Mfr. Part No. 70-059-61/0.5A
Each (In a Pack of 10)
MYR1.826
Temporarily out of stock
Legrand DX3 Circuit Breaker, 230V AC
  • RS Stock No. 266-1303
  • Mfr. Part No. 406295
Each
MYR4,132.86
Temporarily out of stock
Siemens SENTRON 4 Phase Busbar
  • RS Stock No. 266-602
  • Mfr. Part No. 8US1313-4AH03
Each
MYR1,092.40
Temporarily out of stock
ABB RCBO, 32A Current Rating, 2P Poles, 100mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6912
  • Mfr. Part No. 2CSR275080R2324
Each
MYR729.47
1
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