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

292 / 999+
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 125A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9763
  • Mfr. Part No. LV516462
Each
MYR3,667.27
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-541
  • Mfr. Part No. 3VA6140-8KT41-0AA0
Each
MYR13,959.73
Temporarily out of stock
Siemens 50A Cartridge Fuse, 22 x 127mm
  • RS Stock No. 627-062
  • Mfr. Part No. 3NC2350-0MK
1 Pack of 5
MYR1,206.99
Temporarily out of stock
Socomec 25A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 252-5321
  • Mfr. Part No. 60520025
Each (In a Pack of 10)
MYR28.591
In Stock
Mersen 16A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 188-7303
  • Mfr. Part No. A211554
Each (In a Pack of 10)
MYR14.367
Temporarily out of stock
ABB F200 RCCB, 100A, 2 Pole, 100mA, Type AC, 230V ac
  • RS Stock No. 225-6092
  • Mfr. Part No. 2CSF202001R2900 F202 AC-100/0.1
Each
MYR1,122.87
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 300A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 229-411
  • Mfr. Part No. 107588 NZMH2-4-A300
Each
MYR13,921.70
In Stock
Schneider Electric Straight Busbar Trunking, 3m, 160A, Canalis Series
  • RS Stock No. 130-450
  • Mfr. Part No. KSA160ED43012
Each
MYR3,979.25
In Stock
Eaton 6A gG/gL Cartridge Fuse, 14 x 51mm
  • RS Stock No. 229-111
  • Mfr. Part No. C14G6
1 Pack of 10
MYR110.11
In Stock
Eaton 600mA T Fibreglass Cartridge Fuse, 10 x 38mm
  • RS Stock No. 849-5958
  • Mfr. Part No. FNQ-6-10
Each (In a Pack of 10)
MYR235.303
Temporarily out of stock
Siemens SENTRON Retrofit Kit
  • RS Stock No. 277-0939
  • Mfr. Part No. 3WA9111-0EK62
1 Set
MYR1,950.79
Temporarily out of stock
Phoenix Contact Surge Protector, DIN Rail Mount
  • RS Stock No. 131-627
  • Mfr. Part No. 2906778
Each
MYR559.34
In Stock
Eaton 12A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-3933
  • Mfr. Part No. KTK-R-12
Each
MYR194.71
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-6557
  • Mfr. Part No. 1SDA068031R1 DCL EKIP M-LIU IN=160A XT4
Each
MYR5,614.15
In Stock
Littelfuse 20A Inline Fuse Holder for 6.3 x 32mm Fuse, 32V dc
  • RS Stock No. 360-7294
  • Mfr. Part No. 01550100Z
Each (In a Pack of 5)
MYR12.71
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Touch LI, 4 channels
  • RS Stock No. 259-3461
  • Mfr. Part No. 1SDA071414R1
Each
MYR29,558.75
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 874-4240
  • Mfr. Part No. 3VA1125-3ED36-0AA0
Each
MYR1,972.14
Temporarily out of stock
Hager BFF Series RCCB, 40A, 2 Pole, 300mA, Type F
  • RS Stock No. 597-979
  • Mfr. Part No. BFF240
Each
MYR2,140.62
In Stock
Legrand DX3 RCCB, 25A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 732-0051
  • Mfr. Part No. 4 116 10
Each
MYR725.98
In Stock
Eaton 5A Tan Automotive Car Fuse, 32V dc
  • RS Stock No. 848-2554
  • Mfr. Part No. ATC-5
Each
MYR5.78
1
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