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

286 / 999+
In Stock
Better World
ABB S200C MCB, 2P, 6A Curve C, 240V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-1603
  • Mfr. Part No. 2CDS251281R0064
Each
MYR259.52
Temporarily out of stock
ABB PBFC 3, 3+N Phase Busbar
  • RS Stock No. 202-501
  • Mfr. Part No. 1STQ007409A0000
Each
MYR6,585.95
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-8059
  • Mfr. Part No. C25W46E160
Each
MYR27,132.68
In Stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 20 kA, Fixed Mount
  • RS Stock No. 232-0085
  • Mfr. Part No. 1SDA054325R1 T5N400 FF PR221-LS 400A
Each
MYR6,674.13
In Stock
Eaton 6A British Standard Fuse, 240V, 35mm
  • RS Stock No. 181-8801
  • Mfr. Part No. STD6
Each
MYR18.05
In Stock
Mersen 500mA FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 188-6726
  • Mfr. Part No. J084303
Each (In a Pack of 10)
MYR22.31
In Stock
Eaton MCB, 1+N, 40A Curve C
  • RS Stock No. 230-1101
  • Mfr. Part No. 264699 PLG6-C40/1N
Each
MYR87.92
In Stock
Littelfuse Non Resettable Fuse 62mA, 125V ac
  • RS Stock No. 738-2841
  • Mfr. Part No. 0451.062MRL
Each (In a Pack of 10)
MYR20.81
In Stock
Better World
Schneider Electric, Acti 9, Clario, Librio, Prodis MCCB, DIN Rail Mount
  • RS Stock No. 248-3690
  • Mfr. Part No. A9N26476
Each
MYR437.75
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-4382
  • Mfr. Part No. 1SDA072563R1
Each
MYR129,725.08
Temporarily out of stock
Schneider Electric Desk Unit System, 421mm, 16A, Unica system+ Series
  • RS Stock No. 119-180
  • Mfr. Part No. INS44260
Each
MYR1,141.62
Temporarily out of stock
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7296
  • Mfr. Part No. 1SDA067471R1 TMA 40-400 XT4 4p
Each
MYR3,167.05
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 63A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9377
  • Mfr. Part No. 3VA1163-3ED22-0AA0
Each
MYR1,427.07
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-722
  • Mfr. Part No. 3VA6210-7JP31-0AA0
Each
MYR16,349.72
In Stock
RS PRO 63A Rail Mount Fuse Holder for F2 Fuse, 415V ac
  • RS Stock No. 216-5351
Each
MYR113.28
Temporarily out of stock
ABB S301 MCB, 1P, 20A Curve C, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-734
  • Mfr. Part No. 2CDS381001R0204
Each
MYR464.16
In Stock
ABB System Pro M Compact S200 MCB, 1P, 32A Curve C, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-7328
  • Mfr. Part No. 2CDS251001R0324 - S201C32
Each
MYR125.16
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 63A, Breaking Capacity 36kA
  • RS Stock No. 260-9742
  • Mfr. Part No. LV510345
Each
MYR2,891.72
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 100A 3VA2, 3 channels
  • RS Stock No. 157-076
  • Mfr. Part No. 3VA2110-5JQ36-0AA0
Each
MYR9,835.66
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 800A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5258
  • Mfr. Part No. 3VA2580-5HN42-0AA0
Each
MYR19,639.58
1
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