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

46580 Products showing for Fuses & Circuit Breakers

70 / 999+
Better World
ABB Compact Home SH200 MCB, 1P, 32A Curve C, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8251
  • Mfr. Part No. 2CDS211001R0324 SH201-C32
Each
MYR83.66
Littelfuse PC Board Non Resettable Fuse, Radial 500mA, 250V ac
  • RS Stock No. 895-1669
  • Mfr. Part No. 37205000431
Each (In a Pack of 10)
MYR4.956
Schurter OG Tin Plated Bronze PCB Mount Fuse Clip for 5 x 20mm Fuse Clip Fuse
  • RS Stock No. 269-3795
  • Mfr. Part No. 0751.0099
Each
MYR1.77
ABB RCBO, 40A Current Rating, 4P Poles, Type C
  • RS Stock No. 237-5215
  • Mfr. Part No. 2CSR274101R1404
Each
MYR2,397.26
WJ Furse Copper Earth Bar L. 125mm x W. 90mm x H. 90mm 2 Ways
  • RS Stock No. 124-2495
  • Mfr. Part No. 7TCA083670R0600 LK205
Each
MYR413.04
Siemens SIRIUS 3 Phase Busbar, 690V, 63mm Pitch
  • RS Stock No. 246-5178
  • Mfr. Part No. 3RV1915-3AB
Each
MYR88.67
Better World
Schneider Electric, ComPacT New Generation Circuit breaker 3P 80A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 254-6280
  • Mfr. Part No. C10B3TM080
Each
MYR3,136.96
Better World
Schneider Electric Vigi iDT40 RCD, 25A, 1+N Pole, 30mA, 230V ac
  • RS Stock No. 191-6145
  • Mfr. Part No. A9Y62625
Each
MYR1,608.81
ABB, T7H MCCB 4P 1kA, Fixed Mount
  • RS Stock No. 237-6020
  • Mfr. Part No. 1SDA062779R1 T7H 1000A PR232-LSI FF
Each
MYR26,564.73
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 236-7352
  • Mfr. Part No. 1SDA067536R1 Ekip LSIG In=160A XT4 4p
Each
MYR8,538.57
Legrand DX Range DNX3 MCB, 1P, 20A Curve C, 250V AC, 12V DC, 4.5 kA Breaking Capacity
  • RS Stock No. 823-4677
  • Mfr. Part No. 4 067 84
Each
MYR154.59
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 40A Curve D, 277V AC
  • RS Stock No. 256-6772
  • Mfr. Part No. M9F23240
Each
MYR455.08
Eaton xPole MCB, 1+N, 2A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 230-1077
  • Mfr. Part No. 264741 PLG4-C2/1N
Each
MYR80.71
Better World
Schneider Electric Auto Recloser Circuit Trip for use with Circuit Breaker
  • RS Stock No. 790-7359
  • Mfr. Part No. A9C70134
Each
MYR1,960.58
Better World
Schneider Electric 690 V ac, 750V dc Circuit Trip for use with Compact NSX 100/160 Circuit Breakers
  • RS Stock No. 212-0231
  • Mfr. Part No. LV429055
Each
MYR712.36
ABB F200 RCCB, 63A, 4 Pole, 300mA, Type A, 230/400V ac
  • RS Stock No. 177-5091
  • Mfr. Part No. 2CSF204201R3630 F204 A S-63/0,3
Each
MYR1,686.34
SIBA 160A White Automotive Car Fuse, 80V dc
  • RS Stock No. 161-1823
  • Mfr. Part No. 9005805.160
Each (In a Box of 20)
MYR25.095
Eaton 32A Bolted Tag Fuse, F2, 415V ac
  • RS Stock No. 181-8499
  • Mfr. Part No. NSD32M40
1 Box of 20
MYR1,315.59
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 20A
  • RS Stock No. 221-0898
  • Mfr. Part No. BGL36020LU
Each
MYR5,940.05
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 63A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3405
  • Mfr. Part No. A9F54363
Each
MYR857.05
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