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

114 / 999+
Temporarily out of stock
Legrand Vistop MCB, 4P, 160A, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 620-2965
  • Mfr. Part No. 0 225 53
Each
MYR2,008.40
Temporarily out of stock
Eaton RCCB, 25A, 2 Pole, 30mA, Type G, 230V ac
  • RS Stock No. 227-0692
  • Mfr. Part No. 264992 PFGM-25/2/003-G
Each
MYR2,010.74
In Stock
ABB Tmax XT Rotary Handle for use with SACE Tmax XT
  • RS Stock No. 236-6856
  • Mfr. Part No. 1SDA069057R1 RHE_B XT2-XT4 F/P BASE RH
Each
MYR367.70
In Stock
Eaton 63A Centred Tag Fuse, NH000, 500V ac
  • RS Stock No. 703-8649
  • Mfr. Part No. 63NHG000B
Each
MYR41.39
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 1A Curve K, 440V AC, 20 kA Breaking Capacity
  • RS Stock No. 514-0175
  • Mfr. Part No. 2CDS253001R0217 S203-K1
Each
MYR660.79
In Stock
Eaton xPole PXL, S200 MCB, 2P, 10A Curve C, 400V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 490-084
  • Mfr. Part No. 236285 PXL-C10/2
Each
MYR317.49
Temporarily out of stock
Better World
Schneider Electric, ComPact MCCB
  • RS Stock No. 221-0950
  • Mfr. Part No. LV429413
Each
MYR1,089.84
Temporarily out of stock
ABB RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 914-4058
  • Mfr. Part No. 2CSR255051R1165 DSE201 B16 AC30 - N Blue
Each
MYR235.60
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 20A Curve B, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3225
  • Mfr. Part No. A9F53320
Each
MYR865.83
Temporarily out of stock
Schneider Electric 12 Way Metal Consumer Unit, 100A, IP2X, IP3X EZ9E
  • RS Stock No. 654-186
  • Mfr. Part No. EZ9E12MCCU
Each
MYR379.62
Temporarily out of stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 3P, 30A Curve C, 277V AC
  • RS Stock No. 256-6810
  • Mfr. Part No. M9F52330
Each
MYR2,086.37
In Stock
ABB SMISSLINE TP S400M MCB, 3P, 32A Curve C, 12V AC, 12V DC, 15 kA Breaking Capacity
  • RS Stock No. 231-9562
  • Mfr. Part No. 2CCS573001R0324 S403M-C32
Each
MYR826.23
In Stock
Better World
Siemens SENTRON 5SL4 MCB, 1P, 6A Curve B, 10 kA Breaking Capacity
  • RS Stock No. 202-7245
  • Mfr. Part No. 5SL4106-6
Each
MYR125.07
In Stock
Siemens 16A Diazed Fuse, gG, 500/440V ac/dc
  • RS Stock No. 167-680
  • Mfr. Part No. 5SB2611
1 Pack of 25
MYR108.37
Temporarily out of stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 13A Curve D, 240V AC
  • RS Stock No. 256-6770
  • Mfr. Part No. M9F23213
Each
MYR597.62
In Stock
Eaton 6A F Glass Cartridge Fuse, 6.3 x 20mm
  • RS Stock No. 849-5835
  • Mfr. Part No. AGW-6
Each (In a Pack of 5)
MYR13.822
Temporarily out of stock
Eaton xEffect - FRCmM-125 Type A RCCB, 125A, 2 Pole, 30mA, Type A, 240V ac
  • RS Stock No. 123-381
  • Mfr. Part No. 171164 FRCMM-125/2/003-A
Each
MYR3,856.42
Temporarily out of stock
Better World
Schneider Electric Acti 9 A9N1 MCB, 4P, 63A Curve B
  • RS Stock No. 219-8286
  • Mfr. Part No. A9N18434
Each
MYR2,950.17
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 2A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3373
  • Mfr. Part No. A9F73202
Each
MYR930.61
In Stock
RS PRO MCB, 2P, 20A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0183
Each
MYR114.87
1
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