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

115 / 999+
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
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
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
RS PRO MCB, 2P, 20A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0183
Each
MYR114.87
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 100A, Fixed Mount
  • RS Stock No. 232-0236
  • Mfr. Part No. 1SDA067018R1 XT2N 160 TMA 100A FF
Each
MYR1,762.84
ABB F200 RCCB, 100A, 4 Pole, 100mA, Type A, 277 V ac, 480 V ac
  • RS Stock No. 177-5089
  • Mfr. Part No. 2CSF204201R2900 F204 A S-100/0,1
Each
MYR2,291.89
Better World
ABB System Pro M Compact S200 MCB, 4P, 50A Curve K, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-8074
  • Mfr. Part No. 2CDS254001R0577 S204-K50
Each
MYR1,131.43
RS PRO 13A T Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 174-7960
Each (In a Box of 500)
MYR0.883
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 800A, Fixed Mount
  • RS Stock No. 232-0136
  • Mfr. Part No. 1SDA060278R1 T6S800 FF PR221-LS/I 800A
Each
MYR10,101.65
Eaton xEffect MCB, 1+N, 20A Curve B
  • RS Stock No. 230-0894
  • Mfr. Part No. 239048 FAZ6-B20/1N
Each
MYR131.82
Schneider Electric, ComPacT NSX MCCB 4P 250A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 219-9387
  • Mfr. Part No. LV431865
Each
MYR19,534.60
Better World
Schneider Electric RCD, 25A, 2 Pole
  • RS Stock No. 219-9171
  • Mfr. Part No. M9R81225
Each
MYR2,045.02
RS PRO Single Phase Industrial Surge Protector, 25kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-744
Each
MYR634.37
Better World
Siemens Surge Protector, 24 → 48 V ac, 24 → 70V dc, Clip-On Mount
  • RS Stock No. 875-1080
  • Mfr. Part No. 3RT2936-1BB00
Each
MYR83.40
RS PRO 160mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9866
Each (In a Pack of 10)
MYR2.348
Schneider Electric Acti9 iC60 RCCB, 32A, 4 Pole, 300mA, Type C, 380 → 415V ac
  • RS Stock No. 110-281
  • Mfr. Part No. A9D55432
Each
MYR8,907.58
Siemens 16A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1067
  • Mfr. Part No. 5SE2316
Each (In a Pack of 10)
MYR15.178
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 50A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9358
  • Mfr. Part No. 3VA1150-4GE42-0AA0
Each
MYR2,425.89
Littelfuse SMD Non Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 219-6068
  • Mfr. Part No. 0154.250DR
Each (In a Pack of 10)
MYR11.049
Eaton xEffect MCB, 3P, 50A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3406
  • Mfr. Part No. 278878 FAZ-C50/3
Each
MYR717.64
1
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