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

46604 Products showing for Fuses & Circuit Breakers

1 / 999+
ABB Emax2 Electronic Circuit Breaker 2kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-4732
  • Mfr. Part No. 1SDA073009R1
Each
MYR71,832.02
Mersen Surge Protector
  • RS Stock No. 179-3063
  • Mfr. Part No. 83020152 / STPT2-40K275V-4P
Each
MYR938.40
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
Eaton 3.15A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 169-9399
  • Mfr. Part No. S500-3.15-R
1 Bag of 1000
MYR914.40
Hager RCCB, 40A, 2 Pole, 30mA
  • RS Stock No. 144-4887
  • Mfr. Part No. CDC140F
Each
MYR1,224.05
Eaton xEffect - FRCmM RCCB, 63A, 2 Pole, 30mA, Type A, 240V ac
  • RS Stock No. 123-599
  • Mfr. Part No. 170433 FRCMM-63/2/003-A
Each
MYR1,521.56
Better World
Siemens 5SV3 RCCB, 25A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 202-7169
  • Mfr. Part No. 5SV3312-6KL
Each
MYR305.43
Eaton xEffect - FRCmM RCCB, 16A, 4 Pole, 100mA, Type A, 240/415V ac
  • RS Stock No. 123-240
  • Mfr. Part No. 170337 FRCMM-16/4/01-A
Each
MYR1,134.26
Eaton, NZM MCCB 3P 160A, Breaking Capacity 80 kA, Fixed Mount
  • RS Stock No. 628-8076
  • Mfr. Part No. 266005 PN2-160
1 Box of 1
MYR2,362.86
Wickmann 5A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 174-0256
  • Mfr. Part No. 0312005.MXP
1 Box of 1000
MYR1,346.40
Hager RCBO, 16A Current Rating, 1P + N Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 597-993
  • Mfr. Part No. ADH823F
Each
MYR1,523.90
ETA Thermal Circuit Breaker - 2 5700 Single Pole 250V Voltage Rating Panel Mount, 15A Current Rating
  • RS Stock No. 729-2760
  • Mfr. Part No. 2-5700-IG2-P10-DD-000040-15A
Each
MYR159.88
Eaton xEffect RCCB, 63A, 2 Pole, 100mA, Type F, 240V ac
  • RS Stock No. 248-937
  • Mfr. Part No. 187392 FRCMM-63/2/01-S/F
Each
MYR2,335.67
ABB FH200 RCCB, 25A, 4 Pole, 30mA, Type AC
  • RS Stock No. 540-1644
  • Mfr. Part No. 2CSF204006R1250 FH204 AC-25/0,03
Each
MYR401.35
Schneider Electric Tesys Circuit Breaker - TeSyS GB2 Single Pole 250V ac Voltage Rating Clip-On, 500mA Current Rating
  • RS Stock No. 589-844
  • Mfr. Part No. GB2CS05
1 Pack of 6
MYR1,582.23
ETA Thermal Circuit Breaker - 2 5700 Single Pole 250V Voltage Rating Panel Mount, 16A Current Rating
  • RS Stock No. 729-2764
  • Mfr. Part No. 2-5700-IG2-P10-DD-000040-16A
Each
MYR171.07
ABB, Tmax XT MCCB 4P 80A, Fixed Mount
  • RS Stock No. 236-7279
  • Mfr. Part No. 1SDA067405R1 XT1C 160 TMD 80A FF
Each
MYR2,418.28
Eaton 160A British Standard Fuse, A4, 415V ac, 94mm
  • RS Stock No. 139-962
  • Mfr. Part No. DEO160
Each
MYR168.49
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 232-0263
  • Mfr. Part No. 1SDA067560R1 XT2S 160 TMA 160A FF
Each
MYR2,438.18
Limitor Thermal Fuse +55°C 2.5 A, 250V ac
  • RS Stock No. 176-9104
  • Mfr. Part No. P82 55 05100
Each
MYR25.37
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