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
Fuses - PCB
Fuses - PCB

46580 Products showing for Fuses & Circuit Breakers

2323 / 999+
Eaton RCCB, 80A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 227-0757
  • Mfr. Part No. 114102 PFGM-80/2/003/-
Each
MYR1,713.54
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9622
  • Mfr. Part No. 3VA10804ED420AA0
Each
MYR2,189.40
Mersen 1A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2695
  • Mfr. Part No. B212061
1 Box of 10
MYR100.72
Eaton NZM Jumper Link for use with N3-4-…-S1(-S15)-DC
  • RS Stock No. 120-239
  • Mfr. Part No. 168590 NZM3-4-XKV2POU-K
Each
MYR3,712.34
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-4214
  • Mfr. Part No. 1SDA072334R1
Each
MYR30,665.82
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 4 channels
  • RS Stock No. 259-3883
  • Mfr. Part No. 1SDA071904R1
Each
MYR221,443.23
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3585
  • Mfr. Part No. 1SDA071562R1
Each
MYR40,515.87
Eaton IZMX/INX Electronic Circuit Breaker 2.5kA , 3 channels
  • RS Stock No. 132-842
  • Mfr. Part No. 183600 IZMX40N3-P25W-1
Each
MYR116,659.07
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 450A, Breaking Capacity 9 kA, Withdrawable
  • RS Stock No. 230-049
  • Mfr. Part No. 110857 NZMH3-ME450-AVE
Each
MYR19,038.46
Eaton 400A Tag Fuse, 3L, 1.5kV, 205mm
  • RS Stock No. 282-6483
  • Mfr. Part No. BSF-400G-3XL15
Each
MYR2,506.99
ABB Fuse Bases Fuse Base for use with Switch Disconnector
  • RS Stock No. 259-9856
  • Mfr. Part No. 1SCA151169R1001
Each
MYR793.24
Schneider Electric, Compact MCCB 4P 1.6kA, Fixed Mount
  • RS Stock No. 247-1840
  • Mfr. Part No. 33570
Each
MYR41,238.02
ABB, Tmax MCCB 3P 1.6kA, Fixed Mount
  • RS Stock No. 237-6003
  • Mfr. Part No. 1SDA062044R1 X1-T7 W FP HR-HR
Each
MYR10,434.68
ifm electronic Electronic Circuit Breaker 4A 24V DF, 2 channels
  • RS Stock No. 100-572
  • Mfr. Part No. DF1214
Each
MYR369.67
Allen Bradley, 140G MCCB 3P 125A, Module Frame Mount
  • RS Stock No. 261-2836
  • Mfr. Part No. 140G-G3C3-C15
Each
MYR1,795.00
ABB F200 RCCB, 40A, 4 Pole, 300mA, Type AC
  • RS Stock No. 537-7456
  • Mfr. Part No. 2CSF204001R3400 F204 AC-40/0,3
Each
MYR706.30
Better World
Siemens SENTRON MCB, 1+N, 25A Curve C, 230V AC
  • RS Stock No. 238-3196
  • Mfr. Part No. 5SL6025-7MC
Each
MYR922.16
Littelfuse 10A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3120
  • Mfr. Part No. 0217010.MXP
Each (In a Pack of 10)
MYR1.389
ETA Thermal Circuit Breaker - 3600 Single Pole 250V Voltage Rating Panel Mount, 1A Current Rating
  • RS Stock No. 729-2833
  • Mfr. Part No. 3600-P10-Si-1A
Each
MYR399.81
Better World
Siemens SENTRON 3VA1 MCB, 1P, 32A
  • RS Stock No. 224-7838
  • Mfr. Part No. 3VA1132-3ED16-0AA0
Each
MYR822.96
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